wire to shop to short

[old diesel]

need some help boys and girls. I have ran direct bury 4/0 4/0 4/0 2/0 alum wire to new shop and I'm about 10 feet short . I ran Wire in 2'' conduit into building about 4feet. Can I splice it with MH 4/0 wire [in conduit] and run it to my 200amp panel

 

[theoldwizard1]

You are going to need a LARGE junction box to hold those splices !

Make sure the splices you are using are Al compatible. Check out Polaris connectors or Greaves connector blocks. They also make special "grease" for Al splices that prevents corrosion.

 

[Slowgsr]

Crimp it with appropriate splices... Then use the proper heat shrink which is full of glue. Stagger your joints.. Continue pulling.

My dads run from the house to his shop is 800' in 4" pipe, there are over 30 splices in that run. The run was done with offcuts from hydro. It's all CU.

It's a very common practice to have splices in the run, well for utilities anyway. However I would never do it that way for a paying customer.

Have fun, we used 4/0 cu rw90. I'm not an aluminum kinda guy

 

[wyliesdiesels]

What kind of wire is the 4/0?

 

[Norcal]

Crimp it with appropriate splices... Then use the proper heat shrink which is full of glue. Stagger your joints.. Continue pulling.

My dads run from the house to his shop is 800' in 4" pipe, there are over 30 splices in that run. The run was done with offcuts from hydro. It's all CU.

It's a very common practice to have splices in the run, well for utilities anyway. However I would never do it that way for a paying customer.

Have fun, we used 4/0 cu rw90. I'm not an aluminum kinda guy

Crimping is out of the question for most here, as it requires specialized equipment, & the correct die / crimp connector combo. They only way for most here to do that would be to sub it out to a contractor with the tools. Crimping it would be the best though.

 

[jhelrey]

A very low panel....

 

[Pwrgeek]

Mount some Burndy BDA (or similar) blocks in a large junction box to make the splice. If it were me I'd splice to 4/0 Al THHN for the rest of the run to the panel.


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[old diesel]

Real funny....but....do u think I need to add a grounding strap to my creeper when a roll over to panel to turn on a breaker....lol

 

[ratdoggy]

Can you move the shop closer?
Sorry I just had to put that out there....

 

[old diesel]

Can you move the shop closer?
Sorry I just had to put that out there....

tried to move it last night....didn't work....but it does have a nice lean to the south...

 

[old diesel]

What kind of wire is the 4/0?

600v 4/0 quad ud

 

[justsam]

What size breaker are you planning to protect this run to your shop? Was the 4/0 used because of a very long run or because of the current?

If you are just adding 10 feet you might consider a smaller gauge, 10 foot pigtail in Cu, as it might be easier to work with. Proper connectors of course must be used and breaker would have to be sized per the weakest link.

 

[Charles (in GA)]

Put the disconnect out in the yard and bring the wire up to it, go to the shop with more wire.

I'm assuming UD is the same as URD and also assuming you are in the US. This wire cannot enter the building at any point, for any distance at all.

Charles

 

[pattenp]

Put the disconnect out in the yard and bring the wire up to it, go to the shop with more wire.

I'm assuming UD is the same as URD and also assuming you are in the US. This wire cannot enter the building at any point, for any distance at all.

Charles

Yep... If it's URD with only a USE-2 rating it needs to be terminated on the outside of the structure. The reason is the insulation is not fire resistant.

 

[old diesel]

What size breaker are you planning to protect this run to your shop? Was the 4/0 used because of a very long run or because of the current?

