| Electrical semantics [message #59554] |
Fri, 09 October 2009 17:48  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma:
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When I do advance work for rock shows and corporate business shows I have to advance the power. For our portable distros I need 120/208 3ph (3 hots, N and G) from say 100A-400A depending on the show and I refer to this as a 5 wire system. If someone were to say they had a 4 wire system I would think that would be 3 hots and a ground with no neutral for running 3 ph motors etc. with no 120V component. The only other thing it could be is single phase with 2 hots, N and G to call it 4 wire. One theater I am talking to is specing the 3 hots, N and G as a 4 wire system apparently not counting the ground. I say this should be called a 5 wire system as 5 wire feeder cable is used and I have always called it 5 wire. Am I correct?
John Lebetski
Woodstock, IL
77 Eleganza II
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