Regarding the use of EMT tubing in a residence.
Tried to find the answer to the following but couldn't.
Although it probably a lot harder to thread, was wondering if it Is code
permissible to run NM wire in EMT tubing, or must one use individual wires
(individual black, white, and a green Ground) ?
Is THW still the primary choice for residential usage in EMT tubing ?
On Tue, 01 Mar 2005 12:27:23 -0500, email@example.com(Greg) wrote:
Ah ent, gotta love that stuff, very pretty.
I plan using ent to protect wires from the back of a lighted-medicine
cabinet, and the wall box. It's only 4" jump, so I felt safe to use
as for conduit, I believe the OP asked about cheaper, is ent or rnc
cheaper than emt?
When you factor in the price of a bender that he may only use once the
plastic is a lot cheaper. You also won't end up with a few sticks of
EMT that is bent wrong during the learning process. RNC and ENT
connectors are cheaper than EMT.
On Tue, 01 Mar 2005 13:08:06 -0500, The Real Tom <Tom @
I don't mean to argue; I've had no experience with plastic conduit. But
I think that negotiating the learning curve (play on words intended) of
bender usage has been worth my time. I mostly get it right now, but I
have made some wasted pieces in the past. It didn't take that long to
learn, either. My total experience probably adds up to a hundred or so
The main advantage to using a bender is the ease of pulling wire
through the resultant conduit path. Whatever extra time I've spent
bending the conduit has been more than offset by the time SAVED not
having to open up every #$%! elbow to get the wires through. That goes
triple for pulling MORE wires through the same conduit at a later date.
Sorry, I didn't mean to be cryptic. I use THHN/THWN in EMT. It's
single conductor wire available in many sizes and colors. You can put
together whatever combination you need and pull it through the conduit
pretty easily. In fact, if you've used a bender, as opposed to elbow
fittings, you should be able to PUSH a group of wires through a fair
length of EMT without using a snake.
You don't thread emt, you use fittings. If you want to run cable inside of
tubing its ok as long as the tubing is electrically continuous and if it's
used in a wet location, the cable inside it must be rated accordingly
By 'threading' you mean, pulling cable through the pipe, correct?
Anywhoo - I know that we used to pull NM cable through emt and never
had any inspections fail; but it was a short distance (from washing
machine outlet to top of foundation, in a basement).
THW would be fine.
You can use EMT to sleeve NM for physical protection. Just be sure to
use a bushing on the ends. The standard single conductor these days is
THHN/THWN (dual rated). This is a wet location wire rated for 90c. TW
is only 60c. You still see TW "well conductors" but that is about the
only place I see it.
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