I've got a ~20 ft (possibly longer, I'd have to check) run.
I can piece together two standard 10' lengths of EMT with
a coupler. Or, try to find a supplier for the extended lengths
available, locally (then, figure out how to get it home!).
The advantage of the longer length is no offsets in the
middle (for the coupler) -- just at the box ends.
OTOH, I can get crude and *route* a recess in the wooden
joist that's alongside the EMT so the "inside" bulk of
the coupler fits into that recess instead of lying *on*
How "tacky" is this?
I have never seen EMT conduit sold in lenghts longer than 10ft.
Having worked as an electrician, I have never made offsets in EMT by
couplers. Nor have I ever seen any electrician do that. Just put the
coupler on the conduit and put your hangers on the conduit in the normal
manner, staying at least one foot away from the coupler. The conduit
will flex slightly to make a neat appearance and will work just fine.
Obviously, if you use the couplers with screws, dont put the screws
against the wood. Sure you could make a recess in the wood, but why?
You're just making a lot of unnecessary work for yourself.
Halex makes drawn steel connectors that are thinner than the cast zinc
connector and will only offset your EMT about 3/32ds of an inch.
You will not find EMT in anything but 10' from normal suppliers.
That is what U/L calls the "standard" length. There are provisions for
longer lengths but I have never seen it.
On 2/22/2016 10:23 AM, email@example.com wrote:
Yes, but you still end up effectively creating an offset
(the pipe is bent under stress and held in that position
by the clamps affixing it to the structure). I can just
as easily NOT put box offsets in at the ends and "float"
the pipe offset from the structure.
[I think this looks tacky and invites folks to tug on the pipe;
lost a security system at one business by crooks who were smart
enough to realize they could just tug on the EMT to eventually
yank the wires out of the protected camera enclosure -- cuz they
had beaten the last UNPROTECTED camera with a baseball bat!]
I was hoping one of the industrial electric suppliers might carry
it. Or even RMC.
But, getting it *home* would be a challenge. Ten foot lengths are
manageable; 20 is tedious.
E.g., when I buy bar stock, I have it cut to length at the foundry
instead of saving a few pennies and trying to transport 20 ft lengths
home to cut with a hacksaw!
I suspect I could buy 20 ft lengths of EMT or RMC from my metal supplier
but that's a good 10-15 mile trip.
OTOH, if I could buy it at a big box retailer, I could hand carry it the
2 or 3 miles home!
Very... Don't screw with the joists. A reply was posted for 20' sections-
which I wasn't aware of. IDK if you can get a supplier to one off a section.
Use what Greg Fretwell recommends and you won't go wrong.
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