- Location
- Connecticut
- Occupation
- Engineer
Based on the exact wording of 210.25, I agree with this.
I'd have to again say that the exact wording of 210.25 prohibits Charlie's example of running a branch circuit from a panel in unit A, through the attic of unit B, and connecting it to a laundry receptacle back in unit A. But the more I consider the wording of the section, the less it seems to imply what that loads in one dwelling unit can't be supplied from the panel in another dwelling unit.
The section says:
210.25 Branch Circuits in Buildings with More Than One Occupancy.
(A) Dwelling Unit Branch Circuits. Branch circuits in each dwelling unit shall supply only loads within that dwelling unit or loads associated only with that dwelling unit.
(B) Common Area Branch Circuits. Branch circuits required for the purpose of lighting, central alarm, signal, communications, or other needs for public or common areas of a two-family dwelling, a multifamily dwelling, or a multi-occupancy building shall not be supplied from equipment that supplies an individual dwelling unit or tenant space.
The branch circuit in the attic of Dwelling Unit B is undoubtedly "in" Unit B, but it is supplying loads that are within Unit A. But what was bothering me as I thought about it more was that nothing in this section would prevent a "feeder" being run from Panel A to feed a subpanel in B, as long as the branch circuits originating in subpanel B fed loads only in or associated with Dwelling Unit B.
Is there some other section that would prevent this?