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Re: 230.72 (C)
#97135 01/26/06 12:49 AM
Joined: Feb 2004
Posts: 41
NY
R
rknikko Offline OP
Member
So guys, which one is it? Neutral counts as a current carrying conductor OR not? Which derating to use? 70% or 50%???

We dealing with a single phase 120/240V now.
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Re: 230.72 (C)
#97136 01/26/06 01:27 AM
Joined: Jul 2004
Posts: 9,931
Likes: 34
Estero,Fl,usa
G
gfretwell Offline
Member
In single phase, the neutral only carries the unbalanced current. If you are seeing current on the neutral, the current on one of the phases is reduced that much.

Greg Fretwell
Re: 230.72 (C)
#97137 01/26/06 01:32 AM
Joined: Feb 2004
Posts: 41
NY
R
rknikko Offline OP
Member
...and your answer to the question is....
Re: 230.72 (C)
#97138 01/26/06 01:52 AM
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Posts: 9,931
Likes: 34
Estero,Fl,usa
G
gfretwell Offline
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Don't count the neutral in the derating.

Greg Fretwell
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