- Location
- Windsor, CO NEC: 2017
- Occupation
- Service Manager
Re: no panel, grounded conductor
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. )
What is a sub-panel? The NEC doesn't define them.Originally posted by LarryFine:
This has always confused me. You can run a 100-amp service on a #2 al. feeder, so why not a sub-panel feeder?Originally posted by augie47:
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/BI ran a #2 al. SE on a 100a. breaker to a sub-panel,
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. )