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  1. PLCs, VFDs, Motors and Controls
    I would post the smell here if i could. ha ha ha! One of the shop workers somehow jammed a 208V plug into a 600V outlet. Then somehow was able to rotate it and turn on the contactor! :surprise: we've had a meeting since then with the workers and plug safety - and if it doesn't fit, don't...
  2. PLCs, VFDs, Motors and Controls
    I have been contacted by a company who purchased a motor control panel that is set up for 380V 3-phase. The Breaker, Motor contacts, and Thermal overloads are all 380V. Currently they have 240 3-phase being supplied to the panel. Are the 380V breaker and thermal overloads safe to operate at this...
  3. General Electrical Discussion
    We have several branch banks that have been installed with no problems (same lighting installation) but with no problems. We have ONE site that has a 20A breaker (can you believe it's circuit breaker #13) tripping almost exactly about every three weeks that powers a track lighting branch...
  4. Other Codes and Standards
    I just had a question on the 12 AWG coming out of my two ovens and water heater. I know they need to be ran with 10 AWG because of the wattage. The 12 AWG handles 30 amps when it has over 90 degree rating. The conductors do have over 90 degree temperature rating. So 110.14(C)(1)(a)(3) states...
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