CEE Ground ( UFER ) setup

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Bama_Electrical

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Location
Alabama
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Electrician
I typically do not do new residential construction, mainly do remodels, but will be starting the rough-in phase in about month or so for a new build. I have to go onsite and setup the CEE next week. The slab will be a monolithic slab and the main home will have a vapor barrier in the footer, as well as the slab. Looks like I will be able to get the CEE setup in the footers for the garage (no vapor barrier here). I will be working off of the 2020 NEC code. 200 Amp service, GEC at the meter. Planning to put the Service Equipment on the garage side since it will be in close proximity to the CEE. I have seen installations where a bare #4 copper exits outside the slab into the dirt and runs up the wall to the Service Equipment and I have seen rebar exit inside the walls and then copper from there and exit through the wall to the SE. Pros and Cons to one or the other? Recommendations? All of my bonding will be done outside. I am also still trying to understand 230.85 and how it might apply here.
 
I personally like a rebar stubbed up below the meter /main, then I put in a two gang 'mud ring' and a brass clamp / #4 or whatever to the service facing the inside of the garage. I usually bring it out in a way that the phone / cable guy can access it.
If I go out to the site and there is plastic down under the rebar I cut out enough so the rebar will be compliant.
 
tortuga said:
I personally like a rebar stubbed up below the meter /main, then I put in a two gang 'mud ring' and a brass clamp / #4 or whatever to the service facing the inside of the garage. I usually bring it out in a way that the phone / cable guy can access it.
If I go out to the site and there is plastic down under the rebar I cut out enough so the rebar will be compliant.
Click to expand...
This is how it’s done 99% of the time. Slab contractor stubs up the rebar and paints it either green or orange so the block masons know to leave that cell with an opening for you. Also keeps the steel guys from filling it during bond/tie beam pour.
 
I would rather have a continuous run of #4 to the rebar. Use an acorn clamp and then roll enough up to reach where the service will be... I usually bury the extra so no one will steal it. No jb and IMO, much cleaner but you do have to get to the job an extra time. Most of the time I had my builders trained to do it so I didn't have to make the trip.

Make sure you get it inspected
 
You mentioned vapor barrier on footer as well as slab.
Read 250.52 (3)
Metallic components
Information note for what it's worth.
I also think in 2020 there was a change in wording.
It does not good to isolate the proposed electrode from earth.

Fyi, give 250.66(B) a read as well and there was a change in 2017. Do not know if additional changes were done in 2020.
If you a water line coming up in a different location and the line is plastic coming in and you need to bond you can stub up a bar at that location and use a jumper. Save you some cost. This electrode has several application to save on copper.
Give 250.68(C) (3) changed in 2014 and better defined in 2017. Do not know of any change for 2020.
 
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