NolaTigaBait
Senior Member
- Location
- New Orleans,LA
stupid question, but, i've never had to use a concrete encased grounding electrode, so, what do you use to connect the gec to the rebar?....
ufer ground
- Thread starter NolaTigaBait
- Start date
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barbeer
Senior Member
- Location
- Pinellas County, FL
Why not a simple DB ground clamp attached to the rebar?
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
The acorn clamps we use are listed for burial in concrete. I believe most are listed db and for concrete.
I just did a 3 point test on my CEE and compared it to the ground rod at the temp. pole. The ground had 93 ohms while the CEE was 13 ohms. I hope I never drive another ground rod.
chris kennedy
Senior Member
- Location
- Miami Fla.
- Occupation
- 60 yr old tool twisting electrician
NolaTigaBait
Senior Member
- Location
- New Orleans,LA
so, i could use a simple ground rod clamp?....ok thanks
- Location
- Logan, Utah
As long as it is listed for use with re-bar. I know there are a couple of acorn style ground rod clamps that are listed for use with re-bar.
Chris
- Location
- Massachusetts
NolaTigaBait
Senior Member
- Location
- New Orleans,LA
ok thanks guys...i'll make sure i ask for one that listed for rebar at the supply house
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
An associate of mine bought a surplus tester 20 years ago for $20.00. It is an old WW II vintage crank style tester. Never used one before but instructions were quite simple. I am sure the accuracy may not be 100% but it appeared to see the difference. I had one rod at about 100 feet away, the next at 60 feet and then about 20 feet to the CEE.
I also tester another job and found with 2 ground rods I only had 88 ohms. I will make sure the contractors don't forget to let me know when they need to pour. The last job the GC forgot to call after I reminded him a few times. I told him the results of my tester and I think he may actually remember next time.
chris kennedy
Senior Member
- Location
- Miami Fla.
- Occupation
- 60 yr old tool twisting electrician
Very interesting Dennis, thank you.
Bob, do you have a link to the thread Bryan post that list on? I tried to save and print that, but it saves as a 'php' file???
- Location
- Massachusetts
NolaTigaBait
Senior Member
- Location
- New Orleans,LA
another question, does it matter that the ufer will not be encased in the foundation?....its a huge driveway under a fishing camp...
dezwitinc
Senior Member
- Location
- Delray Beach, FL
Word of Warning:
Check with your AHJ and find out if you need an inspection before they pour the footer. He may need to see the connection.
It is becoming more commonplace down here that this is a specific inspection.
Check with your AHJ and find out if you need an inspection before they pour the footer. He may need to see the connection.
It is becoming more commonplace down here that this is a specific inspection.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I would think a driveway would qualify but I am not sure as 250.52(A)(3) specifies footer or foundation. I would consider a slab a foundation so..... It would be interesting to know if it would be better than a rod--- I bet it would be.
- Location
- Logan, Utah
How thick is the driveway?
250.52(A)(3) requires that the re-bar be encased by at least 2" of concrete.
Chris
NolaTigaBait
Senior Member
- Location
- New Orleans,LA
its gonna be at least 6'' thick....i just didn't know if it was limited to the foundation of the house
Karl H
Senior Member
- Location
- San Diego,CA
Ground rods are being phased out one foundation at a time here in
San Diego. Almost, all new foundations are required to have a CEE
installed for future use. I haven't driven a ground rod(s) in 4 years.
I sure wont miss driving rods that's for sure.
San Diego. Almost, all new foundations are required to have a CEE
installed for future use. I haven't driven a ground rod(s) in 4 years.
I sure wont miss driving rods that's for sure.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Ground rods are being phased out one foundation at a time here in
San Diego. Almost, all new foundations are required to have a CEE
installed for future use. I haven't driven a ground rod(s) in 4 years.
I sure wont miss driving rods that's for sure.
Karl,
What do you mean by "future use"?
M. D.
Senior Member
I would guess additions to existing buildings that only require a feeder or branch circuits ??
AS far as the drive way ,.. one of the things that makes a CCE effective is moisture ,.. in this case rods could be more effective ..
I found this thought I would share it ,. it is a good little look at the Ufer
http://www.netaworld.org/files/ItemFileA1341.pdf
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