Plumbing Ground
- Thread starter mikec568
- Start date
- Status
bphgravity
Senior Member
- Location
- Florida
Re: Plumbing Ground
Yes, if you are refering to 250.52(A)(1).
Even though it is desired to have the GEC as short as possible, the metal water pipe will still be required to be used as a grounding electrode, no matter how far it is from the service.
Yes, if you are refering to 250.52(A)(1).
Even though it is desired to have the GEC as short as possible, the metal water pipe will still be required to be used as a grounding electrode, no matter how far it is from the service.
hbiss
EC, Westchester, New York NEC: 2014
- Location
- Hawthorne, New York NEC: 2014
- Occupation
- EC
Re: Plumbing Ground
No. First, why are you bonding a subpanel to the copper water line? Second, if this was service equipment the 5 foot rule WOULD apply (as Brian said) and you have to run a grounding electrode conductor back to within 5 feet of where the water service enters the building.
-Hal
No. First, why are you bonding a subpanel to the copper water line? Second, if this was service equipment the 5 foot rule WOULD apply (as Brian said) and you have to run a grounding electrode conductor back to within 5 feet of where the water service enters the building.
-Hal
Re: Plumbing Ground
Mike,
Check with your local AHJ. In my town we are allowed to connect the GEC to the water spigot in the back yard even when the water service enters from the street. However, this is not really using the underground piping as a grounding electrode, it is simply bonding the interior piping. So I guess they are not requiring us to use the UG pipe as an electrode in this case, but rather the 2 grounding rods they require. Most homes out here have non metallic water mains anyway, even the older homes as the old UG pipes are replaced, go with PVC. However is is unheard of to have non metallic piping inside of an older home, a fact which makes the bonding very important on service upgrades. We are also allowed to bond the gas piping with a jumper at the water heater.
Brian
Mike,
Check with your local AHJ. In my town we are allowed to connect the GEC to the water spigot in the back yard even when the water service enters from the street. However, this is not really using the underground piping as a grounding electrode, it is simply bonding the interior piping. So I guess they are not requiring us to use the UG pipe as an electrode in this case, but rather the 2 grounding rods they require. Most homes out here have non metallic water mains anyway, even the older homes as the old UG pipes are replaced, go with PVC. However is is unheard of to have non metallic piping inside of an older home, a fact which makes the bonding very important on service upgrades. We are also allowed to bond the gas piping with a jumper at the water heater.
Brian
stamcon
Senior Member
- Location
- South San Francisco CA
Re: Plumbing Ground
Now, what happens if there is at least 10' of metallic water pipe in the ground in the backyard? If the electrical service is located at the rear of the property, can the GEC to the water pipe be made within 5' of the backyard pipe entering the structure?
[ July 30, 2004, 01:30 AM: Message edited by: stamcon ]
Now, what happens if there is at least 10' of metallic water pipe in the ground in the backyard? If the electrical service is located at the rear of the property, can the GEC to the water pipe be made within 5' of the backyard pipe entering the structure?
[ July 30, 2004, 01:30 AM: Message edited by: stamcon ]
- Status