CRSC · California Referenced Standards Code

What endurance and operational tests (cycle counts, operation rates) are required?

Manufacturers must include a test report (per § 12-72-201) comparing their device to the standards in § 12-72-202; endurance cycles/rates are set in Table 12-72-1D and device clauses (e.g., 6,000 cycles at 6–10 cpm or 40,000 cycles at 60 cpm) and must be run with representative loads and documented results.

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Last reviewed: July 6, 2026

What the code requires — 2-4 sentences

Manufacturers must submit a test report showing the tests performed and an analysis comparing the design to the applicable requirements in § 12-72-201 and § 12-72-202. The CRSC requires specified endurance (cycle) counts and operation rates for signaling devices and control-unit operating devices (see the endurance Table and the endurance clause that directs testing to that Table). See § 12-72-201 and § 12-72-103(n) for the reporting and endurance-test linkage, and § 12-72-202 for device construction and supervisory requirements.

The single most important rule: the test report must document the exact endurance/operation tests performed and compare the product against the requirements in § 12-72-201 and § 12-72-202; endurance cycle counts and rates are taken from the CRSC endurance table and applicable device clauses.

Requirements in detail

Scope — what devices and reports

  • Test reports: Must include engineering data, operating manuals, photos and an analysis comparing the design against § 12-72-201(b) through § 12-72-202(g) (this is the baseline report requirement). § 12-72-201 (Test reports).
  • Construction/performance: Devices must be constructed and calibrated so they are durable, not readily adjustable in the field, and include required supervisory features (e.g., power supervisory) per § 12-72-202.

Endurance / operational tests (cycles & rates)

The CRSC directs endurance testing to the endurance table and to specific device clauses. Key, decision-relevant dimensions are summarized below (values from the CRSC Table 12-72-1D and device endurance clauses).

Item / test situation Required total cycles Operation rate (cycles per minute) Code Reference
Continuous noncode signal (each operation of alarm initiating device) 6,000 cycles 6 cpm Table 12‑72‑1D; see § 12-72-103(n) and Table 12‑72‑1D (endurance)
Coded or noncode impulses (a number of impulses per operation) 40,000 cycles 60 cpm Table 12‑72‑1D (endurance)
Preliminary coded impulses followed by continuous signal (reset after each group of 40 impulses) 40,000 cycles (with resets) 60 cpm (impulse rate) Table 12‑72‑1D
Relays used in protective signaling service 40,000 cycles 60 cpm Table 12‑72‑1D; also relay-specific endurance clause § 12-72-105 (relays)
Detectors (alarm signal cycles / detector endurance) 6,000 cycles Not more than 10 cpm Detector endurance clause (detectors) — see § 12-72-303 (n) / device endurance text
Overload / make-and-break test for current-interrupting devices Not less than 50 make/break operations (at 115% rated voltage in some tests) — Overload clause (control units/devices) — § 12-72-103(m) and related device clauses

Notes on interpretation:

  • The endurance table (Table 12‑72‑1D) is the source for the cycle totals and rates for signaling performance; the performance section instructs that an operating device included in a control unit shall be tested to the cycles/rates in that table § 12-72-103(n).
  • Detector-specific endurance and overload tests are stated in the detector clauses (e.g., 6,000 cycles at up to 10 cpm) — those clause(s) must be followed when the device is a detector.

Test conditions and acceptance

  • Tests are to be performed on representative samples and the test report must list the tests performed and results (see § 12-72-201).
  • Acceptance criterion for endurance/overload: no electrical or mechanical failure and no undue pitting, burning or welding of contacts (see relay and device clauses).

Exceptions & special cases

  • If a product has an “unusual construction,” additional or modified tests may be required; the State Fire Marshal may require further evaluation (see § 12-72-201(c)).
  • Certain device classes have their own endurance language (for example, detectors vs. relays vs. control-unit actuators); always follow the clause that applies to the device being submitted (detector clause vs. control-unit clause vs. relay clause). See detector clause and Table 12‑72‑1D.
  • Power-supervisory behavior: a fire alarm device must be able to produce alarm signal for not less than 4 minutes at the point where loss of operating power is first indicated; this is a construction/performance requirement (see § 12-72-202(g)).

Common mistakes

  • Relying on a single section instead of the combination: the report must compare the design against § 12-72-201(b) through § 12-72-202(g), but the actual cycle counts come from the endurance Table and device-specific clauses. Testers sometimes omit the cross-reference in the report — don’t.
  • Testing without representative loads: endurance tests that switch or control loads must make and break the normal current the device will control (per the endurance clause). Failure to connect rated test loads (or using incorrect power factors for inductive loads) invalidates results.
  • Leaving calibration or adjustments accessible: calibration means must be guarded or sealed to prevent field manipulation (see § 12-72-202(c)).
  • Omitting mandatory supervisory checks (e.g., power supervisory) — the device must indicate loss of operating power and meet the minimum alarm duration at that point. § 12-72-202(g).

Worked example — concrete scenario with numbers

Scenario: You are testing a control-unit relay that will provide a coded series of impulses (manufacturer’s function = coded impulses per alarm).

  1. Applicable requirement: Table 12‑72‑1D lists coded impulses endurance as 40,000 cycles at 60 cycles per minute (see Table 12‑72‑1D; the endurance instruction is in § 12-72-103(n)).
  2. Test plan: Run the relay through 40,000 make/break operations at 60 cpm.
    • Time required = 40,000 cycles ÷ 60 cycles/min = 666.67 minutes ≈ 11.11 hours of continuous operation.
  3. Acceptance: At the end of the run there shall be no electrical or mechanical failure, nor undue pitting, burning or welding of contacts (relay acceptance criteria). If a test load is inductive, use the power-factor guidance in the device clauses when selecting an equivalent test load.

If instead the device being tested is a detector that is required to operate for 6,000 alarm cycles at up to 10 cpm, the test time is 6,000 ÷ 10 = 600 minutes = 10 hours; follow detector-specific load, voltage and reset conditions in the detector clause.

Related provisions

  • § 12-72-201 — Test reports; content and requirement to compare design vs. the listed clauses.
  • § 12-72-202 — Construction, mounting, calibration, mechanical assembly and power supervisory requirement (see (g)).
  • § 12-72-103(n) — Performance / Endurance direction referencing Table 12‑72‑1D for device test cycles/rates.
  • Table 12-72-1D — The CRSC endurance table with the 6,000 / 40,000 cycle figures and operation rates.
  • § 12-72-303 (detector clauses) — Detector-specific overload and endurance requirements (e.g., 6,000 cycles at up to 10 cpm).
  • § 12-72-105 — Relay-specific tests (overload and endurance language for relays).

If you want, I can:

  • Extract the exact snippets of each cited clause and assemble a test-plan checklist (per device type), or
  • Produce a timed test-run schedule and data-collection template for a specific product (relay, detector, or control unit) referencing the precise tests above.

Code references

Grounded in the retrieved California Referenced Standards Code — click a citation to read the verbatim passage:

  • CRSC § 12-72 High relevance — show source text

    but are to be samples that have been subjected to the complete production soldering process. The test potential is to be obtained from a suitable transformer, the output voltage of which can be regulated. The potential is to be increased gradually from zero, at the rate, of approximate 75 volts per second, until dielectric breakdown occurs. Three different locations on each sample, with different spacings between conductors, if possible, are to be tested. The locations selected are to be the same for all samples. The average dielectric breakdown potentials for each group of six samples for each location is to be determined. The average value for each location for the samples that have been conditioned is to be not less than 80 percent of the average value for the corresponding location for the samples that have not been conditioned.

    RELAYS FOR PROTECTIVE SIGNALING SERVICE

    Sec. 12-72-105.

    (a) Test conditions. Relays which have not been qualified as approved for use with protective signaling systems by investigation and report from an approved listing agency shall have its suitability for use in a protective signaling system evidenced by an investigation and report by an approved testing laboratory which shall include certification that the relay conforms to the minimum requirements of the California Electrical Code. The test report shall include, but is not limited to:

    1. Over- and under-voltage operation per the California Electrical Code.

    2. The insulation of coil windings of relays shall be such as to resist the absorption of moisture.

    3. Temperature readings on the coil and insulation under normal operation at a constant temperature (temperature may be considered constant when three succeeding readings at not less than 5 minute intervals indicate no change in temperature).

    4. Overload test consisting of 50 operations at 115 percent of rated voltage with a test load being that which the relay is to handle.

    5. Endurance test consisting of 40,000 cycles of coded or noncoded signal impulses at rated load and voltage.

    6. Dielectric strength test without breakdown by application of 60 cycle a.c. at twice rated voltage plus 1,000 volts for a period not less than 1 minute.

    (b) Acceptance criteria. There shall be no electrical or mechanical failure, nor any undue pitting, burning or welding of contact during any test.

    SEMICONDUCTOR TESTS

    Sec. 12-72-106.

    (a) General. Semiconductors shall be investigated to determine their suitability for application under all the environmental conditions to which they will be exposed in service.

    The performance tests of the complete device are intended to show the effects of these conditions. The prescribed tests may be supplemented where conditions exceeding those represented by the tests indicated herein may be encountered.

    (b) Test procedure.

    1. Temperature. The system combination is to be connected as in the normal operation test and operated in an oven at 85°C. It is then to be operated in a refrigerator at 0°C. After temperature equilibrium has been maintained in both cases, the unit shall operate as in the normal operation test.
    2. Humidity. The system combination is to be connected as in the normal operation test, and placed in a humidity cabinet maintained at 85 percent humidity, 32°C, for a period of 48 hours. At the end of this time, the unit shall operate as in the normal operation test.
    3. Transient voltage. The system combination shall be subjected to the transient voltages caused by the collapse of the field of a 2-kilovolt-ampere transformer switched on and off on a random basis for 500 cycles.
    4. **Acceptance criteria.
  • CRSC § 12-10 High relevance — show source text

    (h) Test report. The test report shall contain engineering data and drawings; size and weight of door tested; wiring diagrams of electrical control systems; schematic drawings of mechanical controls; and operating manuals. The report shall describe the mechanical operation of the power operator in sequence as the door(s) open and close under normal and emergency conditions. The report shall set forth the tests performed in accordance with the provisions of this standard and the results thereof. The report shall additionally contain an analysis comparing each feature of the design against the performance test procedures contained herein.

    (i) Simulated installation and test equipment. Doors with power operators shall be installed in a simulated wall and door framing assembly in accordance with the manufacturer’s instructions. The test specimen shall be not less than 3 feet (914 mm) wide by 7 feet (2133 mm) high. A motor-driven or suitable mechanism shall be used to actuate the activating carpet. The rate of operation or number of cycles shall be 3 to 5 per minutes. On sliding doors with a swing-out section additional operating endurance tests shall be conducted. A motor-driven mechanism or other approved means shall be used to push the swinging door section open and pull the swinging section closed at a rate of 3 to 5 cycles per minute, so that the latching mechanism and disconnect switches operate as in

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    service. During the test the door specimen shall have only the lubrication which is provided by the manufacturer at the factory, or as may be recommended by the manufacturer in his installation instructions.

    (j) Endurance tests. The power operator shall function as intended to open and close the door(s) for 100,000 cycles of operation without failure or excessive wear of parts. The release mechanism and disconnect switches of the swinging section in sliding doors shall function as intended for 250 cycles of operation without failure or excessive wear of parts. The opening and closing forces, and the speed of opening and closing shall be recorded at the start of the endurance tests, and shall again be recorded at the end of the endurance tests. Opening and closing forces at the beginning and at the end of the endurance test shall not exceed the maximum forces prescribed in these procedures.

    HISTORY:

    1. Editorial correction (Register 71, No. 52 errata sheets).

    SWINGING DOORS

    Sec. 12-10-102.

    (a) Each door opening when the door(s) is in the 90-degree open position, shall provide a clear opening width of not less than 28 inches (711 mm), with no single leaf less than 24 inches (609 mm) in width.

    (b) Doors in pairs. Doors in pairs shall be equipped with a separate operator for each leaf unless tests with a tandem operator with one leaf jammed in a closed and in a partially open position indicates that the second leaf continues to operate or is free to swing into the open position without exceeding the maximum permitted manual opening pressures. On doors with mechanical controls, one mechanism shall be subjected to fault conditions; during the fault condition the second leaf shall be openable manually without exceeding the maximum permitted opening pressure.

    (c) Closing mechanism. Normal closing of doors shall be by spring action, pressure-operated mechanism or electrically driven mechanism. The closing force measured at the closing stile shall not exceed 40 pounds at any point in the closing arc. The final 10 degrees of closing shall be not less than 1 [1] / 2 seconds.

