Reputable manufacturers go to great effort to acquire certification to demonstrate the safety of their products. However, less reputable manufacturers may forego testing and certification, using counterfeit marks to give the illusion that their products are on par with competitive products, when in fact, they could be dangerous and of unknown quality.
UL Certifies/Lists energy storage systems for use in accordance with new Article 706 in the 2017 NEC. UL Certifies/Lists these systems under the product category Energy Storage Systems and Equipment (FTBW).
My advice to installers is simple but important: Take the time to label the panel correctly. Don’t think of this part of the job as something to do quickly at the end of the installation and without putting much thought behind it. You may just avoid a tragedy if someone can shut something down quickly.
The history of field evaluations dates back to needs expressed by Authorities Having Jurisdiction (AHJs) in the mid-1970s. At this time, several previously abandoned California factories were being revamped to…