Two Nema 14-20 on one breaker?

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Andy Delle

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Los Angeles CA
I'm re-organizing my shop and need to put an additional 14-20 on the opposite wall. These are temporary use for some power tools. Is it OK to put both receptacles on the same DP breaker? Neither will be used at the same time and both are properly wired with #12/3.

I seem to recall something that special circuits like this must have a dedicated breaker?
 
See 210.23.

I'd say about only way you should be limited to a single outlet on this circuit is if you had utilization equipment fastened in place, and such equipment were more than 50% of branch circuit rating.
 
Adamjamma said:
Not sure but can’t you run from one outlet to the other outlet? Or is that not allowed?
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May not be able to directly land multiple conductors per terminal on a receptacle, but otherwise is acceptable.

Most locking receptacles are designed to land two conductors per terminal as they usually have pressure plate type terminals. EGC can only have one conductor landed on it - but that is code for all receptacle devices anyway, they don't want removal of device to interrupt continuity of EGC.
 
Andy Delle said:
But I didn't know if two TW outlets are allowed on one breaker. I know it's perfectly safe but you know the NEC.
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(I like the answer in post 4)

He's not asking about pigtails or double lugging he's asking if ok to protect both from same breaker
Just like putting 5@15 amp receptacles on same 15 amp breaker? Which tends to not cause problems
 
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