Pete, I totally agree with what you said and have been intending to say
it for a long time.
In the county that I live in you don't even have to get a permit to
build a new home in the county (in the communities, you do). You can
build what you want, where you want, and when you want. OTOH, If you are
putting in a septic system you must have a permit for it.
Recently, there was a law passed that states that the utility company
must report your structure to the state before they can hook up the
power to the structure. Once it is reported then an electrical inspector
(note, only electric) does come around and look things over. As you can
imagine, this new law is not going over well in the rural areas and
individuals are looking for ways around it.
....and no, I do not live in a 3rd world country.
He occasionally infests rec.woodworking, too, with similar questions.
Yes, you do really, and no it doesn't. Stryped won't take the initiative to
find out *anything* on his own -- questions that he could easily answer with a
minimum of effort, he brings to the newsgroups. Over and over and over.
And Stryped *does* live in a jurisdiction with Code inspectors.
In many areas yes, in some areas no....
Independent of local code requirements I recommend either
1) pulled wire in EMT or flex
2) NM drilled through the studs with nail plates where indicated.
This would be in preparation for sheathing the interior of the garage
with plywood (actually 7/16 - 1/2 OSB is the lowest cost sheathing)
followed by drywall.
A very nice way to "finish out" a garage and can be done as time &
that said, my neighbor did his garage (bare studs / no interior
sheathing) in NM a couple years. His is hardworking garage; tool
usage, storage, painting, construction.....no problem with the exposed
Starting with the 2002 NEC, this was disallowed. Section 334.10 of
the 2008 NEC reads:
334.10 Uses Permitted. Type NM, Type NMC, and Type NMS cables shall be
permitted to be used in the following:
(1) One- and two-family dwellings.
(2) Multifamily dwellings permitted to be of Types III, IV, and V
construction except as prohibited in 334.12.
(3) Other structures permitted to be of Types III, IV, and V
construction except as prohibited in 334.12. Cables shall be concealed
within walls, floors, or ceilings that provide a thermal barrier of
material that has at least a 15-minute finish rating as identified in
listings of firerated assemblies.
(4) Cable trays in structures permitted to be Types III, IV, or V
where the cables are identified for the use.
Section 334.12(A) prohibits other uses. Since a detached garage is
not a dwelling unit, usage in the garage is governed by 334.10(3),
which require the NM to be concealed.
On Thu, 10 Sep 2009 16:52:21 +0000 (UTC), Wayne Whitney
Most AHJs still consider garages on residential property part of the
dwelling so they can enforce things like 210.52(A)(2).
What you bump up against is, NM "subject to physical damage" needs to
be protected. and that opens up the can of worms, what is "subject to
physical damage". You can't even get inspectors to agree on that
within the same county unless there is a published interpretation.
I have seen it range from, everything has to be in pipe, everything
below 6' 6" in pipe, ENT is OK or just you need it on running boards
across masonry walls.
Another issue is anything below 18" may be called a classified
location (explosion hazard) so outlets are usually mounted high on
the wall compared to the house.
210.8(A)(2) specifically talks about accessory buildings, so it seems
to me it applies whether or not you consider the accessory building as
part of the dwelling unit. Do you have another example?
On Fri, 11 Sep 2009 03:13:41 +0000 (UTC), Wayne Whitney
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) or say it is something else and
lose the GFCI protection, just to require a 15 minute finish over the
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.
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
All that said, I would not second guess what any AHJ might say. As I
said, just the physical damage question runs the whole gamut from no
protection needed to all pipe all the time.
The NEC is not a law of any kind, and the AHJ can pull whatever
unscientific and undocumented requirements they want out of their asses.
This is why you should live in an area without codes and inspectors and
fight to keep the area that way.
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