What breakers are rated for HID lighting at 480V?
HID stands for High Intensity Discharge and applies to several types of high output lighting such as high pressure sodium and mercury vapor. This type of lighting is particularly difficult for circuit breakers to switch and requires special testing of the breaker. Only the Siemens BQD 1 Pole 15-30 amp circuit breakers are HID rated at 480Vac.Q: What does the SWD rating mean?A: It means “Switching Duty”. This rating applies to the switching of fluorescent lights ONLY, not HID lights or any other types of loads. The rating is limited by UL to 15-20A, 1 Pole circuit breakers. See the footnotes in the Siemens 2004 SPEEDFAXTM. At 480V, only the Siemens BQD and Siemens Sentron™ ED breakers are SWD rated.Q: Can a user install welding cable in Siemens lugs?A: Circuit breaker lugs must be tested with the type of wire to be used per UL486. UL489 dictates that manufacturers use standard Class B & C stranded wire per UL486 and therefore most standard lugs perform best with standard strand cable. T
