Burial depth for ground wire to ground rod


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Old 06-25-20, 08:57 PM
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Burial depth for ground wire to ground rod

Are there any minimum burial depth for ground wire running to ground rod?

I just installed ground rod at my house because my house didn't have ground. It was grounded to water line before, but the previous owner had replaced water lines to PEX and ground was no longer connected.
So, I installed 2 ground rods and 4 AWG wire. At the moment, I buried ground wire just a inch below surface along the foundation wall. Ground rods are about a foot from the foundation wall and wires running to them are also about a inch below.
 
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Old 06-26-20, 03:24 AM
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the previous owner had replaced water lines to PEX
If the pipe coming out of the ground for the water service is still metallic it should be bonded to the electric service grounding system. That would still be the primary grounding electrode.

I installed 2 ground rods and 4 AWG wire
Just to note, the wire going to the ground rod (grounding electrode conductor) is never required to be larger than #6.

If the wire going to a ground rod is #6 or larger protection is not required. AFAIKO there is no required depth for the GEC.
 
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Old 06-26-20, 08:08 AM
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Did you place the rods a minimum of 6ft apart from each other?
 
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Old 06-26-20, 10:52 AM
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If the pipe coming out of the ground for the water service is still metallic it should be bonded to the electric service grounding system.
Underground portion is still copper, but what comes through the slab is PEX. Not possible to connect ground wire.

I know #6 is enough, but existing wire that used to run to water pipe was #4. So I just went for #4.
I'm thinking of using existing ground wire to ground gas pipe, which is also not grounded and under ground portion of this pipe is PE.

Ground rods are 7 ft apart. There was gas meter at 6ft, so just went a bit farther.
 

Last edited by lambition; 06-26-20 at 12:53 PM.
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Old 06-26-20, 11:12 AM
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Most gas services aren't automatically bonded. They aren't in NJ.
It's only when CSST is used that bonding becomes mandatory.
 
 

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