TRANSFORMER OCP NEC ART 450
TRANSFORMER OCP NEC ART 450
(OP)
Hello,
I have a question concerning NEC ART 450. I want to put two xfmers in series. one is 480 to 12470 which then feeds into another that is 12470 to 208.
My question is this: how do I deal with OCP for a xfmer that is 480 on one side and 12470 on the other? Table 450.3 (A) says it is for xfmers over 600 volts.
As I interpet the NEC, I will need OCP for the primary for both xfmers (the 480 side of one and the 12470 side of the other).
Any help would be greatly appreciated.
Thanks!
I have a question concerning NEC ART 450. I want to put two xfmers in series. one is 480 to 12470 which then feeds into another that is 12470 to 208.
My question is this: how do I deal with OCP for a xfmer that is 480 on one side and 12470 on the other? Table 450.3 (A) says it is for xfmers over 600 volts.
As I interpet the NEC, I will need OCP for the primary for both xfmers (the 480 side of one and the 12470 side of the other).
Any help would be greatly appreciated.
Thanks!






RE: TRANSFORMER OCP NEC ART 450
David Castor
www.cvoes.com
RE: TRANSFORMER OCP NEC ART 450