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Posted by Eric in North TX on June 24, 2006, 1:05 pm
I have a partially completed project, the contractor backed out, after
installing the conduit. Now I have a 2 1/8 i.d. conduit running app.
250' underground with a nylon cord run through it to pull wires. The
original plan was to run 3 strands of 2.0 copper, which is probably
excessive for the intended load. I intended to pick up the project
myself, I have at least advanced amateur wiring skills, but went to
Lowes and priced the job, and found that 3.0 copper was actually
cheaper per ft. Can 3 strands of 3.0 be successfully pulled through
that conduit? Any tips / procedures?
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Posted by RBM on June 24, 2006, 1:23 pm
Without any idea what the intended use for the feeder is, it's impossible to
give advise, however if its a clean straight shot, three 3 conductors will
fit. Just make sure you don't try pulling it with the nylon strand
>I have a partially completed project, the contractor backed out, after
> installing the conduit. Now I have a 2 1/8 i.d. conduit running app.
> 250' underground with a nylon cord run through it to pull wires. The
> original plan was to run 3 strands of 2.0 copper, which is probably
> excessive for the intended load. I intended to pick up the project
> myself, I have at least advanced amateur wiring skills, but went to
> Lowes and priced the job, and found that 3.0 copper was actually
> cheaper per ft. Can 3 strands of 3.0 be successfully pulled through
> that conduit? Any tips / procedures?
>
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Posted by Eric in North TX on June 24, 2006, 1:37 pm
Without any idea what the intended use for the feeder is, it's
impossible to
> give advise, however if its a clean straight shot, three 3 conductors will
> fit. Just make sure you don't try pulling it with the nylon strand
The intended use is to power a workshop with a 4 post lift, air
compressor, welding equipment, and a wood shop (mostly 220v). It is a
one person shop generally, so it would be unusual to have more than one
load at a time, though my so has welded while I sanded or lifted a car,
and with the present hopelessly inadequate feed it browned out the
entire shop.
I had every intention of using the nylon to pull the wire, glad you
mention that, what should be used? I have pulled cars with that stuff,
I thought it was bullet proof.
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Posted by RBM on June 24, 2006, 1:51 pm
If it's strong enough to pull a car it's fine. Usually a thin nylon strand
is blown into the pipe and a poly rope is tied to that for pulling. Is this
a new service or a feeder from an existing panel. If it's a feeder from an
existing panel, you should pull a ground wire along with the feeder. I can't
believe with copper prices as high as they are, that anyone is selling 3/0
cheaper than 2/0
>
> Without any idea what the intended use for the feeder is, it's
> impossible to
>> give advise, however if its a clean straight shot, three 3 conductors
>> will
>> fit. Just make sure you don't try pulling it with the nylon strand
>
> The intended use is to power a workshop with a 4 post lift, air
> compressor, welding equipment, and a wood shop (mostly 220v). It is a
> one person shop generally, so it would be unusual to have more than one
> load at a time, though my so has welded while I sanded or lifted a car,
> and with the present hopelessly inadequate feed it browned out the
> entire shop.
> I had every intention of using the nylon to pull the wire, glad you
> mention that, what should be used? I have pulled cars with that stuff,
> I thought it was bullet proof.
>
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Posted by Jack on June 24, 2006, 2:04 pm
>
> Without any idea what the intended use for the feeder is, it's
> impossible to
>> give advise, however if its a clean straight shot, three 3 conductors
>> will
>> fit. Just make sure you don't try pulling it with the nylon strand
>
> The intended use is to power a workshop with a 4 post lift, air
> compressor, welding equipment, and a wood shop (mostly 220v). It is a
> one person shop generally, so it would be unusual to have more than one
> load at a time, though my so has welded while I sanded or lifted a car,
> and with the present hopelessly inadequate feed it browned out the
> entire shop.
> I had every intention of using the nylon to pull the wire, glad you
> mention that, what should be used? I have pulled cars with that stuff,
> I thought it was bullet proof.
>
You should be able to pull up to five THHN or THWN #3/0 conductor in a 2"
conduit by code. I would also use pulling lube (also known as soap) which
you could buy at Lowes as well.
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