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grounding conductor
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  1. Canadian Electrical Forum
    Hey guys, I need your help. My employer and I are in disagreement about the proper connection of the Xo of a transformer. I've been tasked to prove my case. Here it is; 300KVA xfrmr, fed with (3)x(#500MCM Cu RW90) primary off of 3P-400A breaker and ran underground in a PVC raceway which is...
  2. Canadian Electrical Forum
    Hey guys, I need your help. My employer and I are in disagreement about the proper connection of the Xo of a transformer. I've been tasked to prove my case. Here it is; 300KVA xfrmr, fed with (3)x(#500MCM Cu RW90) primary off of 3P-400A breaker and ran underground in a PVC raceway which is...
  3. NEC Code Forum
    I had a rather strange discussion with our electrical inspector today. We were planning on using the conduit as our grounding conductor. I would rather pull ground wire but we are trying to eliminate extra cost. He told me that we can use the conduit as a ground but where it enters any...
  4. General Electrical Discussion
    I am attempting to run some AC cable to my first outlet box and I plan to use an arc-fault receptacle to meet the code requirements of 210.12 (B) Exception #1 - My question is whether or not there is a limitation on the length of run of the AC cable to the first outlet box. 250.118 states that...
  5. NEC Code Forum
    I have a cellular tower site with 5 meters, 1 for local service (lighting) and 4 for future operators. I have a 50 kva transformer in a pole at the front of the property where the meters are located and the tower site is about 100 yards away. I have to ground at the meter location according...
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