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Surface wiring across driveway #194479
06/04/10 07:08 PM
06/04/10 07:08 PM
W
wewire2  Offline OP
Member
Joined: Nov 2002
Posts: 244
California
I have a client that wants to park an RV on the other side
of a Storage facility driveway. He wants the 50 amp RV circuit to run surface across the driveway from the building with available power and he wants to use a cable ramp. Never been asked this one before and he wants the price right away. I'm wondering if a UL listed ramp is available to protect rigid conduit. RV's will be driving over it frequently.Anyone familiar with an approved ramp or have any suggestions besides going underground or overhead?

2017 / 2014 NEC & Related Books and Study Guides
Re: Surface wiring across driveway [Re: wewire2] #194482
06/04/10 07:28 PM
06/04/10 07:28 PM
T
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
IMC is better than RMC...

Such protection is pretty effective for temp power at construction sites.

In such usage our idea of a cable ramp is 2x6 lumber....

Grainger might have something suitable.


Tesla
Re: Surface wiring across driveway [Re: Tesla] #194484
06/04/10 10:58 PM
06/04/10 10:58 PM
K
KJay  Offline
Member
Joined: Nov 2007
Posts: 763
MA, USA
The company in the link below makes a protector ramp suitable for that purpose, but I don't think it would be required to be UL listed, since it is not an actual fitting or part of the RMC wiring method.
I wasn't able to locate anything in the White Book pertaining to protector ramps.

Handiramp

Re: Surface wiring across driveway [Re: Tesla] #194488
06/05/10 01:14 AM
06/05/10 01:14 AM
W
wewire2  Offline OP
Member
Joined: Nov 2002
Posts: 244
California
Haha! Yeah I'm familiar with the 2x4 method. Heck I've seen
cords running across heavily traveled roads without
protection. Thanks for the responses. I think I'm going to
propose just installing an outlet and let him worry about protecting it across the road. Less liability to worry about.

Re: Surface wiring across driveway [Re: wewire2] #194494
06/05/10 09:58 AM
06/05/10 09:58 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,916
Brick, NJ USA
Last I looked, Grainger had ramps made by Hubbell for cord protection, & suitable for traffic crossing. Hold your wallet....they were in the $400 range I think.



John
Re: Surface wiring across driveway [Re: HotLine1] #194500
06/05/10 05:42 PM
06/05/10 05:42 PM
W
wewire2  Offline OP
Member
Joined: Nov 2002
Posts: 244
California
Looking at NEC 400.7 and 400.8 and wondering whether a
cord laid out for a weekend or two a month across the drive and protected by a ramp would sneak in under the provisions listed. An RV is portable right? Opinions?

Re: Surface wiring across driveway [Re: wewire2] #194515
06/06/10 12:37 PM
06/06/10 12:37 PM
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
I don't see a problem ... nor do I see a problem with any means used to help protect the cord.

Indeed, some time back I posted pics of such a cord thaqt was run through a garden hose. In that instance, the cord went across a parking lot for a 'sale' event.

The world generally has no problems with honest applications; it's when that RV sits in place for a decade and is rented out as an apartment that code officials start getting grumpy.


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