Two three phase circuit in one conduit,effect

[zulma]

There is the statement:

If I have 2sets(3 wire #3/0 and 1w#3/0 GRD and 1W#3/0 Neutral inside 4" PVC
COnduit) for
serve a UPS. There is any violation of the code and/or there is any problems
with the harmonic current due to a unbalanced load.

I read the code and made some calculations: derating Factor, conduit space
40% apply and ground. My problem is to calculate the neutral, if it has to
carry the 70% of the unbalanced load or it could be of the same size of th
ground.


Thanks,

Zulma I. Santiago Cabrera

 

[charlie b]

Re: Two three phase circuit in one conduit,effect

I am closing this duplicate post. See the NEC topic area.