Lighting fixtures used in a commercial apartment expansion project featured low PF ballast and used two phases sharing a neutral. The result caused excess current on the neutral and a potentially hazardous situation....More
With the exception of the incandescent light bulb, every load today creates harmonics. Unfortunately, these loads vary with respect to their amount of harmonic content and response to problems caused by harmonics....More
Abstract: In this webinar, Mike will not only explain the current NEC requirements for GFCIs and AFCIs, but he'll explain how they operate, what causes their premature failure, and when they won't provide the safety protection you might have thought they would.