UL 508A Frequently Asked Questions

Q. How are wiring methods (bussbar and cable bracing) addressed by UL508A for high SCCR panels?

A. They are not. For more than the 10kA default value for busbars from Table SB4.1 a UL evaluated busbar system with a high fault rating would need to be used.

Category: Application

Keywords: Wiring methods, bus bar, cable bracing, UL 508A, high SCCR,