ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Where is Everyone?
by gfretwell - 11/27/20 06:18 PM
Happy Thanksgiving
by gfretwell - 11/26/20 08:52 PM
Insulated Tools: A Waste of Money?
by HotLine1 - 11/26/20 12:28 PM
Ground fault remover :-)
by NORCAL - 11/26/20 08:13 AM
Work Gloves?
by sabrown - 11/25/20 01:54 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 17 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Ground Rod #89742 10/17/04 11:45 AM
Joined: Jan 2004
Posts: 1,507
G
George Little Offline OP
Member
What are the required dimensions for a galvanized steel rod if it is to be used as a gounding electrode? Trick question.


George Little
2017 / 2014 NEC & Related Books and Study Guides
Re: Ground Rod #89743 10/17/04 11:50 AM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
I will take a swing at this.

5/8" x 8' minimum.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Ground Rod #89744 10/17/04 11:55 AM
Joined: Jul 2004
Posts: 9,543
G
gfretwell Offline
Member
Ah the new Galvan Electric rod huh?

If U/L is OK with it I am OK with it ... until someone tells me otherwise.


Greg Fretwell
Re: Ground Rod #89745 10/17/04 12:13 PM
Joined: Aug 2003
Posts: 1,374
R
Ryan_J Offline
Moderator
I agree with Bob.


Ryan Jackson,
Salt Lake City
Re: Ground Rod #89746 10/17/04 12:13 PM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
Wouldn't we have to wait for 250.52(A)(5)(b) to get changed?

Quote
250.52(A)(5)(b)Electrodes of rods of iron or steel shall be at least 15.87 mm (5/8 in.) in diameter. Stainless steel rods less than 16 mm (5/8 in.) in diameter, nonferrous rods, or their equivalent shall be listed and shall not be less than 13 mm (1/2 in.) in diameter.

In my mind a galvanized steel rod is not equivalent to Stainless steel or nonferrous rods.

Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Ground Rod #89747 10/17/04 12:29 PM
Joined: Jan 2004
Posts: 1,507
G
George Little Offline OP
Member
Boy, you guys are right on top of your game. Yes it is all about the Galvan Electric rod. 250.25(A)(5)(b) is kinda poorly written (surprise, surprise) and hopefully it will get re-written someday. In talking with NEMA rep. they use the word "nominal" meaning something in name only when talking about a 5/8 ground rod. Actual dimensions are considerably less than 5/8". The Galvan rod is also less than 5/8" but it has the blessing of UL and I am not sure but maybe we should lean towards using this listed product rather than using and approving the "nominal" 5/8" rod.


George Little
Re: Ground Rod #89748 10/17/04 01:16 PM
Joined: May 2003
Posts: 2,876
E
e57 Offline
Member
I remember the last time this rod was talked about, and the site like had a whole "justification" page about thier listing, and sizing.
http://www.galvanizersonline.com/electrical/faq.asp

George, do you have stock in this company? [Linked Image] I don't get the reason why this would be better than a "regular rod"?


Mark Heller
"Well - I oughta....." -Jackie Gleason
Re: Ground Rod #89749 10/17/04 01:26 PM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
From their site.

Quote
What does the NEC Code say about ground rod electrode diameters?

Diameters must be 0.625 inches minimum and the rod length must be 96 inches (8 feet) minimum. Any rod less than 0.625 inches DOES NOT meet the NEC Code, unless it is “listed.” Galvan has achieved this compliance!

What I don't understand is the compliance with "equivalent to Stainless steel or nonferrous rods."

Who decided a galvanized rod is equivalent and if it is what type of rod would not be equivalent?


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Ground Rod #89750 10/17/04 01:34 PM
Joined: Apr 2004
Posts: 201
CharlieE Offline
Member
This reminds me of the question, "What is the inside diameter of 1/2" conduit?" [Linked Image]

- - - - - - - - - - - - - - - - - - - - - - - - - - -
Charlie Eldridge, Indianapolis, Utility Power Guy


Charlie Eldridge, Indianapolis Utility Power Guy
Re: Ground Rod #89751 10/17/04 02:36 PM
Joined: Jan 2004
Posts: 1,507
G
George Little Offline OP
Member
To answer e57, I don't have stock in Galvan, wish I did. This question came up at one of our local inspector forums and got us all talking. I have invited the rep for Galvan to our IAEI Annual Michigan Chapter meeting in December and gave him a 15 minute part on the program to clear up the matter. Somehow I doubt 15 minutes will get it.


George Little
Page 1 of 2 1 2

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
The Watt Doctor
The Watt Doctor
Mont Belvieu, TX
Posts: 437
Joined: December 2001
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 9
Popular Topics(Views)
272,050 Are you busy
205,944 Re: Forum
193,996 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3