Single Family home with an ADU…considered a two family dwelling. There are two panels supplying branch circuits for each of the spaces Via a single 200 amp meter main (ADU fed from main panel board ) Does a boiler supplying Heat for both units, located in one unit, make the space the boiler is located a “common area“ 210.25 (b) 2017 NEC?
210.25 (B) single family home with an Accessory Dwelling Unit, common areas?
- Thread starter Snowbound
- Start date
shortcircuit2
Senior Member
- Location
- South of Bawstin
I would say you have a violation and would need a public meter...
The Code does not seem to consider electricity included in the rent?
The Code does not seem to consider electricity included in the rent?
- Location
- Connecticut
- Occupation
- Engineer
I'd say no.
jaggedben
Senior Member
- Location
- Northern California
- Occupation
- Solar and Energy Storage Installer
It is completely outside the scope of the NEC to say what is and isn't a common area. You have stated as given that there are two occupancies. That implies that neither dwelling has access to the other. (If this is not true then it's probably not a two family dwelling. But there's a lot of other laws besides the NEC that may care about how that occupancy is defined.)
That said, the boiler being common to both occupancies, in my opinion 210.25 requires the boiler circuit breaker to be accessible in a common area. So for example if the meter main is outside, and contains breakers for each unit's subpanel and the boiler, that would be fine. But if the boiler breaker is in the main unit's subpanel, that would be a violation, especially if that subpanel is inside the unit and not accessible to the other unit.
That said, the boiler being common to both occupancies, in my opinion 210.25 requires the boiler circuit breaker to be accessible in a common area. So for example if the meter main is outside, and contains breakers for each unit's subpanel and the boiler, that would be fine. But if the boiler breaker is in the main unit's subpanel, that would be a violation, especially if that subpanel is inside the unit and not accessible to the other unit.
jaggedben
Senior Member
- Location
- Northern California
- Occupation
- Solar and Energy Storage Installer
The NEC does not give a flying f--- how anything is metered or billed. But the local AHJ and the utility likely have some rules that aren't in the NEC.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Agreed. You could say the "management" is readily available.