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Posted by Mike on March 22, 2007, 11:01 pm
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>
>
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> > I read in a NEC summary that a 6 cubic inch pancake box is "only good
> > for the end of a 14/2 run", i.e., no outgoing 14/2 allowed. But I
> > also read (somewhere, not specifically in the NEC) that the pancake
> > box can be used as a junction box, as long as the fixture atached is
> > domed and hence provides the additional cubic inchdes needed for the
> > junction.
>
> > Is the second statement true? If so, do inspectors go along with
> > it?
>
> > If I have 6 outdoor fixtures to install along the front of a building;
> > can I just daisy chain a 14/2 to each location, and leave (2) 1 foot
> > ends hanging out of a hole at each location, claiming a pancake box +
> > domed fixture will be installed at each location (when the building
> > exterior is finished)? I've seen plenty of new construction where the
> > wiring for exterior lights is jsut left hanging, and I assume they get
> > their rough wiring bought off prior to completing the exterior trim/
> > fixtures.
>
> > Mike
>
> Even if it was permitted I would not bring more than one cable into a
> pancake box. When you go to hang the fixtures the extra wires will get in
> the way of the fixture stud and bracket. It will be more trouble then it is
> worth. Talk to the owner/contractor/architect or whoever will be finishing
> the exterior and find out exactly how much depth you have to work with. It
> would be great if you could get a 4" x 1 1/2"octagonal box in for your two
> cables and the box comes out to be flush with the finished exterior. If not
> find a place to put a deep square junction box where it will be accessible
> and bring all of your cables there.
>
> Generally speaking for a rough electrical inspection you would need to have
> your boxes mounted and grounded (If metal). I suppose you could claim to be
> installing surface pancake boxes upon completion of the exterior. It
> depends on the inspector.
This is a good answer and I have no problem installing 1.5" deep
boxes; for some reason I had tought the 1/2" deep pancake box was the
only solution, but I can fit a 1.5" deep box there just as easily. As
long as the box can be mounted externally and against the sheeting I'm
happy; I'll surround the boxes with a 1.5" thick piece of trim anyways
so no issue with the depth. So now as long as my rough in can get by
just having the exterior lamp wires hanging through a hole in the
sheating I'll be good; I'd like to leave the final position/height of
the box (+/- a few inches only) to when the trim/siding is being
installed.
Mike
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