We are pulling wire with a J box in middle of pull. The total length is around 350' with 600mcm. Is it ok to spice wire in j box? I wouldnt normally want to do the splice but its a 90 degree pull and pretty tough to pull enough wire out then re-feed other way. I figured we could pull wire from both directions and spice in J box.
splicing 600 mcm
- Thread starter mannyb
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mkgrady
Senior Member
- Location
- Massachusetts
Yes it is Ok. Based on how you worded the question you should not try to pull this in without a splice. It can be done but a lot can go wrong if you haven’t done something like this before.
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
Not practical to pull in both directions from the j-box with one continuous length of wire/cable?
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
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- Electrical Contractor
It's almost impossible to pull the last bit of wire that big in at the 90, and even harder to eliminate twisting.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
It can be done if the pull box is long enough but certainly not worth the effort when splicing will take one man an hour or two. The pull through scenario will take multiple workers spitting blood to get the wire in without a splice and in the end you may end up with a big twist in the conductors as Larry stated.
350' with one 90 might go in without a splice.
construct
Senior Member
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- Branson, Missouri
As long as it's at a simmer with the lid off :blink: Sorry..........couldn't resist.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Larry, seems like a pretty broad generalization to say that. Properly sized, I don't think it's that bad. Then there's always the strategy of leaving a loop in the box.....
oldsparky52
Senior Member
- Location
- Wilmington, NC USA
How many degrees of bends from the jb to the two end points?
Also, is your 90 in the jb from side to top/bottom or from the back of the box to a side or top/bottom?
Also, is your 90 in the jb from side to top/bottom or from the back of the box to a side or top/bottom?
PaulMmn
Senior Member
- Location
- Union, KY, USA
- Occupation
- EIT - Engineer in Training, Lafayette College
If the box is deep enough, couldn't you come in the side towards the front, do a dipsy-doodle and exit the adjacent side towards the back? Any twist would be relieved (somewhat) because you're not making a pure 90* turn. I think that requires being able to remove more panels than just the front! 
- Location
- Illinois
- Occupation
- retired electrician
Do the project specifications permit a splice? Many do not.
Fulthrotl
~Autocorrect is My Worst Enema.~
- Occupation
- E
simPull. no lube.
put a large diameter sheave in the box, and make
a support frame out of unistrut. position the wheel
so the top of it aims right at both conduits.
you didn't say aluminum or copper. aluminum is
easy peazy, copper is a lot heavier.
if you have to splice, hypress, and 3m cold shrink.
making it up is fast.
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