  • CRSC § 12-72 High relevance — show source text
    1. Two detectors are to be maintained at each ambient temperature for a sufficient length of time to ensure that thermal equilibrium has been reached. The units are then to be tested for sensitivity while connected to a source of supply in accordance with Section 12-72-303 (a), Item 5.
    2. Sensitivity measurements shall be recorded before and during exposure to each ambient temperature in accordance with the sensitivity test.
    3. Each unit shall operate normally in each ambient. The sensitivity readings measured with the units in each ambient temperature shall be within 50 percent of the value recorded in the normal ambient condition.

    (m) Overload.

    1. A detector shall be capable of operating in a normal manner after being subjected to 50 cycles of alarm signal operation at a rate of not more than 6 cycles per minute with the supply circuit to the detector at 115 percent of rated nameplate voltage. Each cycle shall consist of starting with the detector energized in the normal standby condition, initiation of an alarm by smoke or electrical means, and restoration of the detector to normal standby condition.
    2. Rated test loads are to be connected to those output circuits of the detector which are energized from the detector power supply, such as remote indicators, relays, etc. The test loads shall be those devices, or the equivalent, normally intended for connection. If an equivalent load is employed for a device consisting of an inductive load, a power factor of 60 percent is to

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    PROTECTIVE SIGNALING SYSTEMS

    be employed. The rated loads are established initially with the detector connected to a source of supply in accordance with Section 12-72-303 (a), Item 5, following which the voltage is increased to 115 percent of rating. 3. For direct current signaling circuits an equivalent inductive test load is to have the required direct current resistance for the test current and the inductance (calibrated) to obtain a power factor of 60 percent when connected to a 60 Hertz (Hz) alternating current potential equal to the rated direct current test voltage. When the inductive load has both the required direct current resistance and the required inductance, the current measured with the load connected to an alternating current circuit will be equal to 0.6 times the current measured with the load connected to a direct current circuit when the voltage of each circuit is the same.

    1. Separately energized circuits of a detector such as dry contacts shall be capable of operating in a normal manner after being subjected for 50 cycles of signal operation at a rate of not more than 6 cycles per minute while connected to a source of supply in accordance with Section 12-72-303 (a), Item 5, with 150 percent rated loads at 60 percent power factor applied to output circuits which do not receive energy from the detector. There shall be no electrical or mechanical failure of the switching circuit.
    2. The test loads shall be set at 150 percent of rated current while connected to a separate power source of supply in accordance with Section 12-72-303 (a), Item 5.

    (n) Endurance.

    1. A detector shall be capable of operating in a normal manner after being subjected to 6,000 cycles of alarm signal operation at a rate of not more than 10 cycles per minute with the detector connected to a source of supply in accordance with Section 12-72-303 (a), Item 5, and with related devices or equivalent loads connected to the output circuits.
  • CRSC § 0.6 High relevance — show source text

    1. For direct current signaling circuits an equivalent inductive test load is to have the required direct current resistance for the test current and the inductance (calibrated) to obtain a power factor of 60 percent when connected to a 60 Hertz (Hz) alternating current potential equal to the rated direct current test voltage. When the inductive load has both the required direct current resistance and the required inductance, the current measured with the load connected to an alternating current circuit will be equal to 0.6 times the current measured with the load connected to a direct current circuit when the voltage of each circuit is the same.

    2. Separately energized circuits of a detector such as dry contacts shall be capable of operating in a normal manner after being subjected for 50 cycles of signal operation at a rate of not more than 6 cycles per minute while connected to a source of supply in accordance with Section 12-72-303 (a), Item 5, with 150 percent rated loads at 60 percent power factor applied to output circuits which do not receive energy from the detector. There shall be no electrical or mechanical failure of the switching circuit.

    3. The test loads shall be set at 150 percent of rated current while connected to a separate power source of supply in accordance with Section 12-72-303 (a), Item 5.

    (n) Endurance.

    1. A detector shall be capable of operating in a normal manner after being subjected to 6,000 cycles of alarm signal operation at a rate of not more than 10 cycles per minute with the detector connected to a source of supply in accordance with Section 12-72-303 (a), Item 5, and with related devices or equivalent loads connected to the output circuits. There shall be no electrical or mechanical failure or evidence of failure of the detector components. The same detector shall be tested that had been subjected previously to the overload test.
    2. Separately energized circuits of a detector shall be capable of performing acceptably when operated for 6,000 cycles at a rate of not more than 10 cycles per minute. When an electrical load is involved, the contacts of the device shall be caused to make and break the normal current at the voltage specified by Section 12-72-303 (a), Item 5. The load shall represent that which the device is intended to control. The endurance tests of the separately energized circuits may be conducted in conjunction with the endurance test of the detector. There shall be no electrical or mechanical failure of the detector nor undue pitting, burning or welding of any relay contacts.

    (o) Dielectric tests.

    1. A detector shall be capable of withstanding, without breakdown for a period of 1 minute, the application of a 60 Hz alternating potential between high-voltage, live parts and dead-metal parts, and between live parts of high- and low-voltage circuits, except as noted in Item 2. The test potential shall be: A. 1,000 volts RMS plus twice rated voltage for high-voltage circuits.
    2. A detector employing a low-voltage circuit shall be capable of withstanding, for 1 minute without breakdown, a 60 Hz alternating potential of 500 volts RMS applied between low-voltage live parts and dead-metal parts.
    3. Any reference grounds shall be disconnected prior to the test applications.
    4. A transformer, the output voltage of which is essentially sinusoidal, can be varied and can maintain the specified high potential voltage at the equipment during the duration of the test and is to be used to determine compliance with the foregoing.
  • CRSC § 12-72 High relevance — show source text
    1. Endurance test consisting of 40,000 cycles of coded or noncoded signal impulses at rated load and voltage.
    2. Dielectric strength test without breakdown by application of 60 cycle a.c. at twice rated voltage plus 1,000 volts for a period not less than 1 minute.

    (b) Acceptance criteria. There shall be no electrical or mechanical failure, nor any undue pitting, burning or welding of contact during any test.

    SEMICONDUCTOR TESTS

    Sec. 12-72-106.

    (a) General. Semiconductors shall be investigated to determine their suitability for application under all the environmental conditions to which they will be exposed in service.

    The performance tests of the complete device are intended to show the effects of these conditions. The prescribed tests may be supplemented where conditions exceeding those represented by the tests indicated herein may be encountered.

    (b) Test procedure.

    1. Temperature. The system combination is to be connected as in the normal operation test and operated in an oven at 85°C. It is then to be operated in a refrigerator at 0°C. After temperature equilibrium has been maintained in both cases, the unit shall operate as in the normal operation test.
    2. Humidity. The system combination is to be connected as in the normal operation test, and placed in a humidity cabinet maintained at 85 percent humidity, 32°C, for a period of 48 hours. At the end of this time, the unit shall operate as in the normal operation test.
    3. Transient voltage. The system combination shall be subjected to the transient voltages caused by the collapse of the field of a 2-kilovolt-ampere transformer switched on and off on a random basis for 500 cycles.
    4. Acceptance criteria. There shall be no adverse effects on the system combination and the unit shall operate as intended.

    (c) Temperature. A semiconductor shall be operated so as to obtain not more than 75 percent of its rated operating temperature during the normal supervisory condition indicated in Section 12-72-103 (b), Item 5. The rated operating temperature of a semiconductor shall not be exceeded under any condition of operation of the complete unit which produces the maximum temperature dissipation of its components, including the over-voltage test described in Section 12-72-103 (k), Items 1 and 2, and the variable ambient temperature test described in Section 12-72-106 (b), Item 1.

    ELECTRICAL RATING

    Sec. 12-72-107. The electrical rating of a control unit or combination signaling system shall be marked as provided in Section 12-72102 (b). The following ratings shall be marked on the nameplate or may be marked on supplemental labels at the terminal strips:

    (a) Each power supply circuit—the voltage, frequency and maximum input in amperes or watts.

    (b) Each alarm initiating circuit—maximum current output and maximum open-circuit voltage if different than the power supply circuit.

    (c) Each control unit audible alarm or indicating circuit—maximum current output and the maximum open-circuit voltage if different than the power supply circuit.

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    (d) Each combination signaling system sound reproducing control audible alarm circuit-output rating in watts.

    (e) Supplementary—device circuit—maximum current load that may be connected, and the voltage and frequency of supply power other than that of the control unit.

  • CRSC § 12-10 High relevance — show source text

    EXITS

    (f) Nonmetallic materials. Nonmetallic materials may be used as coatings for wearing surfaces, rollers, finishes or for similar purposes if the materials otherwise conform to these requirements.

    ENDURANCE AND PERFORMANCE TESTS

    Sec. 12-10-304.

    (a) Testing laboratory. Tests shall be conducted at a testing laboratory approved by the State Fire Marshal, or tests shall be conducted by a qualified independent fire protection engineer, acceptable to the State Fire Marshal in test facilities acceptable to the State Fire Marshal.

    (b) Report. The test report shall include a detailed description of the releasing mechanism and its intended function; engineering data, shop drawings and photographs; identification of materials as to source, composition, strength and corrosion resistance; the physical or chemical tests including dimension of parts before and after the endurance tests establishing conformance of materials. The report shall include copies of the manufacturer’s installation instructions. The report shall be verified by the laboratory or fire protection engineer responsible for the conduct of the test. The test report and evidence of listing by an approved listing agency may be provided for the applicable portions of these endurance and performance tests.

    (c) Test equipment. The releasing mechanism shall be applied on a suitable door hung on heavy duty ball bearing butts or pivots installed in a suitable metal frame in accordance with the manufacturer’s instructions. A motor-driven mechanism shall be used to actuate the cross-bar so as to release the latches or dead-locking bolts, push the door open and jerk the door shut so that the latches or dead-locking bolts operate as in service. The rate of operation or number of cycles shall be approximately ten per minute. For the test the assembly is to have only the lubrication which is provided at the factory or as recommended by the manufacturer in his installation instructions.

    Note: Mechanisms involving dead-locking bolts may require modification in the test procedure in order to simulate the intended in-service condition. Modifications in the test procedure shall be filed for evaluation and approval before proceeding with the test.

    (d) Releasing pressure. The motor-driven mechanism shall be arranged to apply not to exceed 15 pounds pressure against the cross-bar to release the door latch(es) or dead-locking bolts before the door is pushed open.

    (e) Cycle test. The release mechanism and latches or dead-locking bolts shall function as intended for 100,000 cycles of operation without failure or excessive wear of the parts.

    EMERGENCY OPERATION TEST

    Sec. 12-10-305.

    (a) Releasing pressure. The release mechanism shall be so designed that a horizontal force of 50 pounds or less will actuate the release bar and latches or dead-locking bolt when the latched or locked door is subjected to outward pressure as described in Sections 12-10-305 (c) and (d). The horizontal force shall be applied at any point along the cross-bar perpendicular to the door in the direction of swing.

    (b) Test specimen. The test specimen for the emergency operation test shall be the sample which has been previously subjected to the cycle test specified in Section 12-10-304.

    (c) Testing instrument. The horizontal force applied to the cross-bar shall be measured with a calibrated spring scale or other approved means.

    (d) Outward pressure, single door. A hydraulic loading device or load dynamometer shall be used to apply a horizontal force of 250 pounds against the latching edge in the direction in which the door opens. The thrust load shall be applied to the stile immediately above the latching mechanism.

  • CRSC § 12-10 High relevance — show source text

    Note: Mechanisms involving dead-locking bolts may require modification in the test procedure in order to simulate the intended in-service condition. Modifications in the test procedure shall be filed for evaluation and approval before proceeding with the test.

    (d) Releasing pressure. The motor-driven mechanism shall be arranged to apply not to exceed 15 pounds pressure against the cross-bar to release the door latch(es) or dead-locking bolts before the door is pushed open.

    (e) Cycle test. The release mechanism and latches or dead-locking bolts shall function as intended for 100,000 cycles of operation without failure or excessive wear of the parts.

    EMERGENCY OPERATION TEST

    Sec. 12-10-305.

    (a) Releasing pressure. The release mechanism shall be so designed that a horizontal force of 50 pounds or less will actuate the release bar and latches or dead-locking bolt when the latched or locked door is subjected to outward pressure as described in Sections 12-10-305 (c) and (d). The horizontal force shall be applied at any point along the cross-bar perpendicular to the door in the direction of swing.

    (b) Test specimen. The test specimen for the emergency operation test shall be the sample which has been previously subjected to the cycle test specified in Section 12-10-304.

    (c) Testing instrument. The horizontal force applied to the cross-bar shall be measured with a calibrated spring scale or other approved means.

    (d) Outward pressure, single door. A hydraulic loading device or load dynamometer shall be used to apply a horizontal force of 250 pounds against the latching edge in the direction in which the door opens. The thrust load shall be applied to the stile immediately above the latching mechanism.

    (e) Outward pressure, double doors. A hydraulic loading device or load dynamometer shall be used to apply a horizontal force of 250 pounds against the lock stile of each door of doors in pairs 2 inches (51 mm) in from the edge at midpoint between top and bottom of each door leaf in the direction of door swing.

