no panel, grounded conductor

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George Stolz

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Re: no panel, grounded conductor

Originally posted by LarryFine:
Originally posted by augie47:
I ran a #2 al. SE on a 100a. breaker to a sub-panel,
this could lead back to the HVAC OCP thread, but I suspect you might raise the eyebrows on more than one inspector with a #2 AL on a 100 amp C/B
This has always confused me. You can run a 100-amp service on a #2 al. feeder, so why not a sub-panel feeder?
What is a sub-panel? The NEC doesn't define them.

If a "sub-panel" is a main feeder to an individual dwelling unit, then you can use this table if you also qualify for the other variables.

Example: Large parallel conductors feeding a main disconnect for an apartment building don't comply with the description in 310.15(B)(6), so those conductors would have to be sized to 310.16.

However, after the meters, between the OCPD's that supply the feeders and the lighting/appliance panelboards for each individual dwelling unit, those conductors do conform to the description, so those feeder conductors could be sized to 310.15(B)(6), if you wish.

(But you aren't required to. ;) )
 
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