Jet-line in conduit with conductors

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chris kennedy

chris kennedy

Senior Member
Location
Miami Fla.
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60 yr old tool twisting electrician
Is it permissible to pull a jet-line in a conduit with your conductors?

This is what I mean by jet-line.

jetline.jpg
 
I hope so, cause we do it all the time. (fwiw -we call that pull string , we call jet line the thread like string for blowing in mouses)
 
I have nothing to back this up but are you allowed to pull wire thru a conduit with other wires already installed?
 
This thread will be interesting.....cant wait.........:D

bet its not UL listed for the use, or not fire rated, or you cant calculate the fill properly, or .... or ....or.....:grin:
 
Permissible yes, (300.8) wouldn't want to pull through existing conductors though. might get away with pulling through a heavyily poly-watered run, but why take chances?

As Dirty Harry would say "You've got to ask yourself one question: 'Do I feel lucky?' Well, do ya, punk?"

Just a thought...
 
I usually tie onto the EGC and use it for a pull wire on existing runs...If yur a smooth taper........:D
 
We pull in partially filled conduits with jet line all of the time. Never once had a problem with damaging the conductors.
 
"The Mule" knows how to avoid getting kicked! Been more than one ride on that horse.
 
ok, here's why you leave a pull string here or there:

you do a store, in the front, center, back, left and right of the store you have a pipe that's maybe only got one boat. you know someday they will want something else there. so instead of wasting 1000' of wire, you leave a pull string in each of the unfilled conduits. they call you back to add something, you carfully pull in another boat, have breakfast, and still bank 2 hours on the 4 hr min. service call.
 
Last 5 words "any service other than electrical". Might even be a 110.3(B) violation. I'm playing on the fact that that 225 pound rated Jet-line is not an electrical conductor. I go with "Mule" on using that EGC for my new "pull string" after the fact. That and my friend "PolyWater" :D


Wouldn't get too concerned, seen a heck of lot of "things" that rank higher in the hazard class, than string in a pipe!
 
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Well we have been doing that a few years on control work in trays and conduit it or pull in cable spares or wires it cheaper to use pulls fine and theres nothing in the code .There is lots of uses for polyline pullline check out Jencore .net thats my hobbie inventing new tools for our trade take care best to yas
 
i wouldnt put in a string for that. you can wear insulation off of conductors. if you need to pull in more wires i would pull all of them out. sounds like a pain but i dont want to replace more wire
 
Well you see it is like this...the temperature of the raceway creates a situation where the nylon string melts to a point that the combination of heat and chemicals causes it to become metallic and then it becomes energized and then the hole town burns down...what a disaster. Please pull it out now before too many people die needlessly...:rolleyes:


I do not see any prohibition to this situation in the NEC or the building codes...probably not in the directions for installation of the string itself either. Especially since this has probably been performed as such since the inclusion of nylon string in the electrical industry.

Lets discuss something much more important... prong up or down. ;)
 
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