    (f) Release bar deformation. The cross-bar on a 36-inch (914 mm) wide door shall not be permanently set or deformed in excess of [1] / 4 inch (6 mm), by the test; a spacing of at least 1 inch (25 mm) is to be provided and maintained between the cross-bar and the face of the door when the horizontal force is applied against the cross-bar.

    MARKING

    Sec. 12-10-306. The listee’s name (or approved symbol), type or model designation shall be plainly marked on the releasing assembly. Devices and assemblies which are not listed by an approved listing agency for the intended purpose shall bear a label or other identifying markings as approved by the State Fire Marshal.

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    CHAPTERS

    12-11A and 11B BUILDING AND FACILITY ACCESS SPECIFICATIONS

    Detectable warning products and directional surfaces installed after January 1, 2001, shall be evaluated by an independent entity, selected by the Department of General Services, Division of the State Architect-Access Compliance, for all occupancies, including transportation and other outdoor environments, except that when products and surfaces are for use in residential housing evaluation shall be in consultation with the Department of Housing and Community Development. See Government Code Section 4460.

    PRODUCT APPROVAL FOR DETECTABLE WARNING PRODUCTS AND DIRECTIONAL SURFACES

  • CRSC § 12-72 High relevance — show source text

    There shall be no electrical or mechanical failure or evidence of failure of the detector components. The same detector shall be tested that had been subjected previously to the overload test. 2. Separately energized circuits of a detector shall be capable of performing acceptably when operated for 6,000 cycles at a rate of not more than 10 cycles per minute. When an electrical load is involved, the contacts of the device shall be caused to make and break the normal current at the voltage specified by Section 12-72-303 (a), Item 5. The load shall represent that which the device is intended to control. The endurance tests of the separately energized circuits may be conducted in conjunction with the endurance test of the detector. There shall be no electrical or mechanical failure of the detector nor undue pitting, burning or welding of any relay contacts.

    (o) Dielectric tests.

    1. A detector shall be capable of withstanding, without breakdown for a period of 1 minute, the application of a 60 Hz alternating potential between high-voltage, live parts and dead-metal parts, and between live parts of high- and low-voltage circuits, except as noted in Item 2. The test potential shall be: A. 1,000 volts RMS plus twice rated voltage for high-voltage circuits.
    2. A detector employing a low-voltage circuit shall be capable of withstanding, for 1 minute without breakdown, a 60 Hz alternating potential of 500 volts RMS applied between low-voltage live parts and dead-metal parts.
    3. Any reference grounds shall be disconnected prior to the test applications.
    4. A transformer, the output voltage of which is essentially sinusoidal, can be varied and can maintain the specified high potential voltage at the equipment during the duration of the test and is to be used to determine compliance with the foregoing. The applied potential is to be increased gradually from zero until the required test value is reached and is to be held at that value for 1 minute.

    (p) Abnormal operation.

    1. A detector shall be capable of operating continuously under abnormal conditions without resulting in a fire hazard.

    2. To determine if a detector complies with the requirement of Item 1, it is to be operated under the most severe abnormal conditions liable to be encountered in service while connected to a source of supply in accordance with Section 12-72303 (a), Item 5. Emission of flame or molten metal, or any other manifestation of a fire hazard, is considered to be a failure.

    3. In determining if a detector complies with the requirement with respect to circuit-fault conditions, the fault condition is to be maintained continuously until constant temperatures are attained, or until burnout occurs, if the fault does not result in the operation of an overload protective device. Shorting of electrolytic capacitors would represent a typical fault.

    (q) Transient tests.

    1. Two detectors shall be capable of operating in a normal manner after being subjected to 500 externally induced and 500 internally induced transients while energized from a source of supply in accordance with Section 12-72-303 (a), Item 5, and connected to the devices normally used with the unit.
    2. The primary of a 120/240 volt, 60 Hz, 2 kilovolt-amperes (kVA) isolating power transformer, with the secondary open circuited, is to be connected to the same branch circuit as the detector. The input to the transformer is to be de-energized for approximately 1 second by an automatic switching device at a rate of not more than 6 cycles per minute for 500 cycles.
  • CRSC § 17.8 High relevance — show source text

    Five test trials shall be conducted on each sample with at least a 5-minute interval between each trial. The following readings are to be recorded for each trial at the moment of actuation: (1) visible smoke obscuration, (2) combustion products meter reading, (3) elapsed time of test trial and (4) the monitoring means. If a detector has a variable sensitivity setting, five trials are to be made at the maximum, minimum and nominal sensitivity settings. 6. The detector shall be uniform in operation so that the average of the readings of the smoke density and combustion products meters of the mean three of five trials (highest and lowest not included) of one detector shall be within 50 percent of the mean average of all detectors. If a detector has a variable sensitivity setting, the requirement applies to each setting tested. 7. There shall be no false alarms or effect on operation of a detector set at the maximum sensitivity setting when two representative samples are subjected to the following test conditions: A. Operation for three months in an ambient room temperature of approximately 25 ± 3°C (77 ± 5°F) and relative humidity of 30–50 percent, having a relatively clean atmosphere with minimum air movement. B. Operation for three months in a relatively clean atmosphere in laminal air stream having a velocity of 300 ± 25 fpm. in an ambient room temperature of approximately 25 ± 3°C (77 ± 5°F) and relative humidity of 30–50 percent. C. Ten cycles of humidity variation between 20 and 90 ± 5 percent at room temperature. D. Ten cycles of temperature variation between 17.8°C and 66°C (0°F and 150°F). E. Ten cycles of rapid change of air velocity from 0 to 300 ± 25 fpm. F. Ten cycles of a 2-inch (51 mm) drop of air pressure starting from 29-31 ± 0.5 inch (13 mm) of mercury. G. Fifty cycles of momentary interruption of the detector power supply at a rate of not more than 6 cycles per minute. 8. Two detectors, employing a maximum sensitivity setting are to be mounted in a position of normal use, energized from a source of supply in accordance with Section 12-72-303 (a), Item 5, and subjected to each of the above test conditions. 9. For tests, C, D and F of Section 12-72-303 (g), Item 5, the time of cycling from one extreme to the other shall be a maximum of 1 hour and a minimum of 5 minutes. For test E the air velocity is to be turned on and off abruptly with a maximum of 1 hour between applications. For test F the time of change from one pressure to the other is approximately one-half minute. The cycling is conducted at a rate not faster than once per 10 seconds. Each cycle is to start at one test condition, changing to the other extreme and returning to the original test condition. 10. The test samples subjected to tests A-G of Section 12-72-303 (g), Item 5, are to be tested for sensitivity, see Sections 12-72303 (f) following the completion of the test. The response of the detectors, when tested in accordance with the sensitivity test, shall not vary more than 50 percent from the value obtained prior to the test.

    (h) Deleted.

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    PROTECTIVE SIGNALING SYSTEMS

    (i) Fire test. 1.

  • CRSC § 12-72 High relevance — show source text

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    PROTECTIVE SIGNALING SYSTEMS

    1. Except as specified in Item 1, a bell circuit time-limit-cutout shall operate in not less than 3 minutes nor more than 10 minutes when energized continuously at the maximum rated current value of the circuit to which it is connected, tested at an ambient temperature of 25°C ± 2°C.

    (m) Overload.

    1. Under the conditions specified in Items 2 through 4, a current-interrupting device provided as part of, or intended for use with, a signaling system control unit or equipment shall perform in an acceptable manner during an overload test consisting of not less than 50 make and break operations. There shall be no electrical or mechanical failure of the device, nor shall there be any undue arcing, burning, pitting or welding of contacts.
    2. A control unit or equipment normally supplied from a grounded circuit shall be tested with all normally grounded parts and the enclosure connected through a 15 ampere fuse to the grounded conductor of the supply circuit.
    3. Current-interrupting devices controlling devices on the load side of control equipment power supply terminals shall be tested at 115 percent of rated voltage with a test load equivalent to that which the device is intended to control.
    4. Overcurrent devices in control equipment which includes motor-driven devices or intended to include motors on any of its circuits shall be tested under stalled rotor conditions of the motor.

    (n) Endurance. An operating device included as part of a control unit or combination signaling system shall perform acceptably when tested at the rate and for the number of cycles specified in Table 12-72-1D. When the device controls an electrical load the contacts shall make and break the normal current the device is intended to control for the number of cycles specified. There shall not be any electrical or mechanical failure of the device, nor shall there by any undue arcing, burning, pitting or welding of the contacts. The device shall be tested in conjunction with its related components in the assembly by operating the primary actuating device to produce the signals.

    (o) Dielectric tests.

    1. Except for motors rated at [1] / 2 hp or less, and 250 volts or less, signaling system control units or equipment shall withstand, without breakdown, the application of a 60-cycle alternating potential of twice rated voltage plus 1,000 volts for a period of 1 full minute. The test potential shall be applied to the following parts: A. Between all normally ungrounded current-carrying parts and the enclosure. B. Between all metal current-carrying parts and exposed noncurrent-carrying parts. C. Between all current-carrying metal parts of circuits, including transformer windings, operating at different frequencies of potentials.
    2. Motors rated less than [1] / 2 hp and 250 volts shall withstand for 1 minute without breakdown, the application of a 60-cycle a.c. potential of 900 volts between the frame and winding.

    (p) Abnormal operation.

    1. A control unit shall be capable of operating under abnormal conditions without emission of flame, molten metal or other manifestation of a fire hazard. Excessive temperatures or burnout is indicative of failure.
    2. A control unit connected to a supply circuit of rated voltage shall have its alarm initiating and audible alarm circuits shortcircuited until a constant temperature is attained, or burnout occurs, unless the fault results in operation of an overcurrent device which is an integral component part of the unit.

    (q) **Burnout tests.

  • CRSC § 12-10 Medium relevance — show source text

    (f) Dogging devices. Exit panic hardware mechanisms shall not be equipped with any locking or dogging device, set screw or other arrangement which can be used to prevent release of the door latch or latches, locking device or dead locking bolt when pressure is applied to the cross-bar.

    CONSTRUCTION MATERIALS

    Sec. 12-10-303.

    (a) Strength. The materials used in the assembly of a releasing mechanism shall have mechanical strength equivalent to brass or bronze to perform their intended function.

    (b) Springs. Component springs used in the assembly of a releasing mechanism shall be of material having spring properties equivalent to stainless steel conforming to ASTM A313-67.

    (c) Corrosion resistance of moving parts. Moving parts in the releasing mechanism assembly shall have corrosion resistance equivalent to 300 series stainless steel, or shall show no visual signs of corrosion after being subjected to a salt fog atmosphere per ASTM B117 for a period of 120 hours.

    (d) Nonmoving parts. Nonmoving parts, cases and similar parts shall be of materials, or shall be coated to provide corrosion protection equivalent to 0.0005-inch-thick (0.01 mm) cadmium coated steel as determined by comparison in salt fog atmosphere per ASTM B117 for a period of not less than 16 hours.

    (e) Galvanic action. Coated or uncoated metals used in the assembly of releasing mechanisms shall not be used in combination such as to cause detrimental galvanic action which may adversely affect the function of any part of the assembly.

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    EXITS

    (f) Nonmetallic materials. Nonmetallic materials may be used as coatings for wearing surfaces, rollers, finishes or for similar purposes if the materials otherwise conform to these requirements.

    ENDURANCE AND PERFORMANCE TESTS

    Sec. 12-10-304.

    (a) Testing laboratory. Tests shall be conducted at a testing laboratory approved by the State Fire Marshal, or tests shall be conducted by a qualified independent fire protection engineer, acceptable to the State Fire Marshal in test facilities acceptable to the State Fire Marshal.

    (b) Report. The test report shall include a detailed description of the releasing mechanism and its intended function; engineering data, shop drawings and photographs; identification of materials as to source, composition, strength and corrosion resistance; the physical or chemical tests including dimension of parts before and after the endurance tests establishing conformance of materials. The report shall include copies of the manufacturer’s installation instructions. The report shall be verified by the laboratory or fire protection engineer responsible for the conduct of the test. The test report and evidence of listing by an approved listing agency may be provided for the applicable portions of these endurance and performance tests.

    (c) Test equipment. The releasing mechanism shall be applied on a suitable door hung on heavy duty ball bearing butts or pivots installed in a suitable metal frame in accordance with the manufacturer’s instructions. A motor-driven mechanism shall be used to actuate the cross-bar so as to release the latches or dead-locking bolts, push the door open and jerk the door shut so that the latches or dead-locking bolts operate as in service. The rate of operation or number of cycles shall be approximately ten per minute. For the test the assembly is to have only the lubrication which is provided at the factory or as recommended by the manufacturer in his installation instructions.

  • CRSC § 12-72 Medium relevance — show source text

    (b) Definitions. For the purpose of this standard, the following definitions shall apply:

    1. Fire alarm device, multiple station. Two or more gas-operated single station units interconnected by metal tubing to one or more remote alarm-sounding devices.

