On a recent job I saw an Electrical Sub Contractor attach a bare copper wire with (2) clamps directly to the lowest piece of rebar in the foundation. It was just what the inspector required. However, more recently on another job I saw some rebar extended above the concrete in order for the ground wire to be attached. Hmm. it didn’t seem right to me but I may be wrong. Is there more than one way to ground using rebar? Which is the preferred method?
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
Listeners write in about ambitious projects and sinking patios before asking questions about old house specialists, attic headroom, and home shops.
Highlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Fine Homebuilding Magazine
Fine Home Building
Follow
-
Fine Homebuilding
Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.
Start Free Trial Now -
GBA Prime
Get instant access to the latest developments in green building, research, and reports from the field.
Start Free Trial Now
Replies
My inspector wanted a 20 foot continuous piece of rebar from the bottom of the footing bent such that the end came up through the foundation wall and base plate with the copper wire clamped to it. The clamp had to remain accessible so I put an open back box on the inside wall with a cover plate for access.
Brian
There is a clamp that is specifically approved for copper to rebar and embedded in concrete.
Yup. I am just saying that the accessible clamp is what my inspector wanted.
I like the accessible clamp idea a lot better than putting dissimilar metals way down inside concrete where it's likely to stay wet.
-- J.S.
The rebar-to-copper connection around here has to be accesible, not just outside the foundation. When plans change and the ufer is no longer in an accesible spot we've had a welder extend the ufer as far as needed with additional rebar.
Beer was created so carpenters wouldn't rule the world.
It works!
My question is, how do you bond a Jetted tub that has Pex as supply lines?
Bond it to the steel part of the faucet,on the back.
Pardon my fat fingers.
http://www.hay98.com/
Thank You!
In Vegas, we had to embed a 20' rod into the footing specifically to serve as the UFER. The end bent up out of the footing just below the panel, and the ground wire was clamped to it. If that connection was going to be concealed behind sheetrock, a small access/inspection panel had to be installed to allow the connection to be inspected and/or repaired.
Bob