ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Happy Thanksgiving
by Trumpy - 12/02/20 04:11 AM
Where is Everyone?
by Trumpy - 12/02/20 03:51 AM
What does your work place look like?
by Trumpy - 12/02/20 03:42 AM
From an outsider- How does tipping work?
by gfretwell - 11/30/20 04:00 PM
Ground fault remover :-)
by dsk - 11/30/20 03:51 AM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
1 registered members (Trumpy), 14 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Proper Grounding #36272 04/02/04 06:32 PM
Joined: Jan 2004
Posts: 171
M
Merlin Offline OP
Member
I just finished hooking up my new service to my home. As I was grounding the service disconnect panel, I got wandering. Is there a good way to check for a good ground at the ground rod.

In the past installations I have done, I use the reccomended ground rod for the soil type and area. (example - 5/8" x 10' for sand) If in doubt, I always go bigger. But is there a way to check to see if that is sufficient. Thanks, Kevin

Work Gear for Electricians and the Trades
Re: Proper Grounding #36273 04/02/04 06:57 PM
Joined: May 2002
Posts: 1,716
R
Roger Offline
Member
There are numerous ways to check the ground rod resistance, this can be a fall of potential test which uses somewhat expensive testers, it can be a clamp type meter, you can actually apply voltage and use an amprobe. The truth is, the required 25 ohms at the ground rod doesn't mean much at our voltage levels, and unless you are shooting for some "performance" level of grounding, you are better off just driving two rods and then head to the house. [Linked Image]

Roger

Re: Proper Grounding #36274 04/03/04 04:28 AM
Joined: Aug 2001
Posts: 7,520
P
pauluk Offline
Member
The traditional method used here for decades is the fall-of-potential method mentioned by Roger.

There's a description of it, along with other useful notes here. .


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_Lightman
The_Lightman
Orlando, Fl, USA
Posts: 49
Joined: August 2001
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 19
Popular Topics(Views)
272,182 Are you busy
206,068 Re: Forum
194,077 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3