Section 3506 — ELECTRIC ARC HOT WORK — 2025 California Fire Code (Title 24, Part 9)

3506.1 General. ¶

3506.1 General. The frame or case of electric hot work machines, except internal-combustion-engine-driven machines, shall be grounded. Ground connections shall be mechanically strong and electrically adequate for the required current.

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3506.2 Return circuits. ¶

3506.2 Return circuits. Welding current return circuits from the work to the machine shall have proper electrical contact at joints. The electrical contact shall be periodically inspected.

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3506.3 Disconnecting. ¶

3506.3 Disconnecting. Electrodes shall be removed from the holders when electric arc welding or cutting is discontinued for any period of 1 hour or more. The holders shall be located to prevent accidental contact and the machines shall be disconnected from the power source.

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3506.4 Emergency disconnect. ¶

3506.4 Emergency disconnect. A switch or circuit breaker shall be provided so that fixed electric welders and control equipment can be disconnected from the supply circuit. The disconnect shall be installed in accordance with the California Electrical Code.

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3506.5 Damaged cable. ¶

3506.5 Damaged cable. Damaged cable shall be removed from service until properly repaired or replaced.

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