Buildings on the same lot treated as one

[retire09]

The Building Code will allow several buildings on the same lot to be treated as one building if all combined do not exceed the size allowed for a single building. This will allow less than the normal separation between buildings without rated walls.
Would the NEC allow this to be fed as one building with multiple feeds to tenants in the other buildings from the one with the actual utility service equipment? (225-30)
Is this one building or several separate buildings when determining service design?

 

[Smart $]

Is this one building or several separate buildings when determining service design?

I believe the latter: several separate buildings.

 

[lowryder88h]

bulidings

bulidings

IMHO, sounds like two buildings to me, I can only speak from experience in the area in which I live, our building insp. said it would be 2 seperate buildings. Two services.

 

[charlie b]

The NEC defines “building” in two ways. One is a structure separated from all others. That sounds like your situation. The other allows two structures that have a common wall to be considered two separate buildings, if certain restrictions on fire ratings are met. That does not sound like your situation. I therefore have to agree that you cannot serve separate tenants in the second building from service equipment in the first building.

You do have another option, however. You can have one service to the first building, and run a single feeder to a switchboard in the second building. You then feed each tenant in the second building from that switchboard. This may or may not be cheaper or more convenient than having two services, but that question is yours to answer.