bonding water & gas at seperate building

[la2151]

I am doing a house that has a detached garage & has a 50 amp sub panel in it. The main panel on the house has the water & gas bonded,The sub panel has 2 ccc,Neut & grnd. I did drive a ground rod at the garage but am uncertain as the garage does have gas & water( all are capped off). I am not fully understanding nec 250 If I need to bond the water & gas at the garage again as well.So many new things to learn yet in life. Thanks

 

[JohnJ0906]

I am doing a house that has a detached garage & has a 50 amp sub panel in it. The main panel on the house has the water & gas bonded,The sub panel has 2 ccc,Neut & grnd. I did drive a ground rod at the garage but am uncertain as the garage does have gas & water( all are capped off). I am not fully understanding nec 250 If I need to bond the water & gas at the garage again as well.So many new things to learn yet in life. Thanks

The water needs to be bonded - 250.104(A)(1). If the underground portion is metal, than it is a grounding electrode that must be used - 250.52(A)(1).

The gas can be bonded with the EGC than supplies equipment connected to it - 250.104(B)

 

[A/A Fuel GTX]

Be sure you bond to the grounding conductor and not the grounded conductor.

 

[SG-1]

I think 250.104(A)(3) applies to structures supplied by a feeder. It is nearly identical to 250.104(A)(1).

250.104(B) includes a good FPN.

 

[LarryFine]

I am not fully understanding nec 250 If I need to bond the water & gas at the garage again as well.

Yes. You can (and must) parallel the EGC with the piping. You can not parallel the neutral with the piping.

The EGC needs to be a better bond than the piping, and that the piping should never carry neutral current.