    2. Fire alarm device, single station. A self-contained fire alarm system comprising a heat detector, an alarm- sounding device and a stored energy source incorporated in one integral package. The basic types are gas- operated units and springwound units.

    3. Gas-operated type. A device having a temperature-sensitive eutectic element; compressed gas, usually in a liquid state in a cylinder; and a sounding means, such as a horn or whistle. When the eutectic element melts, the compressed gas is released in a gaseous state through the alarm-sounding device.

    4. Spring-wound type. A device having a temperature-sensitive bimetal or eutectic element and a spring-wound type mechanism with clapper mounted within a bell housing. The snap action of the bimetal or melting of the eutectic element releases the spring mechanism resulting in a bell-type sound.

    TEST REPORTS

    Sec. 12-72-201.

    (a) Test Report contents. The report shall include engineering data, and an analysis comparing the design against Sections 1272-201(b) through 12-72-202(g); it shall include operating manuals and photographs. The report shall set forth the tests performed in accordance with this standard and the results thereof.

    (b) Instructions and drawings. A copy of the operating and installation instructions and any related drawings is to be furnished with the sample submitted for investigation to be used as a guide in the examination and test of the unit and for this purpose they need not be in final printed form.

    The instructions and drawings shall include such directions and information as deemed by the manufacturer to be adequate for attaining proper and safe installation, operation and maintenance.

    (c) Rejection for cause. Compliance with these standards will not necessarily mean approval and listing, if, when examined and tested, it is found to have other features which may impair the result intended by these regulations. Unusual constructions may require application of additional performance tests. The State Fire Marshal may refuse to approve any item for cause. (See the Cali- fornia Electrical Code. )

    (d) Devices covered. This standard does not cover electrically operated single- or multiple-station fire alarm devices actuated by heat, smoke or combustion products.

    (e) Temperature classification. The temperature sensitive elements of single- and multiple-station fire alarm devices are to be identified as to their temperature of operation as follows:

    TEMPERATURE CLASSIFICATION RATING RANGE,
    °F (°C)    		 MAXIMUM CEILING TEMPERATURE,
    °F (°C)
    Ordinary 135-174 (57-79) 100 (38)
    Intermediate 175-225 (79-107) 150 (66)

    The maximum rating of a fire alarm device is to be not more than 225°F (107°C).

    (f) Differing constructions. A control unit having materials or forms of construction differing from this standard may be investigated and tested according to the intent of this standard, and if found to be substantially equivalent may be given recognition for approval and listing. The office of the State Fire Marshal shall be consulted for general requirements and performance standards.

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  • CRSC § 12-72 High relevance — show source text

    PROTECTIVE SIGNALING SYSTEMS

    TABLE 12-72-1D—ENDURANCE TEST Col2 Col3
    NORMAL SIGNALING PERFORMANCE OF DEVICE TOTAL NUMBER OF
    CYCLES DEVICE TO BE
    TESTED    		 CYCLES PER
    MINUTE
    Continuous noncode signal for each operation of alarm signal initiating device 6,000 6
    A number of coded or noncode impulses for each operation of alarm signal initiating device 40,000 60
    Preliminary coded or noncode signal impulses followed by continuous signal impulses after
    each operation of alarm signal initiating device    		 40,000
    resetting of device after
    each group of 40 impulses    		 —
    60
    Relays 40,000 60

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    12-72-2 PROTECTIVE SIGNALING SYSTEMS

    SINGLE- AND MULTIPLE-STATION FIRE ALARM DEVICES MECHANICALLY OPERATED TYPE

    STANDARD 12-72-2

    STATE FIRE MARSHAL

    SCOPE

    Sec. 12-72-200.

    (a) Basic. This standard represents the minimum basic requirements for the construction and performance of single- and multiple-station fire alarm devices intended for indoor installation, and to be listed under this classification. The minimum design, construction and performance standards set forth herein are those deemed as minimum necessary to establish conformance to the regulations of the State Fire Marshal.

    (b) Definitions. For the purpose of this standard, the following definitions shall apply:

    1. Fire alarm device, multiple station. Two or more gas-operated single station units interconnected by metal tubing to one or more remote alarm-sounding devices.

    2. Fire alarm device, single station. A self-contained fire alarm system comprising a heat detector, an alarm- sounding device and a stored energy source incorporated in one integral package. The basic types are gas- operated units and springwound units.

    3. Gas-operated type. A device having a temperature-sensitive eutectic element; compressed gas, usually in a liquid state in a cylinder; and a sounding means, such as a horn or whistle. When the eutectic element melts, the compressed gas is released in a gaseous state through the alarm-sounding device.

    4. Spring-wound type. A device having a temperature-sensitive bimetal or eutectic element and a spring-wound type mechanism with clapper mounted within a bell housing. The snap action of the bimetal or melting of the eutectic element releases the spring mechanism resulting in a bell-type sound.

    TEST REPORTS

    Sec. 12-72-201.

    (a) Test Report contents. The report shall include engineering data, and an analysis comparing the design against Sections 1272-201(b) through 12-72-202(g); it shall include operating manuals and photographs. The report shall set forth the tests performed in accordance with this standard and the results thereof.

    (b) Instructions and drawings. A copy of the operating and installation instructions and any related drawings is to be furnished with the sample submitted for investigation to be used as a guide in the examination and test of the unit and for this purpose they need not be in final printed form.

  • CRSC § 12-72 Medium relevance — show source text
    1. For the test specified in Section 12-72-103 (c), Item 1, the audio-input connections of each amplifier of the system are to be connected to an oscillator adjusted to supply a 1,000-cycle signal. All volume and tone controls are to be at their maximum settings, and normal operating condition is considered to be operational with the audio-input-signal potential adjusted to produce audio-output rating of the amplifier. The tests are to be conducted throughout the range of impedance taps with load impedance of the amplifier.

    (d) Fire alarm signal precedence.

    1. Control units designed to serve more than one type of alarm-initiating device or to utilize the audible alarm devices for more than one type of signaling service shall provide priority for manual box signals, and for fire alarm signals in combination signaling systems.
    2. A coded system control unit shall be actuated by one or more initiating devices other than a manual box and by a manual box simultaneously. The manual box signal shall take precedence over other signals.
    3. Combination signaling system shall be actuated to transmit a program or sound signal. A fire alarm initiating device shall be actuated while the program or sound signal is being transmitted. The fire alarm signal shall take priority without any interference or garbling of the alarm signal. Each separate type of program, or sound signal, including all-call or individual room signals shall be actuated without interfering with the fire alarm signal.
    4. Fault conditions shall be introduced in each piece of optional equipment or device and during such fault conditions a fire alarm initiating device shall be actuated. The fire alarm signal shall be transmitted without interference or garbling of the alarm signal.

    (e) Electrical supervision.

    1. Unless otherwise provided, the circuits formed by conductors extended from the terminals of the control unit or combination signaling system shall be so electrically supervised that a trouble signal will be promptly indicated upon the occurrence of a signal break or ground fault condition of its circuits which would prevent normal operation of the combination, control unit, actuating devices and indicating devices. Electrical supervision of the main operating power, power supply to the oscillator or tone generator shall be provided under the conditions set forth in Sections 12-72-103 (e), Items 2 through 4. The above requirements do not apply to the following type of circuits: A. The audible alarm signaling circuits of combination signaling system of the clock-bell program or sound reproducing type, provided all portions of the circuits are used for normal program or signaling purposes not less than once each hour.

    B. Local system circuits intended for use only with sprinkler waterflow alarm or sprinkler-supervisory circuits. C. Current and circuits for trouble signals. D. Current for alternate operation when source of main power supply is interrupted. E. Current supply and circuits for supplementary signal devices, or optional equipment not necessary for the transmission of a fire alarm signal, provided that a break or ground fault will not affect operation of the system for required fire alarm signals. F. Circuit for register or indicating device provided as a part of the control unit.

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    PROTECTIVE SIGNALING SYSTEMS

    G. Audible alarm circuits, provided there are suitable terminal facilities for the connection of either multiple circuits, so that a break or ground fault prevents operation of only one of the circuits; or a return loop circuit so that a break or ground fault does not prevent operation of any alarm signal sounding device or appliance with means provided for testing the continuity of the circuit conductors.

  • CRSC § 104.1 Medium relevance — show source text

    [A] 104.1 General. The building official is hereby authorized and directed to enforce the provisions of this code.

    [A] 104.2 Determination of compliance. The building official shall have the authority to determine compliance with this code, to render interpretations of this code and to adopt policies and procedures in order to clarify the application of its provisions. Such interpretations, policies and procedures:

    1. Shall be in compliance with the intent and purpose of this code.
    2. Shall not have the effect of waiving requirements specifically provided for in this code.

    [A] 104.2.1 Listed compliance. Where this code or a referenced standard requires equipment, materials, products or services to be listed and a listing standard is specified, the listing shall be based on the specified standard. Where a listing standard is not specified, the listing shall be based on an approved listing criteria. Listings shall be germane to the provision requiring the listing. Installation shall be in accordance with the listing and the manufacturer’s instructions, and where required to verify compliance, the listing standard and manufacturer’s instructions shall be made available to the building official.

    [A] 104.2.2 Technical assistance. To determine compliance with this code, the building official is authorized to determine compliance with this code, to require the owner or owner’s authorized agent to provide a technical opinion and report.

    [A] 104.2.2.1 Cost. A technical opinion and report shall be provided without charge to the jurisdiction.

    [A] 104.2.2.2 Preparer qualifications. The technical opinion and report shall be prepared by a qualified engineer, specialist, laboratory or specialty organization acceptable to the building official. The building official is authorized to require design submittals to be prepared by, and bear the stamp of, a registered design professional.

    [A] 104.2.2.3 Content. The technical opinion and report shall analyze the properties of the design, operation or use of the building or premises and the facilities and appurtenances situated thereon to identify and propose necessary recommendations.

    [A] 104.2.2.4 Tests. Where there is insufficient evidence of compliance with the provisions of this code, the building official shall have the authority to require tests as evidence of compliance. Test methods shall be as specified in this code or by other recognized test standards. In the absence of recognized test standards, the building official shall approve the testing procedures. Such tests shall be performed by a party acceptable to the building official.

    [A] 104.2.3 Alternative materials, design and methods of construction and equipment. The provisions of this code are not intended to prevent the installation of any material or to prohibit any design or method of construction not specifically prescribed by this code, provided that any such alternative has been approved.

    Exception: Performance-based alternative materials, designs or methods of construction and equipment complying with the International Code Council Performance Code . This exception shall not apply to alternative structural materials or to alternative structural designs. [DSA-SS, DSA-SS/CC] The International Code Council Performance Code is not permitted by DSA.

    [DSA-SS, DSA-SS/CC & OSHPD 1, 1R, 2, 4 & 5] Alternative system shall satisfy ASCE 7 Section 1.3, unless more restrictive require- ments are established by this code for an equivalent system.

    [DSA-SS, DSA-SS/CC] Alternative systems shall also satisfy the California Administrative Code, Section 4-304.

  • CRSC § 12-7 Medium relevance — show source text

    (b) Structural fire report. Reports of tests involving wall, ceiling-floor, ceiling-roof or beam constructions in which restraint is provided against expansion, contraction or rotation of the construction shall describe the method used to provide this restraint and include details of the restraining frame as well as information recorded during the test concerning the forces imposed on that structure by the test specimen.

    TEST SPECIMEN

    Sec. 12-7-104.

    (a) Representative specimen. The test specimen shall be truly representative of the construction for which classification is desired, as to materials, workmanship and details such as dimensions of parts, and shall be built under conditions representative of those obtaining as practically applied in building construction and operations. The physical properties of the materials and ingredients used in the test specimen shall be determined and recorded. When necessary for evaluation of test reports, the sponsor shall furnish them to the enforcing agency.

    (b) Specimen size. The size and dimensions of the test specimen specified herein are intended to apply for rating constructions of dimensions within the usual general range employed in buildings. If the conditions of use limit the construction to smaller dimensions, a proportionate reduction may be made in the dimensions of the specimens for a test qualifying them for such restricted use.

    DURATION AND CONDUCT OF TESTS

    Sec. 12-7-105.

    (a) Fire endurance. The fire endurance test on the specimen with its applied load, if any, shall be continued until failure occurs, or until the specimen has withstood the test conditions for a period equal to that herein specified in the conditions of acceptance for the given type of construction.

    (b) Hose stream test. Where required by the conditions of acceptance, a duplicate sample shall be subjected to a fire exposure test for a period equal to one-half of that indicated as the resistance period in the fire endurance test, but not for more than 1 hour, immediately after which the sample shall be subjected to the impact, erosion and cooling effects of a hose stream directed first at the middle and then at all parts of the exposed face, changes in direction being made slowly.

