Non-permanent shop

[76nemo]

I have a friend who has a mobile home camp on the river with a 100A service. In his panel, there is a recep for a 50A plug as you would see at a park.

My question is this. He built a big shed/shop 16'X24'. This won't stay put long as he built it in two pieces and can get dragged out by his truck at anytime, (and plans to soon).

There is a 50A straight plug in at his service on it's own circuit. He doesn't need 50A to his shed only 60' feet away. He wants it as temporary as possible.

By code, I need the proper direction. The shed is on skids/very mobile.

I thought as temporary as it may be, I should be able to get away from a clothesline or burial. Can I change the 50A straight to a 30A twistlock, (30A breaker), with SO and feed a genny panel with a 30A twistlock GFCI protected line?

Can I get away from a sub-panel if it is a plug in place feed??? There is no need to seperate the N-G bond here that I can see.

Call me ignorant, but please accept my question.

 

[Dennis Alwon]

So, are you planning to lay 60 feet of SO cable on the ground to feed the shed? I don't think that would meet code and I would think you would need 4 wires if this building even falls under the NEC???? I guess it does.

This will get you bumped up if no help otherwise.

 

[Jim W in Tampa]

Just how long are we talking about it being there ? What exactly is he running in it.NEC does not call anything temporary.This place sounds like a remote location that wont likely be seen by inspectors.When he moves them what will there needs be?As for now i would call it a building and wire it for min needs now.

 

[amptech]

I would read article 590 very carefully and see how this temp shed applies. The NEC has plenty to say about "temporary installations" but there are time constraints and conditions to be met.

 

[jrannis]

I would wire it in a way that if he wanted to bring the "shed" back next year he could. That would mean not using cord, at least not the whole way, maybe from the shed to a nice properly installed 4 wire 30 amp twistlock outlet mounted on a post.

 

[iwire]

I typed a nice long reply and lost it.

See 590.3 to see if Article 590 applies

If it does

590.4(B) rubber cord feeders.

590.4(C) rubber cord branch circuits.

590.2 Follow the other parts of the code

250.32(A) Provide grounding electrode system

2005 NEC and before 250.32(B)(2) could allow using the same conductor as the the grounded and grounding conductor.

2008 NEC No more 250.32(B)(2)

I would not GFCI protect the feeder or the branch circuit wiring. I would provide GFCI receptacles at the point of use.

I don't know what you mean by a genny panel.

If you bond the panel or not depends on if you use 250.32(B) or not.

 

[hillbilly]

I would wire it in a way that if he wanted to bring the "shed" back next year he could. That would mean not using cord, at least not the whole way, maybe from the shed to a nice properly installed 4 wire 30 amp twistlock outlet mounted on a post.

Sounds like a nice solution.

steve

 

[LarryFine]

I typed a nice long reply and lost it.

I've done that, too. It's so aggravating! I hate it when that happens. :roll:

You'll never go through the same thought process and include everything you said the first time, nor do you feel like putting that much time and effort into it again.

 

[acrwc10]

I've done that, too. It's so aggravating! I hate it when that happens. :roll:

You'll never go through the same thought process and include everything you said the first time, nor do you feel like putting that much time and effort into it again.

Maybe just age, are you sure you type the response in ? :grin: