Pulling large wire in conduit

D

DaveC

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Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I plan
some "pull boxes" in this run?

Thanks,
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DaveC
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"DaveC" <me@privacy.net> wrote in message
news:0001HW.BF7DD12F0004DA07F02845B0@news.readfreenews.net...
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I
plan
some "pull boxes" in this run?
Click to expand...
Try posting this on the Eelectrical forum at
http://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl
 
Do you have a tractor for the pull and something to attach those
conductors to firmly?! I'd count on pull boxes. You'll yank the
conduit out (or pull the whole wall down) trying to pull those
through end to end.

DaveC wrote:
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I plan
some "pull boxes" in this run?

Thanks,
Click to expand...
 
You have to be kidding.... "should you plan some pull boxes in this
run?" ...... absolutely yes..... a pull box at each 90 deg elbow.
- - - - - - - -- - -
 
"DaveC" <me@privacy.net> wrote in message
news:0001HW.BF7DD12F0004DA07F02845B0@news.readfreenews.net...
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I
plan
some "pull boxes" in this run?

Thanks,
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC
me@privacy.net
This is an invalid return address
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Click to expand...

I would use a fish tape to install a rope of at least 1/4inch or larger,
first. If you train the wires through the loop at the end of the rope so
that they are staggered and tape the head down all should go well.

Lay the wire out straight and somewhere it is dry, lube as you pull.
 
"DaveC" <me@privacy.net> wrote in message
news:0001HW.BF7DD12F0004DA07F02845B0@news.readfreenews.net...
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I
plan
some "pull boxes" in this run?
Click to expand...
Only one 90 degree bend is ok. But can't you get inspection elbows. These
have a removeable cover on the side of the elbow that allows cables to be
pulled out then fed back in again.
 
You should have an electrician give you the proper specifications for
the job.
What you are proposing may not meet code.
 
"DaveC" <me@privacy.net> wrote in message
news:0001HW.BF7DD12F0004DA07F02845B0@news.readfreenews.net...
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I
plan
some "pull boxes" in this run?

Thanks,
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC
me@privacy.net
This is an invalid return address
Please reply in the news group
Click to expand...
I've never pulled wire. The only two knowledgeable people I ever heard
speak about it both said to do a pull in the middle of a straight section,
not at a ninety.

FWIW.

j
 
you have 4 X 90 deg bends? I think you should put a box between the two..
I'm not sure if a total of 360 deg is impossible to pull. between 50
feet... yikes.. lemme know how that goes..

"DaveC" <me@privacy.net> wrote in message
news:0001HW.BF7DD12F0004DA07F02845B0@news.readfreenews.net...
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I
plan
some "pull boxes" in this run?

Thanks,
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC
me@privacy.net
This is an invalid return address
Please reply in the news group
Click to expand...
 
With 4 90-degee turns, even with a lubricant the pull, while possible,
may be probemlematic. You could possibly accomplish it using a
hydraullic cable puller, but even then the outsome would be a bit of a
risk.

Is there a reason why you can't employ mid-run pull boxes?

Harry C.
 
On Fri, 21 Oct 2005 18:32:23 -0500 "operator jay" <none@none.none>
wrote:

I've never pulled wire. The only two knowledgeable people I ever heard
speak about it both said to do a pull in the middle of a straight section,
not at a ninety.
Click to expand...
That sounds quite odd. The corners are what will give you all the
friction, so they make special pull boxes, sort of an L-shaped cast
box with a long removable cover that allow you to pull the wire out
there and reinsert it for the next straight run.

Unless one of your straight runs was extremely long, I would not
expect to have to install a pull box in the middle of a run.

# 1 wire is not all that big. This does not sound that hard.

-
-----------------------------------------------
Jim Adney jadney@vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------
 
Code in Canada is no more that 3 90 degree bends in a run without pull
boxes. If you use 4 the pipe had better be very well fastened...something's
probably going to let go.

Fred
<hhc314@yahoo.com> wrote in message
news:1129940897.453079.234830@o13g2000cwo.googlegroups.com...
With 4 90-degee turns, even with a lubricant the pull, while possible,
may be probemlematic. You could possibly accomplish it using a
hydraullic cable puller, but even then the outsome would be a bit of a
risk.

Is there a reason why you can't employ mid-run pull boxes?

Harry C.
Click to expand...
 
"DaveC" <me@privacy.net> wrote in message
news:0001HW.BF7DD12F0004DA07F02845B0@news.readfreenews.net...
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I
plan
some "pull boxes" in this run?