    (c) Exemption. The hose stream shall not be required in the case of constructions having a resistance period, indicated in the fire endurance test, of less than 1 hour.

    (d) Optional program. The submitter may elect, with the advice and consent of the testing body, to have the hose stream test made on the sample subjected to the fire endurance test and immediately following the expiration of the fire endurance test. (e) Stream equipment and details. The stream shall be delivered through 2 [1] / 2 -inch (63.5 mm) hose, discharging through a National Standard Play Pipe of corresponding size equipped with a 1 [1] / 8 -inch (22 mm) discharge tip of the standard-taper, smoothbore pattern without shoulder at the orifice. The water pressure and duration of application shall be as specified in Table SFM 12-71A.

    (f) Nozzle distance. The nozzle orifice shall be 20 feet (6096 mm) from the center of the exposed surface of the test sample if the nozzle is so located that, when directed at the center, its axis is normal to the surface of the test sample. If otherwise located, its distance from the center shall be less than 20 feet (6096 mm) by an amount equal to 1 foot (305 mm) for each 10 degrees of deviation from the normal.

    (g) Protection and conditioning of test specimen. The test specimen shall be protected during and after fabrication to ensure normality of its quality and condition at the time of test.

  • CRSC § 12-7 Medium relevance — show source text

    Note: In tests of assemblies with roof coverings, the thermocouples and pads shall be placed on top of the roof covering.

    (b) Ceiling-floor, ceiling-roof assemblies. Temperature readings shall be taken in the center of the plenum, on the bottom side of the floor or roof deck, and on the structural members in fire-endurance tests of ceiling-floor and ceiling-roof assemblies. Thermocouples shall be located on structural steel as specified in Section 12-7-110 (c). In combustible assemblies five or more thermocouples shall be located on the bottom of soffit of joists or beams. Thermocouples shall be placed in representative locations such as at midspan, over joints in the ceiling, over light fixtures, over air-outlet openings or similar locations.

    (c) Thermocouple locations on unexposed side. Temperature readings shall be taken at not less than nine points on the surface of the unexposed side. Five of these shall be symmetrically disposed, one to be approximately at the center of the specimen and four at approximately the center of its quarter sections. The other four shall be located at the discretion of the testing authority to obtain representative information on the performance of the construction under test. None of the thermocouples shall be located nearer than 1 [1] / 2 times the thickness of the construction, or nearer than 12 inches (305 mm) to the edges. An exception shall be made in those cases where there is an element of the construction at the edges which is not otherwise represented in the remainder of the construction. Also, none of the thermocouples shall be located opposite or on top of beams, girders, pilasters or other structural members if temperatures at such points will obviously be lower than at other more representative locations.

    (d) Temperature intervals. Temperature readings shall be taken at intervals not exceeding 15 minutes until a reading exceeding 212°F (100°C) has been obtained at any one point. Thereafter the readings may be taken more frequently at the discretion of the testing body, but the intervals need not be less than 5 minutes.

    (e) Maximum unexposed temperature rise. Where the conditions of acceptance place a limitation on the rise of temperature of the unexposed surface, the temperature end point of the fire endurance period shall be determined by the average of the measurements taken at individual points; except that if a temperature rise 30 percent in excess of the specified limit occurs at any one of these points, the remainder shall be ignored and the fire endurance period judged as ended.

    CLASSIFICATION AS DETERMINED BY TEST

    Sec. 12-7-103.

    (a) Fire exposure report. Results shall be reported in accordance with the performance tests prescribed in these methods. They shall be expressed in time periods of resistance, to the nearest integral minute. Reports shall include observations of significant details of behavior of the material or construction during the test and after the furnace fire is cut off, including information on defor

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    FIRE-RESISTIVE STANDARDS

    mation, spalling, cracking, burning of the specimen or its component parts, continuance of flaming and production of smoke. The form and contents of reports shall be in accordance with Section 12-7-115.

  • CRSC § 12-7 Medium relevance — show source text

    (d) Temperature intervals. Temperature readings shall be taken at intervals not exceeding 15 minutes until a reading exceeding 212°F (100°C) has been obtained at any one point. Thereafter the readings may be taken more frequently at the discretion of the testing body, but the intervals need not be less than 5 minutes.

    (e) Maximum unexposed temperature rise. Where the conditions of acceptance place a limitation on the rise of temperature of the unexposed surface, the temperature end point of the fire endurance period shall be determined by the average of the measurements taken at individual points; except that if a temperature rise 30 percent in excess of the specified limit occurs at any one of these points, the remainder shall be ignored and the fire endurance period judged as ended.

    CLASSIFICATION AS DETERMINED BY TEST

    Sec. 12-7-103.

    (a) Fire exposure report. Results shall be reported in accordance with the performance tests prescribed in these methods. They shall be expressed in time periods of resistance, to the nearest integral minute. Reports shall include observations of significant details of behavior of the material or construction during the test and after the furnace fire is cut off, including information on defor

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    FIRE-RESISTIVE STANDARDS

    mation, spalling, cracking, burning of the specimen or its component parts, continuance of flaming and production of smoke. The form and contents of reports shall be in accordance with Section 12-7-115.

    (b) Structural fire report. Reports of tests involving wall, ceiling-floor, ceiling-roof or beam constructions in which restraint is provided against expansion, contraction or rotation of the construction shall describe the method used to provide this restraint and include details of the restraining frame as well as information recorded during the test concerning the forces imposed on that structure by the test specimen.

    TEST SPECIMEN

    Sec. 12-7-104.

    (a) Representative specimen. The test specimen shall be truly representative of the construction for which classification is desired, as to materials, workmanship and details such as dimensions of parts, and shall be built under conditions representative of those obtaining as practically applied in building construction and operations. The physical properties of the materials and ingredients used in the test specimen shall be determined and recorded. When necessary for evaluation of test reports, the sponsor shall furnish them to the enforcing agency.

    (b) Specimen size. The size and dimensions of the test specimen specified herein are intended to apply for rating constructions of dimensions within the usual general range employed in buildings. If the conditions of use limit the construction to smaller dimensions, a proportionate reduction may be made in the dimensions of the specimens for a test qualifying them for such restricted use.

    DURATION AND CONDUCT OF TESTS

    Sec. 12-7-105.

    (a) Fire endurance. The fire endurance test on the specimen with its applied load, if any, shall be continued until failure occurs, or until the specimen has withstood the test conditions for a period equal to that herein specified in the conditions of acceptance for the given type of construction.

  • CRSC § 12-72 Medium relevance — show source text

    G. Fifty cycles of momentary interruption of the detector power supply at a rate of not more than 6 cycles per minute. 8. Two detectors, employing a maximum sensitivity setting are to be mounted in a position of normal use, energized from a source of supply in accordance with Section 12-72-303 (a), Item 5, and subjected to each of the above test conditions. 9. For tests, C, D and F of Section 12-72-303 (g), Item 5, the time of cycling from one extreme to the other shall be a maximum of 1 hour and a minimum of 5 minutes. For test E the air velocity is to be turned on and off abruptly with a maximum of 1 hour between applications. For test F the time of change from one pressure to the other is approximately one-half minute. The cycling is conducted at a rate not faster than once per 10 seconds. Each cycle is to start at one test condition, changing to the other extreme and returning to the original test condition. 10. The test samples subjected to tests A-G of Section 12-72-303 (g), Item 5, are to be tested for sensitivity, see Sections 12-72303 (f) following the completion of the test. The response of the detectors, when tested in accordance with the sensitivity test, shall not vary more than 50 percent from the value obtained prior to the test.

    (h) Deleted.

    2025 CALIFORNIA REFERENCED STANDARDS CODE 145

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    PROTECTIVE SIGNALING SYSTEMS

    (i) Fire test.

    1. At least two of the four detectors subjected to each of the following combustible tests shall operate for alarm when installed on 30-foot (9144 mm) spacings and exposed to the following four types of controlled test fires. The maximum response time shall be 2 minutes for tests A, B and C, and 4 minutes for test D. A. Paper. Combustible is to be [1] / 2 pound of shredded newsprint type paper, strips to be [1] / 4 to [3] / 8 inch (6 mm to 9 mm) wide, 6 to 24 inches (152 mm to 609 mm) long placed in a receptacle formed of [1] / 4 -inch (6 mm) mesh hardware cloth. The receptacle is to be approximately 12 inches (305 mm) in diameter by 24 inches (609 mm) high with a hardware cloth bottom 6 inches (152 mm) above the base. The combustible is to be ignited at the bottom center. Paper is to be dried prior to test. B. Polystyrene. Combustible is to be 2 ounces of typical foam polystyrene type packing material, with no flame inhibitor, each piece [1] / 4 to [3] / 8 inch (6 mm to 9 mm) diameter, 3 to 10 inches (76 mm to 254 mm) long placed in the same type of receptacle as used for test A. Alternate shape of combustible is cylindrical, [ 3] / 4 inch (19 mm) diameter by [1] / 2 inch (13 mm) high having a [3] / 8 -inch (9 mm) diameter hole. The combustible is to be ignited at the bottom center. C. **Gasoline.
  • CRSC § 0-150 Medium relevance — show source text

    In no case is the wire
    to be smaller than No. 14 AWG.
    2. At fixed parts of rigidly clamped special assemblies of live parts and insulating separators (such as contact springs on relays or cam switches) that are wired at the factory, the
    spacings may be less than those indicated, but not less than1/16 inch for 0-150 volts, and not less than3/32 inch for 151-300 volts, through air and over surface, except as noted
    in the following footnotes.
    3. Nor less than 3/64 inch through air and over surface for 250 volts or less if the equipment which the component part controls does not consume more than 375 volt-amperes or
    more than 5 amperes.
    4. Not less than1/32 inch through air and over surface for a circuit involving a potential or not more than 30 volts and supplied by a primary battery or by a standard Class 2 trans-
    former or by a suitable combination of transformer and fixed impedance having output characteristics in compliance with what is required for a Class 2 transformer.
    5. The spacing through air at installation-wiring terminals may be less than1/4 inch but not less than 1/8 inch if the terminals are recessed in insulating material or have insulating
    barriers so as to confine loose strands of conductors sufficiently to make it unlikely that the terminals will be grounded or short-circuited.|

    2025 CALIFORNIA REFERENCED STANDARDS CODE 121

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    PROTECTIVE SIGNALING SYSTEMS

    TABLE 12-72-1D—ENDURANCE TEST Col2 Col3
    NORMAL SIGNALING PERFORMANCE OF DEVICE TOTAL NUMBER OF
    CYCLES DEVICE TO BE
    TESTED    		 CYCLES PER
    MINUTE
    Continuous noncode signal for each operation of alarm signal initiating device 6,000 6
    A number of coded or noncode impulses for each operation of alarm signal initiating device 40,000 60
    Preliminary coded or noncode signal impulses followed by continuous signal impulses after
    each operation of alarm signal initiating device    		 40,000
    resetting of device after
    each group of 40 impulses    		 —
    60
    Relays 40,000 60

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    12-72-2 PROTECTIVE SIGNALING SYSTEMS

    SINGLE- AND MULTIPLE-STATION FIRE ALARM DEVICES MECHANICALLY OPERATED TYPE

    STANDARD 12-72-2

    STATE FIRE MARSHAL

    SCOPE

    Sec. 12-72-200.

    (a) Basic. This standard represents the minimum basic requirements for the construction and performance of single- and multiple-station fire alarm devices intended for indoor installation, and to be listed under this classification. The minimum design, construction and performance standards set forth herein are those deemed as minimum necessary to establish conformance to the regulations of the State Fire Marshal.

  • CRSC § 1.1.1 Medium relevance — show source text
    1. Performance. This heading is subdivided into two columns. The column labeled “Load” will either list the load that the building element was subjected to during the fire test or it will contain a note number which will list the load and any other significant details. If the building element was not subjected to a load during the test, this column will contain “n/a,” which means “not applicable.”

    The second column under performance is labeled “Time” and denotes the actual fire endurance time observed in the fire test.

