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  1. General Electrical Discussion
    We have a 3 phase 208V Machine(connected to overhead bus) with a 220v/110v step down transformer inside the cabinet that powers a 110v receptacle outside the cabinet.(Very old Machine and no electrical Prints). Today... Someone decided to plug another machine into that receptacle with a...
  2. General Electrical Discussion
    Short circuit on a 20A lighting circuit and it shut down the whole building!! What would have caused this to happen? Why did none of the other breakers in the series trip? Guessing the trip settings on the existing main were dialed down way too low? Needless to say, my guys had a stressful...
  3. General Electrical Discussion
    First off... hello everyone. My name is Nicholas. I am having a persisting electrical issue in my apartment. Way back in the Summer of 2016, my neighborhood experienced two blackouts. One that lasted a few seconds and a few weeks later, another that lasted around 15 hours. The second one took...
  4. General Electrical Discussion
    If there happened to be a power outage of the ENTIRE Eastern Interconnection grid (which produces power for 75% of America), what kind of power surge could we expect upon restoration?
  5. Residential Electrical Forum
    I've been a home service type electrician for almost 12 years now. I've been in business on my own for 4 years and I've finally been stumped! I have a homeowner who says that she loses power in her bedroom on a fairly regular basis. When I show up to troubleshoot, everything tests out fine...
1-5 of 5 Results