ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
AreMetal Ladders Ever OK For Electrical Work?
by HotLine1. 01/22/18 07:31 PM
Photocell
by twh. 01/22/18 05:06 PM
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 19 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Definition of "grade level"? #207435
10/29/12 06:39 PM
10/29/12 06:39 PM
S
sparkync  Offline OP
Member
Joined: Oct 2002
Posts: 830
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 06:40 PM.
2017 / 2014 NEC & Related Books and Study Guides
Re: Definition of "grade level"? [Re: sparkync] #207442
10/29/12 08:53 PM
10/29/12 08:53 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,167
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
Re: Definition of "grade level"? [Re: sparkync] #207448
10/30/12 09:41 AM
10/30/12 09:41 AM
S
sparkync  Offline OP
Member
Joined: Oct 2002
Posts: 830
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.

Re: Definition of "grade level"? [Re: sparkync] #207450
10/30/12 12:13 PM
10/30/12 12:13 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,167
Estero,Fl,usa
I would want to err on the safe side.


Greg Fretwell

Featured:

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

 

Member Spotlight
Lostazhell
Lostazhell
Bakersfield, CA (Originally Orange Co.)
Posts: 1,431
Joined: February 2004
Show All Member Profiles 
Top Posters(30 Days)
Admin 21
sparky 15
Potseal 15
Popular Topics(Views)
243,596 Are you busy
180,399 Re: Forum
170,866 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.013s Queries: 15 (0.004s) Memory: 0.9584 MB (Peak: 1.0927 MB) Zlib enabled. Server Time: 2018-01-23 04:02:04 UTC