Alwayslearningelec
Senior Member
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- NJ
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W
When is splicing needed a a runs with the same number and size conductors. I know when circuits are combined etc. But if you has 3 #6's and 1 #10 that ran about 300' with a few 90's would splicing be required or just ther pull boxes? I don't see why you would have to splice unless your wire was short. Thanks.
As stated earlier it may be easier to splice than to make one continuous pull but it's not required. The only thing that will normally prevent the contractor from making such splices is if it's stated in the job specs that the home runs are to be continuous (unspliced ).
I have had to do pulls that were close to a 1000 ft and ran through several pull boxes without splices because that is what the design engineer speced for the job. I'm sure the extra labor cost was calculated into the job cost.
You are allowed 360 degrees of bend in conduit before a pull box is required but not a splice. For industrial work splices are kept more to a minimum than say for commercial or residential.
Sometimes spicing is easier than trying to pull in a long run in one piece especially if there a lot of bends and pull points in the run.
Thanks VERY much...great info. Why the extra labor cost into the job. Are longer runs harder to pull? At what footage does it start to become difficult? So the NECA units need ot be adjusted accordingly.
Why? Is that because you would be pulling a shorter run. So I guess you would pull a 200-300 feet to a box then continue woth the 2nd half of the run??? I imagine you would splce after the runs are pulled as it would defeat the purpose and reason for the splice. THanks.
Because if you don't splice you either need to make it in one continuous pull or you need to pull the conductors out and then feed them back in. It also depends on the size of the conductors.
For example if you have a 400' run with 8-90? bends and a junction box in the middle. I'm pulling 4-500 kcmil conductors, now I can try to make it through in one pull, not likely or I can pull to the center point, pull 200' of 4-500 kcmil conductors out onto the floor and then try to feed them back into the conduit the other way.
If I put my reel of cable at the pull box I pull 200' in one direction, cut it and pull 200' in the other direction. Then I splice them together. Sometimes pulling a load of conductors out and feeding them back in isn't worth saving a splice.
What wire size would you consider the maximum you would want to pull out and loop back before you just plan on splicing?
When is splicing needed a a runs with the same number and size conductors. I know when circuits are combined etc. But if you has 3 #6's and 1 #10 that ran about 300' with a few 90's would splicing be required or just ther pull boxes? I don't see why you would have to splice unless your wire was short. Thanks.
Sometimes spicing is easier than trying to pull in a long run in one piece especially if there a lot of bends and pull points in the run.
Why? Is that because you would be pulling a shorter run. So I guess you would pull a 200-300 feet to a box then continue woth the 2nd half of the run??? I imagine you would splce after the runs are pulled as it would defeat the purpose and reason for the splice. THanks.
That single "W" in the first post messed this whole thread up!:lol:
That single "W" in the first post messed this whole thread up!:lol:
Because if you don't splice you either need to make it in one continuous pull or you need to pull the conductors out and then feed them back in. It also depends on the size of the conductors.
For example if you have a 400' run with 8-90? bends and a junction box in the middle. I'm pulling 4-500 kcmil conductors, now I can try to make it through in one pull, not likely or I can pull to the center point, pull 200' of 4-500 kcmil conductors out onto the floor and then try to feed them back into the conduit the other way.
If I put my reel of cable at the pull box I pull 200' in one direction, cut it and pull 200' in the other direction. Then I splice them together. Sometimes pulling a load of conductors out and feeding them back in isn't worth saving a splice.
Yes at your pull box, you would pull out enough wire to reach the end. Make
sure that you don't get any kinks or knots in wire that is on the floor. Sweep
the area where wire will lay. Walk backwards towars your wire spools (half the
distance to destination). Try to keep wires straight. You don't want a bird's
nest!! Then feed back into your pull box.