How man current carrying conductors w/ Common Neutral?

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Old 02-06-06, 02:17 PM
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Question How man current carrying conductors w/ Common Neutral?

Ok this is way the heck off the beaten path of DIY but here it goes.
My father was testing me to see if I could find out how many current carrying conductors you could use with a common neutral.

Now we looked as best we could through the 2005 NEC and just could not find it. Could someone help me locate it in the 2005 NEC I also have the 1996 NEC code handbook as well.

Thanks in advance.
 
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Old 02-06-06, 02:33 PM
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Just so you know, a neutral, or properly a "grounded conductor", IS a current carrying conductor.

This is not an answer you will find in the NEC.
Very basically; for a single phase service you can have two line conductors for a neutral.
For three phase you can have three.

Was there more to the question than this?
 
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Old 02-06-06, 02:46 PM
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actually that was it.
From what he told me it was part of his Journeman test way back in 1980 as he recalls.
I didn't know if it would have been article 215.4 or not.
Thanks for the reply.
 
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Old 02-06-06, 04:47 PM
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Just remember that the different hots need to be from different phases to share a neutral without overloading it. This usually happens automatically, from a 2 or 3-pole breaker, but just keep it in mind.
 
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