ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
Question on power to 4 Nema 6-50 & 5 Nema 5-15.
by TrickedoutTech. 10/22/17 11:36 PM
VFD MotorFeeders
by Yoopersup. 10/22/17 07:52 PM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,460 Are you busy
177,455 Re: Forum
169,027 Need opinion
Who's Online Now
1 registered members (gfretwell), 44 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#207435 - 10/29/12 07:39 PM Definition of "grade level"?  
sparkync  Offline
Member
Joined: Oct 2002
Posts: 828
NC
In 210.8(A)2 it talks about accessory buildings at "grade level" need GFCI protection. Does this mean at "dirt" level? Does it mean if it is on a slab? How about if it is on concrete blocks and a foot above ground? The way it talks is that if it is above the dirt, no matter how much, it don't have to have GFCI protection. I think that might could be a good thing to clarify in the next code myself.
thanks, Steve..

Last edited by sparkync; 10/29/12 07:40 PM.

2017 / 2014 NEC & Related Books and Study Guides

#207442 - 10/29/12 09:53 PM Re: Definition of "grade level"? [Re: sparkync]  
gfretwell  Online Content


Member
Joined: Jul 2004
Posts: 9,124
Estero,Fl,usa
I think if the building is up on a stem wall or on blocks with a crawl, it is not at grade. A slab is grade.

I imagine they are thinking an elevated building would have a wood floor.

Around here you see buildings on a stem wall where they fill the box with dirt and pour a slab. I think I would try to say that was grade level, looking at the intent but I doubt I could survive a challenge.


Greg Fretwell

#207448 - 10/30/12 10:41 AM Re: Definition of "grade level"? [Re: sparkync]  
sparkync  Offline
Member
Joined: Oct 2002
Posts: 828
NC
Greg, how about a slab with plywood nailed to it? That's what one of the buildings I'm about to wire has. The slab is about 6" or 8" thick. I'll probably just go ahead with a GFI but it's interesting to know. Thanks.


#207450 - 10/30/12 01:13 PM Re: Definition of "grade level"? [Re: sparkync]  
gfretwell  Online Content


Member
Joined: Jul 2004
Posts: 9,124
Estero,Fl,usa
I would want to err on the safe side.


Greg Fretwell


Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,262
Joined: December 2000
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.013s Queries: 15 (0.003s) Memory: 0.7604 MB (Peak: 0.8939 MB) Zlib enabled. Server Time: 2017-10-23 17:18:56 UTC