210.25 (A) branch circuits , more than one occupancy. ‘Loads associated with’

S

Snowbound

Member
Location
Alaska
Occupation
Electrical Contractor
There is a single family home(A) with an apartment(B). The boiler is located in (A) but supplies water to (B). It is fed from a panel in (A) the ’Load’ is in (A) but the ‘or loads associated only with that unit, is problematic. No common areas, single meter. Does hot water running through (B) make it a load associated with both units? Seems unreasonable to bring the breaker outside to the meter to comply with NEC. What might the purpose be that someone in B needs to turn off the boiler but not have access to it? thoughts?
 
hbiss

hbiss

EC, Westchester, New York NEC: 2014
Location
Hawthorne, New York NEC: 2014
Occupation
EC
My head hurts. This is an accessory apartment much like millions of others. Power, heat and water is supplied by the home it is part of. If there are any problems the renter has to get in touch with the owner. Unless there are local ordinances, I don't see what the problem is.

-Hal
 
S

Snowbound

Member
Location
Alaska
Occupation
Electrical Contractor
It is an ADU, the Inspector is hung up on “loads associated with“ . since the boiler sends hot water does that mean it’s “Associated” with both?
 
S

Snowbound

Member
Location
Alaska
Occupation
Electrical Contractor
I am trying to reason it out with him. The best I can think of is if there were two meters and I did a load calculation to size the breakers obviously the boilers “load” would go to the unit with the boiler, not some percentage to the adjacent apartment. I think it’s a vocabulary thing, would be nice to find something example somewhere, a picture….i know it’s wrong.
 
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