SER conductors

[Horace Ellis]

Can NM-B 4 conductor cable be substituted for SER 4/c cable as a subpanel feeder?

 

[charlie]

Re: SER conductors

Yes, if NM-B is an acceptable wiring method for the type of building you are wiring. The number of conductors is dependant on the number of phases you need and you are also required to take a grounding conductor with the cable.

 

[Horace Ellis]

Re: SER conductors

It is for a single family dwelling 240/120v. Thank you for the reply.

 

[paul32]

Re: SER conductors

Another thing to remember: the NM must use the 60 degree ampacity, where the SER could probably use 75 (assuming the termination allows it). So you might not be able to substitute the same size NM cable as the SER would be.