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Code violation?

885 Views 7 Replies 4 Participants Last post by  JonCiccarone
Hi, I'm wiring a 100 amp sub panel next to my main load center. I'm running #2 thhn wire in 1 1/4 conduit, the electrical supply store near me only had #2 thhn in black and green. Is it a code violation to use black thhn wire for the neutral in the sub panel? I'm going to wrap white tape around both ends. Thanks

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You did not run a #2 ground did you? You mentioned #2 green.

If so it is fine, but way oversized.
Hi, sorry for miscommunicating, I purchased #2 black and #4 green for ground
4 gauge is the cut off for re identifying a conductor as a neutral. You will need to re identify though. Get the cheapest white tape you can and mark it anywhere it terminates or junctions. #4 for a ground is bigger than required but definitely gets the job done.
Thanks arrow, I used white electrical tape at all terminations for reidentififying the neutral. Just out of curiosity, what would the normal size be for the ground in a sub panel installation?
Number 8 copper is the minimum to open a 100 amp breaker. Number 4 copper can open a 300 amp breaker.
Wow I was way off! Oh well, I'll keep that in mind for next time. Thanks
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