    1. Reference Number. This heading is subdivided into three columns: Pre-BMS-92; BMS-92; and Post-BMS-92. The table entry under this column is the number in the Bibliography of the original source reference for the test data.
    2. Notes. Notes are provided at the end of each table to allow a more detailed explanation of certain aspects of the test. In certain tables the notes given to this column have also been listed under the “Construction Details” and/or “Load” columns.
    3. Rec. Hours. This column lists the recommended fire endurance rating, in hours, of a building element. In some cases, the recommended fire endurance will be less than that listed under the “Time” column. In no case is the “Rec. Hours” greater than given in the “Time” column.
    EXAMPLE ENTRY Col2 Col3 Col4 Col5 Col6 Col7 Col8 Col9 Col10
    ITEM
    CODE    		 THICKNESS CONSTRUCTION DETAILS PERFORMANCE PERFORMANCE REFERENCE NUMBER REFERENCE NUMBER REFERENCE NUMBER NOTES REC.
    HOURS
    ITEM
    CODE    		 THICKNESS CONSTRUCTION DETAILS LOAD TIME PRE-
    BMS-92    		 BMS-92 POST-
    BMS-92    		 POST-
    BMS-92    		 POST-
    BMS-92
    W-4-
    M-50    		 45/8″ Core: structural clay tile, see Notes 12,
    16, 21; facings on unexposed side
    only, see Note 18.    		 N/A 25 min 1 3, 4, 24 1/3

    2025 CALIFORNIA EXISTING BUILDING CODE RESOURCE A-19

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    RESOURCE A—GUIDELINES ON FIRE RATINGS OF ARCHAIC MATERIALS AND ASSEMBLIES

    SECTION I—WALLS

    FIGURE 1.1.1

    MASONRY WALLS 0 ″ TO LESS THAN 4 ″ THICK

    10

    5

    0

  • CRSC § 12-72203. Medium relevance — show source text

    (d) Materials.

    1. A part shall be constructed of materials that are acceptable for the intended application and shall be of adequate mechanical strength.

    2. Diaphragms and spring parts shall be made of nonferrous material, such as phosphor bronze, nickel, silver, etc., or of ferrous materials. If ferrous materials are employed, they shall be hermetically sealed or plated so as not to be affected adversely by corrosion.

    3. A eutectic element, if used as the operating member of a fire alarm device, shall be constructed so as not to be affected adversely by conditions to which it is likely to be exposed in service, as represented by the tests described in Section 12-72203.

    4. All exposed parts likely to be affected adversely by corrosion shall be protected by enameling, galvanizing, sherardizing, plating or equivalent means.

    (e) Operating mechanisms.

    1. The moving parts of a fire alarm device shall have sufficient play at bearing surfaces to prevent binding.
    2. The manually operated parts of a fire alarm device shall have sufficient strength to withstand the stresses to which they will be subjected in service.
    3. A gear train driving spring shall be reliably anchored at each end. The spring winding means shall be provided with a positive stop to limit the winding or shall withstand the maximum force likely to be applied without affecting the operation of the mechanism adversely.

    (f) Mechanical assembly.

    1. Any servicing or restoration operations intended to be made by the user shall be simple and capable of being accomplished with ordinary tools.
    2. A device shall be so constructed that parts will not become displaced during or after installation.
    3. An obstruction means, such as a wire mesh screen, shall be provided to prevent the entry of foreign bodies or materials into sounding devices which could prevent their operation.

    (g) Power supervisory feature. A means shall be provided on a unit to automatically indicate that operating power is not available. The indication may be in the form of a flag, target, sight glass, change in mounting position of the fire alarm device or equivalent. A fire alarm device shall be capable of producing an alarm signal for not less than 4 minutes at the point where the loss of operating power is indicated initially. See Section 12-72-203 (l).

    (h) Operating gas.

    1. The operating gas employed in a fire alarm device shall be noncombustible and shall be of a degree of toxicity that will not produce death or serious injury to guinea pigs during a 2-hour exposure to the gas at a concentration of 2 [1] / 2 percent by volume of air.

    2. Refrigerants 12 and 22 are commonly used gases which comply with this requirement.

    PERFORMANCE

    Sec. 12-72-203.

    (a) General.

    1. Representative samples of units in commercial form shall be subjected to the following applicable tests.
    2. If a device(s) is required to be mounted in a definite position in order to function properly, it shall be tested in that position.

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    PROTECTIVE SIGNALING SYSTEMS

    1. If a device is normally intended to be connected to tubing to function, it shall be connected to the maximum length of tubing specified by the manufacturer unless the length of tubing would not have a bearing on its operation.

    (b) Determination of spacings.

    1. The sensitivity of a fire alarm device is to be expressed in terms of spacing limitations.
  • CRSC § 12-72 Medium relevance — show source text

    (g) Power supervisory feature. A means shall be provided on a unit to automatically indicate that operating power is not available. The indication may be in the form of a flag, target, sight glass, change in mounting position of the fire alarm device or equivalent. A fire alarm device shall be capable of producing an alarm signal for not less than 4 minutes at the point where the loss of operating power is indicated initially. See Section 12-72-203 (l).

    (h) Operating gas.

    1. The operating gas employed in a fire alarm device shall be noncombustible and shall be of a degree of toxicity that will not produce death or serious injury to guinea pigs during a 2-hour exposure to the gas at a concentration of 2 [1] / 2 percent by volume of air.

    2. Refrigerants 12 and 22 are commonly used gases which comply with this requirement.

    PERFORMANCE

    Sec. 12-72-203.

    (a) General.

    1. Representative samples of units in commercial form shall be subjected to the following applicable tests.
    2. If a device(s) is required to be mounted in a definite position in order to function properly, it shall be tested in that position.

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    1. If a device is normally intended to be connected to tubing to function, it shall be connected to the maximum length of tubing specified by the manufacturer unless the length of tubing would not have a bearing on its operation.

    (b) Determination of spacings.

    1. The sensitivity of a fire alarm device is to be expressed in terms of spacing limitations. Spacing limitations refer to the maximum distance permitted between devices mounted on smooth ceilings.
    2. Installation spacing limitations of a fire alarm device are developed by an oven test [15-foot (4572 mm) spacing only] or by a fire test. See Sections 12-72-203 (c) and (d).
    3. Determination of spacings is obtained by the testing of ordinary degree ratings. Devices shall be sufficiently sensitive to qualify for at least a 15-foot (4572 mm) spacing limitation.
    4. An ordinary-degree rating, with a spacing of 15 feet (4572 mm), may be tested for sensitivity by being subjected to the oven test. See Section 12-72-203 (c), Item 1. If the device does not operate within 2 minutes, a fire test shall be conducted.
    5. A fire alarm device is not acceptable if it fails to qualify for at least a 15-foot (4572 mm) spacing, i.e., does not operate within 2 minutes in the oven test, and does not operate when subjected to the fire test.

    (c) Oven test.

    1. A fire alarm device shall operate in a normal and uniform manner when tested to the time-temperature curve illustrated in Figure 12-72-2-1. A sample shall be uniform in operation when mounted in the same position inside the oven. Operation is considered uniform if the device operates within a tolerance of 15°F (8.3°C) for an ordinary rated unit and 20°F (11°C) for an intermediate rated unit. A fire alarm device which operates within 2 minutes or less is suitable for a 15-foot (4572 mm) spacing allocation.
  • CRSC § 12-72 Medium relevance — show source text

    (b) Normal operation.

    1. A detector shall be capable of operating for all conditions of its intended performance at all sensitivity settings when employed in conjunction with any related power supply or control unit with which it is intended to be employed and indicating devices to form the system combination covered by the installation wiring diagram and any supplementary information provided.

    2. The test voltage shall be in accordance with Section 12-72-303 (a), Item 5, and the combustion products detector shall be in the normal circuit supervisory standby condition and prepared for normal signaling operation when it is connected to related devices and circuits.

    3. The introduction of combustion products into the detector chamber such as produced by a smoldering cotton lamp wick, rope or equivalent, shall result in the operation of the detector in its intended manner. Section 12-72-303 (p), Item 2.

    (c) Power input and output. The input or output current of each circuit of a combustion products detector shall not exceed the marked rating by more than 10 percent when the detector is operated under the conditions of normal use and with the detector connected to a source of supply in accordance with Section 12-72-303 (a), Item 5.

    (d) Electrical supervision.

    1. All nonreliable components such as electronic tube heaters, blower motors, capacitors, functional heating elements, etc., the failure of which may result in an open or shorted condition shall be electrically supervised. See Sections 12-72-302 (e); 12-72-303 (a), Item 3; 12-72-303 (e) and 12-72-303 (s).

    2. All electrical circuits formed by conductors extending from the installation wiring connections for interconnecting to a power supply or system control units the failure of which may result in an open or ground fault shall be electrically supervised either at the detector or at the control unit to which a detector would be connected. See Section 12-72-302 (e).

    3. The requirements of Sections 12-72-392 (d), Items 1 and 2, do not apply to the following: A. Trouble indicating circuits. B. The circuits of a detector employed only for releasing device service if the fault results in the same operation of the unit as that obtained by detection of combustion products.

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    PROTECTIVE SIGNALING SYSTEMS

    C. A circuit for a supplementary signal annunciator, signal sounding appliance, motor controller or similar appliance provided that a break or a ground fault in no way affects the normal operation of the unit except for omission of the supplementary feature.

    (e) Electrical supervision test.

    1. The electrical circuits formed by conductors extending from the installation wiring connections of a detector for interconnection to a power supply source or system control unit initiating device circuit shall be electrically supervised so that the detector trouble signal or circuit is energized under any of the following fault conditions if the fault prevents normal operation of the detector for fire alarm signals. A. Single open or single ground fault of the connecting field wiring. B. Failure of a nonreliable component. See Sections 12-72-303 (d), Item 1; 12-72-303 (a), Item 3; and 12-72-303 (s).
    2. A motor included in a detector, such as a blower motor which is required to operate continuously during normal operation, shall be supervised to indicate stalling or burnout.
  • CRSC § 12-72 Medium relevance — show source text

    purposes.

    (c) Control unit. A control unit covered by this standard consists of a unit assembly of electrical parts having provisions for the connection of power-supply circuits routed through the control unit equipment by a prescribed scheme of circuitry; signal initiating circuits extended to separate devices by which the operating parts of the control unit are actuated for signals, and to incorporated or separate devices by which the signals are transmitted or indicated to form a coordinated combination system for definite signaling service.

    TEST REPORTS

    Sec. 12-72-101.

    (a) Test report contents. The report shall include engineering data, and an analysis comparing the design against Section 12-72102 (a) through (u); it shall include wiring, diagrams, operating manuals and photographs as set forth in Section 12-72-102 (a), Items 5 and 6; it shall set forth the tests performed in accordance with Sections 12-72-103 (a) through (g) and the results thereof; and shall verify the correctness of the electrical rating required by Section 12-72-107.

    (b) Listed devices. Electrical wiring, material, devices, combination of devices, fittings, appliances and equipment which have been tested and listed by an approved listing agency for the intended purpose and use need not be individually retested.

    The report shall include the catalog number or other readily identifiable marking, the name of the approved listing agency, the laboratory test report number and date. Such individually tested and listed component parts and devices when installed in combination with other devices in a control unit or in a circuit extended from such control unit shall be subjected to the performance standard tests to determine its suitability for use in combination with other component parts, devices, circuits or equipment.

    (c) Listed control units. Control units which by their design are intended to fully comply with the Standard for the Installation, Maintenance and Use of Proprietary, Auxiliary, Remote Station and Local Protective Association may be investigated and tested in accordance with the Standards for Safety established by Underwriters’ Laboratories, Inc., U.L. 864, provided such investigation, test and report incorporates the provisions of the California Electrical Code.

    (d) Rejection for cause. Compliance with these standards will not necessarily mean approval and listing, if, when examined and tested, it is found to have other features which may impair the result intended by these regulations. Unusual constructions may require application of additional performance tests. The State Fire Marshal may refuse to approve any item for cause.

    (e) Systems only. The standard applies to protective signaling systems as defined in the California Electrical Code, and systems or systems components for which application for approval and listing has been filed under the provisions of the California Electrical Code.

    This standard does not cover manual stations, automatic detectors, automatic transmitters or other actuating devices; nor does it cover separately listed bells, registers or other indicating devices which are not provided as a part of the control unit or matched against the output of sound-reproducing equipment.

    (f) Differing constructions. A control unit having materials or forms of construction differing from this standard may be investigated and tested according to the intent of this standard, and if found to be substantially equivalent may be given recognition for approval and listing. The office of the State Fire Marshal shall be consulted for general requirements and performance standards.

    2025 CALIFORNIA REFERENCED STANDARDS CODE 109

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    PROTECTIVE SIGNALING SYSTEMS

    GENERAL

    Sec. 12-72-102.

    (a) **Investigation—Report.

  • CRSC § 12-72 Medium relevance — show source text

    142 2025 CALIFORNIA REFERENCED STANDARDS CODE

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    C. A circuit for a supplementary signal annunciator, signal sounding appliance, motor controller or similar appliance provided that a break or a ground fault in no way affects the normal operation of the unit except for omission of the supplementary feature.

    (e) Electrical supervision test.

