Temporary Trailer hook up

[arnettda]

I have a construction trailer to supply temporary power to. What does one usually do? I was looking at using 6/4 SOW cord to supply the trailer from the temp service 30 feet away. The ground is still froze so I can not dig anything in. The thing that scares me is having the wire lay ontop of the ground. It is somewhere people might walk over it. I am worried about someone getting hurt. And do I need to use SOW cord could i use U/F since it is a temp situation.
Thanks

 

[charlietuna]

Temporary connections kill people everyday--make it safe --thats what they are paying you for.

 

[Rewire]

Run Rigid conduit it doesn't need to be buried and will withstand foot traffic

 

[iwire]

If I could not go under and I could not go overhead I would likely run SER sleeved in schedule 80 PVC, this of course assumes only foot traffic no vehicles.

 

[zbang]

Or put up a messenger and fly it or cover it with YellowJackets (http://www.yjams.com/).

 

[kbsparky]

What's wrong with SOW cord? That stuff is heavy-duty rated, and perfect for such an application.

Easily moved around during construction, etc.

Put in a NEMA 14-50 receptacle outlet, and plug it in, just like the old trailer parks used to have!

 

[zbang]

SOW is nice (and $$) stuff, but it's still impolite to run over it with the fork lift.

 

[Alwayslearningelec]

What is the difference between SO & SOW?

 

[augie47]

What is the difference between SO & SOW?

the "W"
which in your case is actually important--damp & wet locations

 

[iwire]

What's wrong with SOW cord? That stuff is heavy-duty rated, and perfect for such an application.

Easily moved around during construction, etc.

Put in a NEMA 14-50 receptacle outlet, and plug it in, just like the old trailer parks used to have!

Nothing is wrong with it as long as you enjoy spending lots of money. That 14-50 will add to the cos as well.

 

[augie47]

This is definitely a case where I'd check with the AHJ. Way too many variables, distance, amount of traffic, time in use, etc.
I;ve seen jobs where job trailers were required to be 100% NEC..buried conduit, etc, and jobs with "sleeved" cords, sleeved SE, etc., exposed rigid..the whole, gambit.
Oh, and "frozen ground" normally doesn't mean mcuh to inspectors, we don't dig.

 

[GUNNING]

Frozen ground, don't get much of that here! It's a choice!

A trencher won't cut frozen ground?

 

[Rewire]

Frozen ground, don't get much of that here! It's a choice!

A trencher won't cut frozen ground?

atrencher will just bounce on hard frozen ground need a backhoe

 

[GUNNING]

a big hoe or a little hoe?

 

[scwirenut]

I always use 100amp Mobile home feeder 4-4-2-6 in Sch 80 PVC on top of the ground cost about .90/ft (not counting conduit)

 

[luckyshadow]

In my neck of the woods SER is not allowed for this installation.

Article 550.4 (A) - Lists contractors onsite offices , and tells you that you must meet all requirements of the article
550.16 (B) supply cord OR Permanent Feeder - calls for an insulated grounding wire.

Going the distance you mention it can not be just laid on the ground either. It must be protected to keep it from being damaged thus protecting the people on the job site.