ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#34786 - 02/23/04 11:56 AM Ground rod test
SJT Offline
Member
Registered: 07/24/02
Posts: 241
Loc: PATCHOGUE, N.Y.
Is anyone familiar with the testing method to check that 25 ohms or less are at the ground rods. Here on L.I., we have a single ground rod as a supplement to the main water pipe. Has anyone used a clamp on style meter to check grounds? Are the 3,4 type terminal testers better?
Thanks
Top
Work Gear for Electricians and the Trades
#34787 - 02/23/04 01:02 PM Re: Ground rod test
Jim Phillips Offline
Junior Member
Registered: 02/22/04
Posts: 2
Loc: Canton, Ohio U.S.A.
I have used the clamp on with pretty good success. You have to clamp on at the last ground to the ground rod. The meter I use is made by AMEC and it will read 0.7 ohms if you have not connected on the last lead. The 3, 4 terminal testers are good but if you are just seeing if you are below 25 ohms, the clamp on is easier.

Jim
Top
#34788 - 02/23/04 06:57 PM Re: Ground rod test
Bjarney Offline
Moderator
Registered: 04/10/02
Posts: 2527
Loc: West-Southern Inner-Northeast ...
Top
#34789 - 02/25/04 12:03 PM Re: Ground rod test
SJT Offline
Member
Registered: 07/24/02
Posts: 241
Loc: PATCHOGUE, N.Y.
Thank you for the pages on the Ground Test. It's an area that I would like to be more educated about. I appreciate both inputs.
Top

Member Spotlight
Member Since: 07/05/02
Posts: 8211
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 124 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 49
HotLine1 43
gfretwell 18
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals