Count the Neutral

[dcsva@aol.com]

120/240VAC/3PH Open Delta
Wires L1,L2,L3,N,GND
Does ARTICLE 310-15-b-4-a apply?
Which then says TABLE 310-15-b-2-a does not apply.

 

[steve66]

Re: Count the Neutral

That is correct, the neutral isn't counted as current carrying, and the derating table doesn't apply since you now have only 3 current carrying conductors.

Steve