    1. The electrical circuits formed by conductors extending from the installation wiring connections of a detector for interconnection to a power supply source or system control unit initiating device circuit shall be electrically supervised so that the detector trouble signal or circuit is energized under any of the following fault conditions if the fault prevents normal operation of the detector for fire alarm signals. A. Single open or single ground fault of the connecting field wiring. B. Failure of a nonreliable component. See Sections 12-72-303 (d), Item 1; 12-72-303 (a), Item 3; and 12-72-303 (s).
    2. A motor included in a detector, such as a blower motor which is required to operate continuously during normal operation, shall be supervised to indicate stalling or burnout.
    3. The heaters of all electronic tubes or other functional heating elements employed in a detector shall be electrically supervised to indicate an open circuit fault by an audible trouble signal if the fault prevents normal operation of the unit.
    4. Internal shorts between any two elements of an electronic tube shall be indicated by either a trouble signal or an alarm signal if such failure prevents normal operation of the unit. Such a failure shall not result in a fire hazard.
    5. Interruption and restoration of any source of electrical power connected to a detector unit shall not cause an alarm signal.
    6. The operation of any manual switching part of a detector unit to other than its normal position while the detector unit is in the normal standby condition shall be indicated by a trouble signal, if the off-normal position of the switch interferes with normal operation of the detector unit.
    7. To determine if a detector unit complies with the requirements for electrical supervision, see Section 12-72-303 (d). The detector is to be tested with the representative system combination in its normal supervisory condition, and the type of fault to be detected is then to be introduced. Each fault shall be applied separately, the results noted and the fault removed. The system combination is then to be restored to its normal supervisory condition prior to establishing the next fault.

    (f) Sensitivity test.

    1. A combustion products detector shall operate within the limits specified below when subjected to a smoldering smoke condition using the combustion products and test equipment described in the following paragraphs. If the detector employs a variable sensitivity setting, test measurements are to be made at maximum, minimum and nominal settings.

    A. Visible Smoke Obscuration Limits—

    0.0 percent per foot maximum (0.013) [1]

    0.2 percent per foot minimum (0.001) [1]

    B. Relative Combustion Products Measurement Limits—

    9.0 volts maximum

    1.0 volt minimum

    C. Monitoring Means— Within 25 percent of the operating limits of the detector rating. 2. Combustion products. A mercerized cotton lamp wick, nominally [7] / 8 inch (22 mm) wide by [1] / 8 inch (3 mm) in cross section and secured by an alligator type clip 3 inches (76 mm) below a removable cover assembly is to be employed as the source of combustion products.

  • CRSC § 12-72 Medium relevance — show source text

    Electrical supervision of the main operating power, power supply to the oscillator or tone generator shall be provided under the conditions set forth in Sections 12-72-103 (e), Items 2 through 4. The above requirements do not apply to the following type of circuits: A. The audible alarm signaling circuits of combination signaling system of the clock-bell program or sound reproducing type, provided all portions of the circuits are used for normal program or signaling purposes not less than once each hour.

    B. Local system circuits intended for use only with sprinkler waterflow alarm or sprinkler-supervisory circuits. C. Current and circuits for trouble signals. D. Current for alternate operation when source of main power supply is interrupted. E. Current supply and circuits for supplementary signal devices, or optional equipment not necessary for the transmission of a fire alarm signal, provided that a break or ground fault will not affect operation of the system for required fire alarm signals. F. Circuit for register or indicating device provided as a part of the control unit.

    2025 CALIFORNIA REFERENCED STANDARDS CODE 115

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    PROTECTIVE SIGNALING SYSTEMS

    G. Audible alarm circuits, provided there are suitable terminal facilities for the connection of either multiple circuits, so that a break or ground fault prevents operation of only one of the circuits; or a return loop circuit so that a break or ground fault does not prevent operation of any alarm signal sounding device or appliance with means provided for testing the continuity of the circuit conductors. H. Circuit for an alarm-indicating device in the same room as the control unit, provided the circuit conductors are installed in a metallic raceway or equivalent to prevent mechanical injury or tampering. 2. Electrical supervision of the main source of operating power. Supervision of a control unit using a rectifier for battery charging shall include supervision of the power supply to the rectifier and the fuse in the load circuit of the battery. 3. Electrical supervision of the power supply to the oscillator or tone generator of a combination signaling system when the signal and its related amplifiers are used for normal room signaling service. The supervisory circuit may be so arranged as to sound the fire alarm control unit trouble signal. 4. Electrical supervision of the signal output of a combination signaling system when the alarm signal oscillator or tone generator and its related amplification devices and circuits are not used for normal signaling. 5. A single break or ground fault in an alarm initiating or indicating circuit, or failure and restoration of the power supply to the control unit, shall not cause transmission of an alarm signal. 6. To determine conformance of a control unit or combination signaling system with the performance and tests requirements of Items 1 through 5, the investigation is to start with the representative system combination in the normal supervisory condition indicated in Section 12-72-103 (b), Item 5; each type of fault to be detected shall be separately introduced in each circuit conductor.

    1. If the off-normal position of any normally preset mechanism or any similar part of the control unit or control equipment requires manual restoration to normal position for proper signaling operation of the control equipment, such off-normal position shall be indicated by a trouble signal. Compliance is to be determined by observation during the normal operation test.
    2. While the control unit or control equipment is in the supervisory condition, any operation of any manual-switching part that may interfere with normal operation of the equipment of transmission of an alarm signal shall be indicated by a trouble signal. The control unit or equipment shall be operated for transmission of signals in each position of the manual-switching parts.
  • CRSC § 722.5.2 Medium relevance — show source text

    FIGURE 722.5.2—DETERMINATION OF THE HEATED PERIMETER OF STRUCTURAL STEEL BEAMS AND GIRDERS

    722.5.2.1 Determination of fire resistance. These procedures establish a basis for determining resistance of structural steel beams and girders that differ in size from that specified in approved fire-resistance-rated assemblies as a function of the thickness of fire-resistant material and the weight ( W) and heated perimeter (D) of the beam or girder. As used in these sections, W is the average weight of a structural steel element in pounds per linear foot (plf). The heated perimeter, D, is the inside perimeter of the fire-resistant material in inches as illustrated in Figure 722.5.2.

    722.5.2.1.1 Weight-to-heated perimeter. The weight-to-heated-perimeter ratios (W/D), for both contour and box fire-resistant protection profiles, for the wide flange shapes most often used as beams or girders are given in Table 722.5.1(4). For different shapes, the weight-to-heated-perimeter ratios (W/D) shall be determined in accordance with the definitions given in this section.

    722.5.2.1.2 Beam and girder substitutions. Except as provided for in Section 722.5.2.2, structural steel beams in approved fire-resistance-rated assemblies shall be considered to be the minimum permissible size. Other beam or girder shapes shall be permitted to be substituted provided that the weight-to-heated-perimeter ratio (W/D) of the substitute beam is equal to or greater than that of the beam specified in the approved assembly.

    722.5.2.2 Sprayed fire-resistive materials (SFRM). The provisions in this section apply to structural steel beams and girders protected with sprayed fire-resistive materials ( SFRM ). Larger or smaller beam and girder shapes shall be permitted to be substituted for beams specified in approved unrestrained or restrained fire-resistance-rated assemblies, provided that the thickness of the SFRM is adjusted in accordance with the following expression:

    Equation 7-17 h 2 = h 1 [( W 1 / D 1 ) + 0.60] / [( W 2 / D 2 ) + 0.60]

    where:

    h = Thickness of SFRM in inches.

    W = Weight of the structural steel beam or girder in pounds per linear foot.

    D = Heated perimeter of the structural steel beam in inches.

    Subscript 1 refers to the beam and SFRM thickness in the approved assembly.

    Subscript 2 refers to the substitute beam or girder and the required thickness of SFRM .

    The fire resistance of structural steel beams and girders protected with intumescent fire-resistive materials shall be determined on the basis of fire-resistance tests in accordance with Section 703.2.

    722.5.2.2.1 Minimum thickness. The use of Equation 7-17 is subject to the following conditions:

    1. The weight-to-heated-perimeter ratio for the substitute beam or girder (W 2 /D 2 ) shall be not less than 0.37.
    2. The thickness of fire protection materials calculated for the substitute beam or girder (T 1 ) shall be not less than [3] / 8 inch (9.5 mm).
  • CRSC § 14.4.6.1 Medium relevance — show source text

    Revise Section 14.4.6.1 as follows:

    14.4.6.1 Testing. Household fire alarm systems shall be tested in accordance with the manufacturer’s published instructions according to the methods of Table 14.4.3.2.

    Revise Section 17.18 as follows:

    17 .18 Fire Extinguisher Electronic Monitoring Device. A fire extinguisher electronic monitoring device shall indicate those conditions for a specific fire extinguisher required by California Code of Regulations, Title 19, Division 1, Chapter 1, Section 574.2 (c) and California Fire Code to a fire alarm control unit.

    Delete the amendments to Section 21.3.6 and adopt the model text.

    Revise Section 12.3.8 as follows:

    12.3.8 (5) Where the vertically run conductors are contained in a 2-hour rated cable assembly, or enclosed (installed) in a 2-hour rated enclosure or a listed circuit integrity (C.I.) cable, which meets or exceeds a 2-hour fire resistive rating.

    23.8.1.2 Positive Alarm Sequence

    23.8.1.2.1 Systems that have positive alarm features complying with 23.8.1.2 shall be permitted if approved by the authority having jurisdiction. Operation of a patient room smoke detector in Group I-2 and R-2.1 occupancies shall not include a positive alarm sequence feature.

    2025 CALIFORNIA FIRE CODE 80-19

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    REFERENCED STANDARDS

    Revise Section 23.8.5.1.2 as follows:

    23.8.5.1.2* Where connected to a supervising station, fire alarm systems employing automatic fire detectors or waterflow detection devices shall include a manual fire alarm box to initiate a signal to the supervising station.

    Exception: Fire alarm systems dedicated to elevator recall control, supervisory service and fire sprinkler monitoring as permitted in section 17.15 of NFPA 72.

    Revise Section 23.8.5.4.1 as follows:

    23.8.5.4.1 Systems equipped with alarm verification features shall be permitted under the following conditions:

    (1) The alarm verification feature is not initially enabled unless conditions or occupant activities that are expected to cause nuisance alarms are anticipated in the area that is protected by the smoke detectors. Enabling of the alarm verification feature shall be protected by password or limited access.

    (2) A smoke detector that is continuously subjected to a smoke concentration above alarm threshold does not delay the system functions of Sections 10.7 through 10.16, 23.8.1.1 or 21.2.1 by more than 30 seconds.

    (3) Actuation of an alarm-initiating device other than a smoke detector causes the system functions of Sections 10.7 through 10.16, 23.8.1.1 or 21.2.1 without additional delay.

    (4) The current status of the alarm verification feature is shown on the record of completion (see Figure 7.8.2(a), Item 4.3).

    (5) Operation of a patient room smoke detector in I-2 and R-2.1 occupancies shall not include an alarm verification feature.

  • CRSC § 12-72 Medium relevance — show source text

    (o) Dielectric tests.

    1. Except for motors rated at [1] / 2 hp or less, and 250 volts or less, signaling system control units or equipment shall withstand, without breakdown, the application of a 60-cycle alternating potential of twice rated voltage plus 1,000 volts for a period of 1 full minute. The test potential shall be applied to the following parts: A. Between all normally ungrounded current-carrying parts and the enclosure. B. Between all metal current-carrying parts and exposed noncurrent-carrying parts. C. Between all current-carrying metal parts of circuits, including transformer windings, operating at different frequencies of potentials.
    2. Motors rated less than [1] / 2 hp and 250 volts shall withstand for 1 minute without breakdown, the application of a 60-cycle a.c. potential of 900 volts between the frame and winding.

    (p) Abnormal operation.

    1. A control unit shall be capable of operating under abnormal conditions without emission of flame, molten metal or other manifestation of a fire hazard. Excessive temperatures or burnout is indicative of failure.
    2. A control unit connected to a supply circuit of rated voltage shall have its alarm initiating and audible alarm circuits shortcircuited until a constant temperature is attained, or burnout occurs, unless the fault results in operation of an overcurrent device which is an integral component part of the unit.

    (q) Burnout tests.

    1. A continuous-duty resistor shall not burn out or be adversely affected while carrying the maximum normal load continuously. An intermittent duty resistor shall carry its maximum rated current on any step for the maximum length of time permitted by limiting devices of the unit.

    2. A transformer operated continuously, at the rated voltage and frequency specified by Section 12-72-103 (a), Item 4, with the enclosure grounded and having a load of three times maximum normal load current connected to its output terminals shall not be adversely affected by injury to the enclosure, nor shall any emission of flame or molten metal occur.

    3. The testing circuit shall be protected by overcurrent devices having a rating of at least ten times the primary current rating of the transformer. Output terminals of the transformer shall be short-circuited, if such a condition results in less than three times the maximum normal load current being drawn from the secondary. Tests shall be continued until constant temperatures are attained or a burnout occurs. Blowing of the fuse on the primary side of the transformer is not considered to be a failure.

    4. If the circuit designs of a control unit or combination signaling system incorporate a time limit cutout or a mercury tube switch wired into the system circuit in such a manner that a short circuit or a ground fault causes the device to carry current in excess of its maximum normal load, it shall withstand the test specified in Items 5 through 7, without introducing a fire hazard.

