Apartment grounding question.

[kbrandt]

I have 2 apartments that need service upgrades. 100 amp each.

Each has its own meter for gas and water, we have to bond gas and water to the ground rod, here.

I know I can use 1 ground rod, but do I have to bond both gas and water for each apartment or just hit one? And were in the code book does it address this question.

The service wires tie in both from one drop.

Thanks for any input.

 

[augie47]

I would say it would depend on if the gas and water were metallically connected.
That would make them one line or two and each line must be bonded.

 

[Dennis Alwon]

Each has its own meter for gas and water, we have to bond gas and water to the ground rod, here.

I don't get it. Explain what you do here-- I realize it is not what you are asking but I am curious.

 

[Little Bill]

I have 2 apartments that need service upgrades. 100 amp each.

Each has its own meter for gas and water, we have to bond gas and water to the ground rod, here.

I know I can use 1 ground rod, but do I have to bond both gas and water for each apartment or just hit one? And were in the code book does it address this question.

The service wires tie in both from one drop.

Thanks for any input.

Try 250.104

 

[Cavie]

I have 2 apartments that need service upgrades. 100 amp each.

Each has its own meter for gas and water, we have to bond gas and water to the ground rod, here.

I know I can use 1 ground rod, but do I have to bond both gas and water for each apartment or just hit one? And were in the code book does it address this question.

The service wires tie in both from one drop.

Thanks for any input.

Augie is correct. Also you need 1 EGC to 2 ground rods unless your prepared to prove 25 ohms on one.