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UL 9540

Featured san jose fire department truck
Why fire departments and AHJs are pushing back on 9540A

The San Jose, Calif., fire department is leading the push for ignition-based “large-scale fire testing” of lithium-ion based ESS...

October 15, 2024
News fire codes
The difference between UL 9540 and 9540A

By: Lucas Miller – Senior Engineering Consultant, Mayfield Renewables In 2018, the California Solar Energy Industries Association (CAL...

March 26, 2024
Batteries battery question mark
Fire safety code conundrums continue for battery suppliers

Manufacturers of batteries for stationary energy storage are facing a moving target for fire safety code as written by the leading U.S. defi...

February 28, 2024
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