Code violation?

885 Views 7 Replies 4 Participants Last post by JonCiccarone, Mar 4, 2016

JonCiccarone

Discussion Starter · Mar 3, 2016

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

JC

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JonCiccarone

Discussion Starter · #4 · Mar 3, 2016

ez2wire said:
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

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JonCiccarone

Discussion Starter · #6 · Mar 4, 2016

Arrow3030 said:
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?

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JonCiccarone

Discussion Starter · #8 · Mar 4, 2016

Arrow3030 said:
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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