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Wayne Whitney

On 2009-09-11, wrote:

As AHJ you have 2 choices. You can say a garage is part of a dwelling
and be able to enforce 210.8(A)(2)

From the 2008 NEC:

210.8 Ground-Fault Circuit-Interrupter Protection for Personnel.
(A) Dwelling Units [ . . . ]
(2) Garages, and also accessory buildings that have a floor located at
or below grade level not intended as habitable rooms and limited to
storage areas, work areas, and areas of similar use

My point was just that you don't have to consider a detached garage
part of the dwelling unit for it to be covered by 210.8(A)(2). It
would still fall under "accessory buildings that have a floor located
at or below grade level not intended as habitable rooms" clause.

It is a lot easier as the AHJ to use the "subject to physical
damage" clause and require that the NM gets sleeved in a raceway,
typically up to 6.5 feet or to the ceiling.

Sure, that's always an option, that clause provides a lot of leeway.

There are other codes here you also have to deal with. If this is
not part of a dwelling (a residential garage) the fire protection
and ventilation requirements might be onerous for the builder

I think most codes have a specific classification for accessory
buildings to a dwelling unit that are not habitable space. For some
reason the NEC only deals with the issue peripherally.

Cheers, Wayne