Ufer Ground to Electrical Service - Electrician Talk - Professional Electrical Contractors Forum

partimer31 · 08-14-2009, 08:02 PM

I would like to heard from follow Electricians, there best method of install-
ing a Ufer Ground system. Here not all electrician install it the same way.

Please note I am talking about single family home here.

Thanks for any and all comments.

InPhase277 · 08-14-2009, 08:09 PM

Quote:

Originally Posted by partimer31

I would like to heard from follow Electricians, there best method of install-
ing a Ufer Ground system. Here not all electrician install it the same way.

Please note I am talking about single family home here.

Thanks for any and all comments.

I like to have a piece of the rebar turned up in a convenient spot so I can run my ground to it. Keeps me from having to mes around in the slab.

brian john · 08-14-2009, 09:07 PM

Quote:

Originally Posted by InPhase277

I like to have a piece of the rebar turned up in a convenient spot so I can run my ground to it. Keeps me from having to mes around in the slab.

Excellent way to do it.

I'd love to invent some method of drilling a slab and making a connection..

Kevin J · 08-14-2009, 09:09 PM

Quote:

Originally Posted by InPhase277

I like to have a piece of the rebar turned up in a convenient spot so I can run my ground to it. Keeps me from having to mes around in the slab.

I like to do the same thing, except I substitute the rebar with a ground rod. I worry about the rebar corroding over time.

nolabama · 08-14-2009, 09:18 PM

i would want it ramset style- instead of drilling

partimer31 · 08-15-2009, 01:50 PM

brain John. "I void warranty's" love it, made me laugh, you must be a comic at heart.

MDShunk · 08-15-2009, 02:37 PM

Quote:

Originally Posted by nolabama

i would want it ramset style- instead of drilling

I think there is an AMPact die to put a tap on a rebar with the shot shell.

rackman · 08-17-2009, 01:11 PM

out here in beautiful california in a new or remodel situation where we have concrete work going in we have the rebar guys put a 20 foot minimum #4 rebar turned up in a good place near out panel or sub panel for attachement of an apporopriate ground wire tap/acorn

phillip in sd
San Diego Electrician
Electrician In San Diego
San Diego Electrical Contractor
619-417-7183
www.thesandiegoelectrician.com

partimer31 · 08-17-2009, 02:49 PM

Follow electrician, here something you might want to read if you do work
in the State of New Hampshire.

They have put out a Technical Bulletin on Concrete-Encased Electrode,
it dated; Septemer 9, 2005.

I Google onto by typing in: STATE OF NEW HAMSHIRE DEPARTMENT OF
SAFETY, Application of 250.50, Grounding, Electrode System..

I don't work in New Hamshipre so I am wonder if this Tech. Bulletin
still is applicable.

Speedy Petey · 08-17-2009, 03:31 PM

Quote:

Originally Posted by Kevin J

I like to do the same thing, except I substitute the rebar with a ground rod. I worry about the rebar corroding over time.

A ground rod is not nearly adequate to serve as a CCE.

(3) Concrete-Encased Electrode. An electrode encased by at least 50 mm (2 in.) of concrete, located horizontally near the bottom or vertically, and within that portion of a concrete foundation or footing that is in direct contact with the earth, consisting of at least 6.0 m (20 ft) of one or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than 13 mm (1/2 in.) in diameter, or consisting of at least 6.0 m (20 ft) of bare copper conductor not smaller than 4 AWG. Reinforcing bars shall be permitted to be bonded together by the usual steel tie wires or other effective means. Where multiple concrete-encased electrodes are present at a building or structure, it shall be permissible to bond only one into the grounding electrode system.

480sparky · 08-17-2009, 03:51 PM

Quote:

Originally Posted by Speedy Petey

A ground rod is not nearly adequate to serve as a CCE. ...........

CEE.

Toronto Sparky · 08-17-2009, 03:58 PM

Quote:

Originally Posted by Kevin J

I like to do the same thing, except I substitute the rebar with a ground rod. I worry about the rebar corroding over time.

Cadweld rarely corrodes

greenthumb25 · 10-08-2009, 04:31 PM

Installing ground rods is not difficult but proper procedures must be followed and the resulting rod(s) should be checked for performance. Testing for resistance by the fall of potential method is the only way to be sure what looks good is good, a low resistance ground.

________________________
electrical services california

RIVETER · 10-08-2009, 09:08 PM

I have been around a long time. I have never seen the acronym "UFER". What is that? It might be legit, bit I"ve been out of construction a long time.
RIVETER

Mr. Sparkle · 10-08-2009, 09:15 PM

Click HERE.

Yeeesssssss, finally got to use it! Hooray!

Kevin J · 10-08-2009, 09:24 PM

[quote=Speedy Petey;110175]A ground rod is not nearly adequate to serve as a CCE.

(3) Concrete-Encased Electrode. An electrode encased by at least 50 mm (2 in.) of concrete, located horizontally near the bottom or vertically, and within that portion of a concrete foundation or footing that is in direct contact with the earth, consisting of at least 6.0 m (20 ft) of one or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than 13 mm (1/2 in.) in diameter, or consisting of at least 6.0 m (20 ft) of bare copper conductor not smaller than 4 AWG. Reinforcing bars shall be permitted to be bonded together by the usual steel tie wires or other effective means. Where multiple concrete-encased electrodes are present at a building or structure, it shall be permissible to bond only one into the grounding electrode system.

Sure it is. Sorry so late in responding, but I just saw this. Your definition tells why it's o.k.

RIVETER · 10-08-2009, 09:32 PM

Where does the code say that only one electrode system must be bonded to the electrical system?

RIVETER

Speedy Petey · 10-08-2009, 09:57 PM

Quote:

Originally Posted by Kevin J

(3) Concrete-Encased Electrode. An electrode encased by at least 50 mm (2 in.) of concrete, located horizontally near the bottom or vertically, and within that portion of a concrete foundation or footing that is in direct contact with the earth, consisting of at least 6.0 m (20 ft) of one or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than 13 mm (1/2 in.) in diameter, or consisting of at least 6.0 m (20 ft) of bare copper conductor not smaller than 4 AWG. Reinforcing bars shall be permitted to be bonded together by the usual steel tie wires or other effective means. Where multiple concrete-encased electrodes are present at a building or structure, it shall be permissible to bond only one into the grounding electrode system.

Sure it is. Sorry so late in responding, but I just saw this. Your definition tells why it's o.k.

Well sure, if the ground rod is 20' long then yes, it can serve as a CEE.

What I meant was one ground rod would NOT qualify as a CEE.

Speedy Petey · 10-08-2009, 09:58 PM

Quote:

Originally Posted by RIVETER

Where does the code say that only one electrode system must be bonded to the electrical system?

I personally don't understand the question.

Speedy Petey · 10-08-2009, 09:59 PM

Quote:

Originally Posted by greenthumb25

Installing ground rods is not difficult but proper procedures must be followed and the resulting rod(s) should be checked for performance. Testing for resistance by the fall of potential method is the only way to be sure what looks good is good, a low resistance ground.

Or you can just sink a second rod and not worry about testing.