Los Angeles County Municipal Code § 1207.3 Fire Code

Where required by the ESS listing, an approved energy storage management system that monitors and balances cell voltages, currents and temperatures within the manufacturer's specifications shall be provided. The system shall disconnect electrical connections to the ESS or otherwise place it in a safe condition if potentially hazardous temperatures or other conditions such as short circuits, over voltage or under voltage are detected. The system shall transmit a trouble signal to an approved location and to an approved annunciator panel if potentially hazardous temperatures or other conditions such as short circuits, over voltage or under voltage are detected.

The approved annunciator panel shall visibly indicate any hazardous temperature and/or other conditions. The location of the annunciator panel shall be approved by the fire code official.

Enclosures of ESS shall be of noncombustible construction. Enclosures are as defined and/or determined by the fire code official.