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Electrical ground rod and wire located where I want to pour a slab

Posted on 9/13/21 at 12:40 pm
Posted by Pintail
Member since Nov 2011
11852 posts
Posted on 9/13/21 at 12:40 pm
I have a garden between my house and patio that I want to get rid of to allow for more storage. It is a little 3'x20' run that wraps around the house and is surrounded by the patio on one side and the garage on the other. The electrical panel is located right above it with the ground rods buried in the garden so I don't have anywhere else to drive rods.

When I pour the slab, what do I need to do with the ground rod, connector, and line? Bury/drive it beneath the slab. Leave it exposed. Leave an access to it.

I will probably have it done by someone but want to make sure it is done correct/to code.
Posted by Coon
La 56 Southbound
Member since Feb 2005
18563 posts
Posted on 9/13/21 at 12:41 pm to
I’m not an electrician but I added to my driveway and they poured right around my existing ground rod.
Posted by Major Dutch Schaefer
Location: Classified
Member since Nov 2011
37935 posts
Posted on 9/13/21 at 1:36 pm to
My ground rod sticks up through the slab under my electrical panel.
Posted by Chasin The Tiger
Lake Travis, TX
Member since Sep 2012
615 posts
Posted on 9/13/21 at 2:04 pm to
If the slab has rebar, you can clamp a #4 copper wire to it and use that as your new grounding rod. Bring that wire through the slab via conduit and connect to your panel.
Posted by Jaben
Bham
Member since Dec 2017
44 posts
Posted on 9/13/21 at 5:51 pm to
I would block it out with a 4” piece of pvc. It allows you to not mess with what’s working and allows easy replacement if there’s an issue. As long as it’s not interfering with the new pad.
Posted by Unobtanium
Baton Rouge
Member since Nov 2009
1850 posts
Posted on 9/13/21 at 7:19 pm to
Rebar encased in concrete is not a good ground, if at all.

Follow Jaben's suggestion and block out the existing ground rod so you can access it later or replace the ground rod if necessary.
Posted by Pintail
Member since Nov 2011
11852 posts
Posted on 9/14/21 at 2:09 pm to
quote:

block out the existing ground rod so you can access it later or replace the ground rod if necessary.


Just curious, what would I need to access or replace the ground rod for in the future?
In the event I needed to replace, couldn't I just drill a hole and drive a new rod.
Posted by Unobtanium
Baton Rouge
Member since Nov 2009
1850 posts
Posted on 9/14/21 at 3:21 pm to
quote:

what would I need to access or replace the ground rod for in the future?


I've had to replace the ground clamp that connects my house to the ground rod, so having access is important (to me at least). Ground rods do corrode over time and if you have to replace yours you need to ensure that the ground wire can reach the new rod.
Posted by kengel2
Team Gun
Member since Mar 2004
33409 posts
Posted on 9/14/21 at 3:47 pm to
We've used these before. Looks a little more professional than just blocking out.

LINK

Posted by Unobtanium
Baton Rouge
Member since Nov 2009
1850 posts
Posted on 9/14/21 at 7:52 pm to
I was thinking of what we used where I used to work.

This is close: LINK
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