Los Angeles County Municipal Code § 1207.4 General installations requirements

Stationary and mobile ESS shall comply with the requirements of Sections 1207.4.1 through 1207.4.13.

In addition to any disconnects and signage required in accordance with the California Electrical Code, disconnects, signage, and access shall be provided in accordance with Section 509, et seq.

Exception: Electrical disconnects for lead-acid and nickel-cadmium battery systems at facilities under the exclusive control of communications utilities and operating at less than 50 VAC and 60 VDC shall be permitted to have electrical disconnects signage in accordance with NFPA 76.

Access and working space shall be provided and maintained about all electrical equipment to permit ready and safe operation and maintenance of such equipment in accordance with the California Electrical Code, the manufacturer's instructions, and Section 603.

Combustible materials shall not be stored in ESS rooms, cabinets, enclosures, areas or walk-in units. Combustible materials in occupied work centers covered by Section 1207.4.10 shall be stored at least 3 feet (914 mm) from ESS cabinets.

ESS that have the potential to release toxic and highly toxic gas during charging, discharging and normal use conditions shall be provided with a hazardous exhaust system in accordance with Chapter 5 of the California Mechanical Code, and shall comply with Chapter 60 of this code where applicable.

Approved permanent engraved signs shall be provided on or adjacent to all entry doors for ESS rooms or areas and on enclosures of ESS cabinets and walk-in units located outdoors, on rooftops or in open parking garages. Signs designed to meet both the requirements of this section and the California Electrical Code shall be permitted. Signage means, attachment, number and location shall also be subject to approval by the fire code official, and shall be retroactive where required by the fire code official. The signage shall include the following or equivalent:

"ENERGY STORAGE SYSTEM," "BATTERY STORAGE SYSTEM," "CAPACITOR ENERGY STORAGE SYSTEM" or the appropriate equivalent.

The identification of the electrochemical, or other, ESS technology present, e.g., "Lead-Acid Batteries", "Nickel-Cadmium Batteries", "[specific type of lithium battery technology] Batteries", "[specific type of sodium battery technology] Batteries", " [specific type of flow battery technology] Batteries", flywheel ESS, etc.

"ENERGIZED ELECTRICAL CIRCUITS."

Where water-reactive electrochemical ESS are present, the signage shall include "APPLY NO WATER."

Current contact information, including phone number, for personnel authorized to service the equipment and for fire mitigation personnel required by Section 1207.1.6.1.

A plan and means must be provided to safely release stored energy from the batteries in an emergency situation, including where an ESS has been damaged by a fire or other event.