    5. The device is to be tested in the control equipment as it is intended to be normally used and in series with a protective fuse of the marked maximum rating indicated by the markings on the control unit. All openings in the enclosure of the control equipment shall be covered with surgical cotton, and the enclosure is to be connected to ground through a fuse of the same rating as the protective fuse mentioned above.

    6. The open circuit voltage of the test circuit is to be within 5 percent of the rated voltage; see Sections 12-72-103 (a), Item 4, and 12-72-103 (c), Item 1, of the control equipment circuit in which the device is installed, except that a higher voltage may be used if agreeable to those concerned.

  • CRSC § 1113.6.1.5 Medium relevance — show source text

    3. Release mechanism

    4. Low temperature

    1113.6.1.5 Rung-strength test. Rungs of retractable exit ladder devices shall be capable of withstanding a load of 1,000 pounds (4448 N) when applied to a 3 [1] / 2 -inch-wide (89 mm) block resting at the center of the rung. The test load shall be applied for a period of one hour. The ladder shall remain operational following this test.

    1113.6.1.6 Rung-to-side-rail shear test. Rungs of retractable exit ladder devices shall be capable of withstanding 1,000 (4448 N) when applied to a 3 [1] / 2 -inch-wide (89 mm) block resting on the center rung as near the side rail as possible. The test load shall be applied for a period of one hour. Upon removal of the test load the fasteners attaching the rung to the side rail shall show no evidence of failure. The ladder shall remain operational following the test.

    1113.6.1.7 Release mechanism test. The release mechanism of retractable exit ladder devices shall operate with an average applied force of not more than 5 pounds (22.2 N) for hand-operated releasing mechanisms and an average applied force of not more than 25 pounds (111 N) for foot-pedal types of releasing mechanisms. For these tests, a force gauge shall be applied to the release mechanism, and the average of three consecutive readings shall be computed.

    1113.6.1.8 Low temperature operation test. Representative samples of the exit ladder devices shall be subjected to a tempera- ture of -40ºC in an environmental chamber for a period of 24 hours. The release mechanism shall be operated immediately upon removal from the chamber. The ladder device shall function as intended without any restriction of operation.

    1113.7 Doors and openings. Exit doors and openings shall meet the requirements of Sections 1008.1.2, 1008.8.1.8, 1008.1.9 and 708.6 of the California Building Code. Doors shall not reduce the required width of stairway more than 6 inches (152 mm) when open. Transoms and openings other than doors from corridors to rooms shall be fixed closed and shall be covered with a minimum of [3] / 4 -inch (19 mm) plywood or [1] / 2 -inch (13 mm) gypsum wallboard or equivalent material.

    Exceptions: 1. Existing solid-bonded wood-core doors 1 [3] / 8 inches thick (34.9 mm), or their equivalent may be continued in use. 2. Where the existing frame will not accommodate a door complying with Section 708.6 of the California Building Code, a 1 [3] / 8 - inch-thick (35 mm) solid-bonded wood-core door may be used.

    1113.8 Exit signs. Every exit doorway or change of direction of a corridor shall be marked with a well-lighted exit sign having letters at least 5 inches (127 mm) high.

  • CRSC § 12-72 Medium relevance — show source text

    PROTECTIVE SIGNALING SYSTEMS

    1. A combination signaling system shall be set up representative of normal service conditions against a wood panel wall as specified in Section 12-72-103 (a), Item 3, connected to a supply circuit as indicated in Section 12-72-103 (c), Item 1, and operated under representative normal conditions liable to produce the highest temperatures.

    2. In control units equipped with time-limit cutouts which are not intended to limit the time of alarm-signal operation, the time-limit cutout shall be shunted out of the circuit for the duration of the test.

    3. A control unit or combination signaling system intended to provide impulse signals shall be operated by a testing device to provide one impulse per second, except that if the signal impulses are normally produced by a device which is a part of the control unit or equipment assembly, the test impulses are to be at the rate of normal operation of the device.

    4. Circuits shall be loaded representative of maximum load under normal service conditions. Resistors shall be adjusted for maximum wattage dissipation possible under conditions of normal service.

    5. Except for coils, temperature readings are to be preferably obtained by means of thermocouples. Temperatures are to be considered as constant when three successive readings taken at intervals of 10 percent of the previously elapsed duration of the test, but not less than 5 minute intervals, indicate no change. Temperature rise on coils may be determined by the resistance method or mercury thermometers.

    6. Horizontal screened or ventilation openings subject to accumulation of dust and lint shall be covered with loose cotton.

    7. Materials of construction and fire hazard to buildings shall be considered to be adversely affected if the temperature rise exceeds the limits shown in the following, based on an assumed ambient temperature of 25°C: A. 65°C on wood panels or other combustible material or surfaces adjacent to or upon which a control unit may be mounted in service.

    B. 35°C on rubber or thermoplastic insulation.

    C. 60°C on varnished cloth insulation.

    D. 65°C on surface of coil winding of impregnated organic insulation. E. 125°C on phenolic insulation.

    F. 65°C on a transformer enclosure.

    G. 65°C on fiber insulation.

    H. 30°C at any point on a copper-oxide rectifier. I. 50°C at any point on a selenium rectifier. J. 15°C less than melting point of a sealing compound. K. Rated temperature limit of a capacitor.

    L. 65°C on fuses.

    M. 350°C on embedded resistor.

    1. The test-operating condition shall be continued for a period of not less than: A. Operation under a normal supervisory condition until constant temperatures are attained. B. Operation for 1 hour during normal signaling condition of local system control equipment designed for actuation by automatic devices. Includes control units producing a continuous signal until actuating device is restored to normal or until a circuit-resetting device is manually operated. C. Operation for 15 minutes during normal signaling condition of a local system control unit intended to be actuated by coded manual fire alarm boxes.

    D. Operation of a rectifier at its maximum rated output until constant temperatures are attained.

    (k) Over- and under-voltage operation.

    1. The design of a signaling system shall provide that the system will perform its intended function at 85 percent and at 110 percent of rated voltage. The operating parts of control equipment shall withstand 110 percent of its rated voltage continuously without injury during the normal supervisory condition.
  • CRSC § 12-72 Medium relevance — show source text
    1. The spaces within devices or assemblies which have been individually or as assemblies tested and listed by a nationally recognized testing agency for the intended use need not comply with the provisions of Table 12-72-1C and Section 12-72102 (t), Items 3 and 4. The report shall note such devices and assemblies by reference to the test report.
    2. If a short circuit between uninsulated live-metal parts of the same polarity would prevent the normal signaling operation of the control unit without simultaneously producing a trouble signal, the spacings between such parts shall be not less than those indicated for “other parts” in Table 12-72-1C except in the case of the special devices mentioned in Footnote 2 to the table, the spacing between uninsulated live-metal parts of the same polarity, for any potential of 0-300 volts, shall be not less than [1] / 32 inch (0.8 mm) through air, and the spacing over surface shall be not less than [1] / 16 inch (1.6 mm) unless the smaller over-surface spacings permitted in Footnotes 3 and 4 of Table 12-72-1C.
    3. Spacings may be reduced provided a barrier or liner of suitable moisture-resistant insulating material of sufficient mechanical strength to withstand operation of equipment and arcing is used, and is reliably held in place.

    (u) Speakers—sound equipment. Speakers shall be of an approved type and designed with current capabilities for the intended function and purposes.

    2025 CALIFORNIA REFERENCED STANDARDS CODE 113

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    PROTECTIVE SIGNALING SYSTEMS

    PERFORMANCE

    Sec. 12-72-103.

    (a) General.

    1. The performance of a control unit or combination signaling system shall be investigated by subjecting a representative sample in commercial form to tests described in Sections 12-72-103 (b) through (q). Insofar as possible tests are to be made in the order indicated by the following test headings.

    2. A control unit shall be tested in the position in which it is designed to be installed for proper function.

    3. A combination signaling system console or rack is to be placed in a position simulating an actual installation against a vertical wood wall unless by its design, it is obviously intended for installation in the open. If ventilation openings are provided on the rear surfaces, it is to be spaced out 1 inch (25 mm) from the wall.

    4. Tests shall be made at rated frequency and voltage. The rated voltage for test purposes is considered to be 120 volts for units marked 110–125 volts, or 240 volts if marked 220–250 volts.

    5. Control units intended to be energized by trickle- charged batteries shall be tested at the rated trickle -charge of the battery except for over-and under-voltage tests.

    (b) Normal operation.

    1. A control unit or combination signaling system shall operate reliably and uniformly for all conditions of its intended performance when employed in conjunction with actuating devices, indicating devices and power supplies to form a combination type indicated by the wiring diagram and supplementary information supplied with it.
    2. To determine compliance, actuating devices, indicating devices optional equipment not necessary for transmission of a fire alarm signal, and power supplies are to be connected to the control unit to form a typical combination, and the control unit operated for each condition of its intended performance.
  • CRSC § 12-72 Medium relevance — show source text
    1. A limited-energy detector circuit shall conform to the following: A. The open-circuit voltage between any two wiring terminals and between any terminal and a grounded circuit part or noncurrent carrying metal part shall not exceed 50 volts when the control unit is connected to a power supply source of rated voltage and frequency. B. Overcurrent protection not in excess of 2 amperes shall be provided in such manner that each limited-energy circuit is protected. Current-limiting transformers may be substituted, provided that under condition of short circuit, current flow at the terminals will not exceed 2 amperes.

    (i) Jarring. The control unit or control equipment installed or supported in the position of its normal use connected to a power supply and in supervisory condition shall withstand jarring from impact or vibration such as may be experienced in service by striking the enclosure. Striking the enclosure shall not cause signaling operation of any part nor adversely affect any subsequent normal operation.

    (j) Temperature.

    1. Materials employed in the construction of a control unit or combination signaling system which have not been investigated and reported on by a nationally recognized testing laboratory as an assembly in the form intended for use shall be investigated and tested to determine temperature rises that may adversely affect the materials of construction, normal signaling operation of the equipment and fire hazard to building materials.
    2. A control unit shall be mounted on a wood panel representative of its manner of installation in service. It shall be connected to a power supply as indicated in Section 12-72-103 (a), Item 4, and operated under representative normal conditions liable to produce the highest temperatures.

    116 2025 CALIFORNIA REFERENCED STANDARDS CODE

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    PROTECTIVE SIGNALING SYSTEMS

    1. A combination signaling system shall be set up representative of normal service conditions against a wood panel wall as specified in Section 12-72-103 (a), Item 3, connected to a supply circuit as indicated in Section 12-72-103 (c), Item 1, and operated under representative normal conditions liable to produce the highest temperatures.

    2. In control units equipped with time-limit cutouts which are not intended to limit the time of alarm-signal operation, the time-limit cutout shall be shunted out of the circuit for the duration of the test.

    3. A control unit or combination signaling system intended to provide impulse signals shall be operated by a testing device to provide one impulse per second, except that if the signal impulses are normally produced by a device which is a part of the control unit or equipment assembly, the test impulses are to be at the rate of normal operation of the device.

    4. Circuits shall be loaded representative of maximum load under normal service conditions. Resistors shall be adjusted for maximum wattage dissipation possible under conditions of normal service.

    5. Except for coils, temperature readings are to be preferably obtained by means of thermocouples. Temperatures are to be considered as constant when three successive readings taken at intervals of 10 percent of the previously elapsed duration of the test, but not less than 5 minute intervals, indicate no change. Temperature rise on coils may be determined by the resistance method or mercury thermometers.

    6. Horizontal screened or ventilation openings subject to accumulation of dust and lint shall be covered with loose cotton.

    7. Materials of construction and fire hazard to buildings shall be considered to be adversely affected if the temperature rise exceeds the limits shown in the following, based on an assumed ambient temperature of 25°C: A.

Frequently asked questions

What section requires the test report to compare the design to the standard?

The test-report requirement is in § 12-72-201; the report must include engineering data and an analysis comparing the design against the specified clauses (through § 12-72-202(g)).

Where do the cycle counts (6,000 / 40,000) come from?

The cycle counts come from Table 12‑72‑1D (endurance test table) and the performance/endurance clauses that direct testing to that Table (see § 12-72-103(n) and the Table itself).

Does § 12-72-202 itself list cycle counts?

No — § 12-72-202 details construction, mounting, calibration and supervisory features (including the 4‑minute alarm requirement on initial power-loss indication). Cycle counts are provided in the endurance table and device-specific clauses referenced elsewhere in the standard.

What acceptance criteria apply after endurance testing?

Acceptance requires no electrical or mechanical failure and no undue pitting, burning or welding of contacts; this language appears in device/relay clauses and endurance acceptance notes.

If my device is a detector, which endurance number should I use?

For detectors, follow the detector clause (6,000 cycles at not more than 10 cycles per minute) and any associated load/voltage guidance in the detector sections.

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California Referenced Standards Code