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circuit breaker
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  1. General Electrical Discussion
    I put in a circuit for a couple of sump pumps today. The nameplate rating on each of the sump pumps was approx. 9.5 amps. (I know it was 9.something.) I put both on a single 20A circuit. I am probably overthinking this, but I am wondering what the chance is of both of them starting at the same...
  2. General Electrical Discussion
    I had 3 electricians come try to uncover why my electricity in a basement bathroom went out. They all agreed there were too many things connected to one circuit breaker, however all the circuit breakers and fuse box are working fine. However the outlets and lights in the bathroom are not...
  3. Residential Electrical Forum
    I have had 2 calls recently (on different residential panels) where a circuit breaker had tripped and was found not clicked into the busbar. It was completely snapped into place prior. What could cause this? Standard BR panel, both were on a 2 pole 20A circuit breaker.
  4. Canadian Electrical Forum
    Hi there, I'm new in Canada and want to build 2 sub-panels with DIN rail parts for my apartments. But I can hardly find all needed components. First, circuit breaker with CSA are available for DIN rail e.g. from Schneider, Siemens or ABB. But they are very expensive, about 3-4 times the price...
  5. PLCs, VFDs, Motors and Controls
    I have a NSX250F circuit breaker by Scneider Electric. The trip unit is magnetic only! So I guess my question is does this circuit breaker provide overload protection or is it just short circuit protection? I look at the time vs I/Ir graph and it has a thermal withstand range. I am unable...
  6. General Electrical Discussion
    Hello, We are importing a new brand of circuit breaker from China. But we need to type-test those before dropping those in our distribution boxes. Does anyone has an equipment like the one as shown in this picture? we are willing to pay for testing per job basis. There's no urgency but we...
  7. Workplace Safety
    There is a new lockout tagout device that was invented by a fellow Local 3 electrician in New York. It is being used everywhere. Instead of locking out one or several circuit breakers, it locks out the entire panel. It is a telescoping bar that attaches to the panel cover screws preventing the...
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