Thanks,
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC
me@privacy.net
This is an invalid return address
Please reply in the news group
Click to expand...
No code book in front of me tonight but I think your conduit is too small
for four # 1 wires for normal power feeds. It's not just wire size that
counts you have to consider current in conductor and heating.

Four 90 degree bends (electricial sweeps) are the limit I think.

Do you need to use lubricant to pull, If I am helping you will use
lubricant, if you pull it's your choice.

I would use a steel cable as a fish tape and a comealong to pull it.

Hugh
>
 
Thus spake Hugh Prescott:

No code book in front of me tonight but I think your conduit is too small
for four # 1 wires for normal power feeds. It's not just wire size that
counts you have to consider current in conductor and heating.

Four 90 degree bends (electricial sweeps) are the limit I think.

Do you need to use lubricant to pull, If I am helping you will use
lubricant, if you pull it's your choice.

I would use a steel cable as a fish tape and a comealong to pull it.
Click to expand...
I ended up using 2 90 degree sweeps and two inspection boxes (90's as well).
Used fish tape to pull nylon rope which was used to pull the wires.

Man, is it hard work. It's not a big job, but no come-along, just two
inexperienced guys huffing and puffing.

An inspection box is an asymmetric item. Pulling the wires into the box in
the longitudinal direction was relatively easy; feeding them back into the
"exit" that is 90 degrees to the body was problematic (especially the last 18
inches, or so). How does one do that last bit of wire so that you don't end
up with a twisted knot of wires that won't fit in the box?

1-1/2 EMT is sufficient for four (one is ground) #1 conductors (NEC tables
referenced).

Thanks for all your help, guys. Mission accomplished.
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC
me@privacy.net
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Please reply in the news group
 
DaveC wrote:
Four AWG #1 conductors in 2-1/2 inch EMT. 50 ft of conduit, four 90 deg.
elbows.

Is this combination reasonable to pull with some lubricant? Or should I plan
some "pull boxes" in this run?

Thanks,
you shouldn't need lube and if it's that tight then
Click to expand...
your not using large enough EMT.
also, you are allowed a total of 360 deg bends in the
pipe.
NE book states no more than 4 bends at 90 degree's
each.
if your going to use access elbows/pull elbows then you
surely don't need lube.


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
 
DaveC wrote:

Thus spake Hugh Prescott:


No code book in front of me tonight but I think your conduit is too small
for four # 1 wires for normal power feeds. It's not just wire size that
counts you have to consider current in conductor and heating.

Four 90 degree bends (electricial sweeps) are the limit I think.

Do you need to use lubricant to pull, If I am helping you will use
lubricant, if you pull it's your choice.

I would use a steel cable as a fish tape and a comealong to pull it.


I ended up using 2 90 degree sweeps and two inspection boxes (90's as well).
Used fish tape to pull nylon rope which was used to pull the wires.

Man, is it hard work. It's not a big job, but no come-along, just two
inexperienced guys huffing and puffing.

An inspection box is an asymmetric item. Pulling the wires into the box in
the longitudinal direction was relatively easy; feeding them back into the
"exit" that is 90 degrees to the body was problematic (especially the last 18
inches, or so). How does one do that last bit of wire so that you don't end
up with a twisted knot of wires that won't fit in the box?

1-1/2 EMT is sufficient for four (one is ground) #1 conductors (NEC tables
referenced).

Thanks for all your help, guys. Mission accomplished.
it's no problem putting them back in , you simply have the Access Elbow
Click to expand...
loose, side the wires through and then in the other pipe. after that you
just sit the elbow on the pipe ends and position the pipe with
wires already inside.


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
 
electricitym@yahoo.com wrote:

You have to be kidding.... "should you plan some pull boxes in this
run?" ...... absolutely yes..... a pull box at each 90 deg elbow.
- - - - - - - -- - -

other wise known as access elbows.
Click to expand...


--
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
 
<electricitym@yahoo.com> wrote in message
news:1129910601.020255.307480@g43g2000cwa.googlegroups.com...
You have to be kidding.... "should you plan some pull boxes in this
run?" ...... absolutely yes..... a pull box at each 90 deg elbow.
- - - - - - - -- - -
Click to expand...
Oh come on! dealing with slack at four 90s is a MUCH bigger pain in the ass
that the pull itself.
To the OP...SQLit's recommendation is the right one.

John
 
Thus spake Igor The Terrible:

How long is the pull?
Click to expand...
60 ft.
--
Please, no "Go Google this" replies. I wouldn't
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DaveC
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