If you are just adding 10 feet you might consider a smaller gauge, 10 foot pigtail in Cu, as it might be easier to work with. Proper connectors of course must be used and breaker would have to be sized per the weakest link.

when we built house 6yrs ago we install meter panel in side yard, there is 200amp for house and 200amp for shop. Single meter head w/ 200amp breakers for each service. The shop we just built is 225 ft from panel. As long as I have 200amp available why not run with it. I was told by the Electrical supplier that I could run the "urd" wire to the 200amp panel inside shop{in conduit}..that is where this problem begins with wire being to short

 

[pattenp]

when we built house 6yrs ago we install meter panel in side yard, there is 200amp for house and 200amp for shop. Single meter head w/ 200amp breakers for each service. The shop we just built is 225 ft from panel. As long as I have 200amp available why not run with it. I was told by the Electrical supplier that I could run the "urd" wire to the 200amp panel inside shop{in conduit}..that is where this problem begins with wire being to short

Technically no if following the NEC. I've heard of inspectors letting it go for very short run to the panel inside. Less than a few feet. I've seen some wire listed as URD and have also the RHH/RHW or XHHW insulation listing which allows it to be inside. If you see just USE-2 stamped on the wire then it's a no for inside by NEC.

 

[wyliesdiesels]

when we built house 6yrs ago we install meter panel in side yard, there is 200amp for house and 200amp for shop. Single meter head w/ 200amp breakers for each service. The shop we just built is 225 ft from panel. As long as I have 200amp available why not run with it. I was told by the Electrical supplier that I could run the "urd" wire to the 200amp panel inside shop{in conduit}..that is where this problem begins with wire being to short

What do u plan on running in the shop?

One man shop?

 

[old diesel]

What do u plan on running in the shop?

One man shop?

You know what...after years and years of laying in dirt, rocks, snow and ice working on my semi and equipment, I think I"ll just get a lawn chair, a couple of beers and just sit in the middle of shop and take it all in..but to your question..one man show..plus my very very patient wife....a little fab work, welding, and redoing old semis...

 

[rvieceli]

redoing old semis...

Please, please, please tell me you've got a Mack B61 and a late 50's early 60's GMC cab over waiting to get this thing wired.

 

[walrus]

Any chance you can mount a JBox on a PT 6 by 6 above grade, reroute conduit into box and then come out again into shop panel. Won't look the best but...

Electricians motto, a mile to long is better than an inch too short

 

[Slowgsr]

A very low panel....

Ha!

I remember I actually measured short on some 800mcm single conductor aluminum teck - it was for a 600/347v service.

Luckily there was an available space at the closest end of the switchgear, so I just had to move the switch - which wasn't fun as it involved a shut down.

Needless to say, we had some extra cable after that. Won't make that mistake again.

I already put in my 0.02, good luck to the OP

 

[checkthisout]

***** when that happens. Did that with a 70' run from the far side of the shop to the panel. They enter the panel about 12"...needless to say I'm not spending two hours running new wires...there will just be some wire nuts in the panel.

My recommendation would be to have a electrician come out and splice the wire for you.

I doubt it would cost much more than tracking down and paying retail for the proper splice and heat shrink.

 

[Pwrgeek]

This is the part where I work where someone tells the new guy to go to the truck for a cable stretcher and the rest of us stand around laughing at him and trying to figure out where to mount the junction box.


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[old diesel]

Please, please, please tell me you've got a Mack B61 and a late 50's early 60's GMC cab over waiting to get this thing wired.

You are the man....just happen to have an old {bubble nose} sitting behind shop, but the first one will b an 85 limited edition w9 kw, all original short hood 60 inch flat top...WHEN...shop is finished

 

[old diesel]

***** when that happens. Did that with a 70' run from the far side of the shop to the panel. They enter the panel about 12"...needless to say I'm not spending two hours running new wires...there will just be some wire nuts in the panel.

My recommendation would be to have a electrician come out and splice the wire for you.

I doubt it would cost much more than tracking down and paying retail for the proper splice and heat shrink.

Finally got hold of electrician buddy of mine, who been out of town on a job, said he b out to help fix problem...but I threw dog under the bus..told him I had my dog holding one end of tape when I measured for wire..asked what end...DAH...end with the big numbers..he read it wrong.

 

[old diesel]

This is the part where I work where someone tells the new guy to go to the truck for a cable stretcher and the rest of us stand around laughing at him and trying to figure out where to mount the junction box.


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Cable stretcher???? how far can I "stretch" wire...don't want to go from 4/0 down to a 1/0 ....

 

[mobiledynamics]

That has got to **** OD....

A couple extra feet would have just cost you pennies compared to what a set of Polaris/etc connector will run ya !