Grounding the Foundation

[dandrews1281]

I'm doing a house from foundation to finish and I would like to incorporate a Ufer ground. I understand the basic concept but there are a couple questions I've asked to a few inspectors and got differing answers. One inspector told me I had to do the footings as well as the foundation, although not the inspector in the town the work is being performed in. Another inspector said i could use the rebar in the foundation to attach the ground wire to, but recommended i use something else, i.e. laying 2 ground rods across the rebar horizontally to get the 20ft. Anyone more familiar with this process that could give me pointers? Thanks

 

[luckylerado]

Make sure that the concrete is in direct contact with earth ie. footing rather than say foam insulated foundation wall.

 

[ActionDave]

Get a code book and look at 250.52(3). There is a lot of confusing stuff in the NEC but this one is not that hard.

 

[dandrews1281]

appreciate the help. seems straight forward but just wanted to make sure

 

[Smart $]

View attachment 13173

FWIW, the depicted "nonmetallic protective sleeve" is not specifically required for general compliance. It or some other protective means is required where subject to physical damage... and that assessment will vary from AHJ to AHJ.

Another tidbit regarding OP... Code text is quite specific what can be used as the electrode... and two [10'] ground rods laid across the rebar do not qualify.

 

[kwired]

Get a code book and look at 250.52(3). There is a lot of confusing stuff in the NEC but this one is not that hard.

And tell those inspectors mentioned to get one and read it as well:roll:

 

[shortcircuit2]

If there are isolated sections of foundation / footing with rebar as a qualified Concrete-Encased Electrode per 250.52(A)(3), installed at one building, are we required to include all sections into the Grounding Electrode System of the Building?

(New Construction)

 

[ActionDave]

If there are isolated sections of foundation / footing with rebar as a qualified Concrete-Encased Electrode per 250.52(A)(3), installed at one building, are we required to include all sections into the Grounding Electrode System of the Building?

(New Construction)

End of that section say, "No". Not in so few words, but one per building is enough.

 

[shortcircuit2]

End of that section say, "No". Not in so few words, but one per building is enough.

Thanks, missed that last sentence.