608.4.2 Full-scale testing.
FC § 608.4.2
Stationary energy storage systems shall be subjected to full-scale testing (referred to as "large-scale testing" in NFPA 855) in accordance with ANSI/Underwriters Laboratories (UL) Test Method 9540A (4th edition), entitled "Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems," or other approved test method, or its failure mode and effects documented by other approved test data.













