ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Lock-down Thread
by LongRunner - 07/02/20 05:56 AM
"Electric furnaces" and other odd American heaters
by LongRunner - 07/02/20 03:15 AM
Questioning the electrical norms
by Texas_Ranger - 07/01/20 08:14 AM
What would be the ideal solution?
by gfretwell - 06/30/20 02:39 PM
33 Apartments meter stack design.
by gfretwell - 06/25/20 01:08 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 18 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 4 of 4 1 2 3 4
Re: sub panel detached building #97436 03/08/06 06:17 PM
Joined: Sep 2005
Posts: 106
J
jw electric Offline
Member
I would like to put a little debate back in this thread if I might.

We are told in 250.32(A) Where there is no existing grounding electrode, the grounding electrode(s) required in 250.50 shall be installed.

Now let’s look at 250.50.
250.50 Grounding Electrode System.
All grounding electrodes as described in 250.52(A)(1) through (A)(6) that are present at each building or structure served shall be bonded together to form the grounding electrode system. Where none of these grounding electrodes exist, one or more of the grounding electrodes specified in 250.52(A)(4) through (A)(7) shall be installed and used.

Here we are told to bond any electrode found in 250.52 together and if none are present to install one that is outlined in (A)(4) through (7).

After reading both of the sections as referenced to from 250.32 I can not find anywhere that it says to keep going to 250.53 nor 250.56. With out being referenced to go there I ONLY need to fulfill what is mandated by 250.32(A).

So when gfretwell Made the statement to bury 10 foot of pipe and call it an electrode he was not to far from wrong. If the last 10 foot of water line was metal pipe then he would be right simply due to the fact that 250.32(A) only refers to 250.50 and neither 250.32, 250.50 nor 250.52 refers to any other section.

A proposal has been submitted to have the reference in 250.32 changed from 250.50 to part III of 250 for the 2008 cycle.


Mike
2017 / 2014 NEC & Related Books and Study Guides
Re: sub panel detached building #97437 03/18/06 11:16 AM
Joined: Jul 2005
Posts: 56
P
Paul O'Connell Offline
Member
I agree George. THE rod at the second building or structure is Supplementary to the ECG and not Supplemental to the grounding electrode.

Page 4 of 4 1 2 3 4

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

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

 

Member Spotlight
MarkC10
MarkC10
CA, Inland Empire
Posts: 43
Joined: September 2013
Show All Member Profiles 
Top Posters(30 Days)
Admin 7
Popular Topics(Views)
266,996 Are you busy
201,818 Re: Forum
190,417 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3