underground conduit for boiler control, between 2 buildings each with own service

[FREEBALL]

how do I bond a underground GRC between 2 buildings with separate services each building is fed with 600 amp 480v 3 phase 4 wire. I need to run a control conduit for the boiler. from one building to the other. I would like to use grc due to the parking lot/driveway load of tractor trailers. so can I use grc underground and stub up from 24 inches in pvc

thanx
jeff

 

[ptonsparky]

My preference would be pvc. It will last a lot longer 24" below the truck traffic than GRC.

 

[Coppersmith]

how do I bond a underground GRC between 2 buildings with separate services each building is fed with 600 amp 480v 3 phase 4 wire.

I'm not an expert on this subject however I believe the underground GRC does not need to be bonded. You do need to run a ground wire through the conduit and bond it wherever the conduit terminates at each end as normal.

 

[Cow]

I've ran a lot of pvc on farms under roads with HEAVY traffic, etc. I've never had an issue as long as I had the depth required.