NEC 200

[gwz2]

Under the following three senerios, what is the permitted method(s) to identify the grounded conductor(s) within a building (actually, all the feeders and branch circuits of system(s))?

A) 3? 4W 480/277V system.

B) 3? 4W 208/120V system supplied from the 480V system of A) above when the 208/120v system is not in any of the enclosures of system A) except for the bonding jumper required by 250.30(A).

C) The 480/277V system and the 208/120V system utilize the same enclosures at various points through-out the building.

gwz2

 

[don_resqcapt19]

Re: NEC 200

A) white or gray
B) white or gray(no requirement to have different identification for the two systems)
c) first system is to be white or gray, second system must be white with a stripe other than green (only when both grounded conductors are in same raceway or enclosure)
Don