The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#5282 - 11/13/01 08:46 AM 20 ft Ground Rod
JOAN Offline
Member
Registered: 11/13/01
Posts: 10
Loc: Jersey City, New Jersey
Prints I'm looking at call for driving 20 ft ground rod. I'm not sure of the composition of the ground. Anyone have a good (fast, cheap, easy?) way to run same.
Top
Work Gear for Electricians and the Trades
#5283 - 11/13/01 12:46 PM Re: 20 ft Ground Rod
sparky Offline
Member
Registered: 10/18/00
Posts: 5545
Joan, why not try a UFER?
http://www.scott-inc.com/html/ufer.htm
Top
#5284 - 11/13/01 02:07 PM Re: 20 ft Ground Rod
NJwirenut Offline
Member
Registered: 09/15/01
Posts: 816
Loc: Bergen County, NJ
How about 2 10 foot rods?



Or you could lay the 20 foot rod horizontally in a ditch before backfilling.
Top
#5285 - 11/13/01 02:20 PM Re: 20 ft Ground Rod
George Corron Offline
Member
Registered: 05/16/01
Posts: 728
Loc: Lorton, Va USA
Joan,
The ground ring around the Pentagon requires ground rods 1" X 20' every 15 feet, most contractors use an air compressor and jack hammer for the task. BTW, did I tell you guys one of the reasons I've been scarce around here is the move from Dulles to the
Pentagon ? Surprise !!!!!!!
Top
#5286 - 11/13/01 02:56 PM Re: 20 ft Ground Rod
sparky Offline
Member
Registered: 10/18/00
Posts: 5545
George,
good grief! that would take a while...
Top
#5287 - 11/13/01 06:13 PM Re: 20 ft Ground Rod
resqcapt19 Offline
Member
Registered: 11/10/00
Posts: 2209
Loc: IL
Joan,
I just had to install some 10" rods in an area with rock at 3'. I had a soil testing company drill 4" holes 11' deep and installed the rods with sand mix concrete as back fill. The drilling cost about $400 per rod.
Don(resqcapt19)
_________________________
Don(resqcapt19)
Top
#5288 - 11/13/01 07:52 PM Re: 20 ft Ground Rod
George Corron Offline
Member
Registered: 05/16/01
Posts: 728
Loc: Lorton, Va USA
Sparky,
It takes a bit, but the old building was poorly grounded when built (1941-43) and patched here and there since. This is the first major remodel and lotsa things that were taken for granted years ago will not be overlooked this time. Course, uh.... we also have to fill the hole.
Top
#5289 - 11/13/01 07:57 PM Re: 20 ft Ground Rod
Nick Offline
Member
Registered: 08/13/01
Posts: 603
Loc: Riverside, CA
Are 20' ground rods readily available or do you have to Cadweld two 10'?
Top
#5290 - 11/13/01 08:12 PM Re: 20 ft Ground Rod
nesparky Offline
Member
Registered: 06/21/01
Posts: 650
Loc: omaha,ne
You can use sectional ground rods to get just about any length. You will need something heavy to drive them-air comressor and jack hammer- depending on the local earth at the job site. Most supply houses will be able to order them for you
Good luck
_________________________
ed
Top
#5291 - 11/14/01 05:03 AM Re: 20 ft Ground Rod
electure Offline


Member
Registered: 12/24/00
Posts: 4229
Loc: Fullerton, CA USA
There's one I had to drive to 140' for a company that produced equipment for MaBell in the '70s. Using 10' sectional rods and a 60# jackhammer, it took all of 2 days in fairly easy dirt.
Top
Page 1 of 2 1 2 >

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
Members: Non-Members: Did you know?
by Admin
01/22/17 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM
International Wire Colour Codes
by Texas_Ranger
01/21/17 03:29 PM
Looking for older post
by Texas_Ranger
01/21/17 03:22 PM
Last time to chat here
by Trumpy
01/20/17 11:41 PM

Who's Online
3 registered (Admin, Texas_Ranger, HotLine1), 91 Guests and 14 Spiders online.
Key: Admin, Global Mod, Mod
New in the Gallery:
Desk-mounted "power-board"
Top Posters
gfretwell 9066
Trumpy 8560
pauluk 7693
HotLine1 6833
sparky 5545
Member Spotlight
Member Since: 02/21/04
Posts: 1248

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