250.50

jap

Senior Member
Occupation
Electrician
Just to verify,

If a shop with a concrete floor is fed with a Feeder, and, has a piece of rebar stubbed out of the concrete, but, has no metal water pipes, metal support structures, ground rings, rod and pipe electrodes or plate electrodes installed, that one rebar concrete encased electrode can serve as the sole point of contact for the grounding electrode conductor at the structure with no need for any other GEC's to be installed, correct?

JAP>
 

jap

Senior Member
Occupation
Electrician
How would one know if you walked up to a 30x 50 slab an the concrete guys stubbed one up at the outer edge?

JAP>
 

petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
How would one know if you walked up to a 30x 50 slab an the concrete guys stubbed one up at the outer edge?

JAP>
You would not necessarily know. You would need to ask the concrete guys. Or you pound two rods and connect what maybe is a cee to the two rods and call it a day.
 

jap

Senior Member
Occupation
Electrician
If they bothered to do so.

A couple of ground rods are maybe $30. A few minutes to pound them in. Most cases it's a hundred dollar fix. Won't save any money trying to avoid it.
You would not necessarily know. You would need to ask the concrete guys. Or you pound two rods and connect what maybe is a cee to the two rods and call it a day.

I generally lay 2 rods in the ditch regardless, but, was questioned as to why the added expense if the CCE is available for connection already.

Jap>
 
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