timberline1
New User
- Location
- NJ
- Occupation
- Electrical Engr.
Hi all,
Upgraded my panel to 200A, installed 2-8ft 5/8" GEC's more than 6ft apart. Continuous 6AWG CU from external emergency disconnect which has neutral and ground bonded. I thought this would suffice for my grounding and bonding needs.
Well system for water with poly pipe as the supply line to the house. The rest of the system is pex until we get to copper pipe running through the concrete slab of the house foundation. This copper feeds one toilet and the washing machine, so I guess a few ft of run from the slab up to the valves. Inspector wants #4Cu ran from disconnect to the water line at the washing machine.
I understand he has the final say on what gets passed, but I find this confusing. The copper is buried in the ground. If there was a fault on the few feet of copper, wouldn't it be grounded through the slab to the earth? Or does it lead to grounding loops to occur because these are technically two different grounding locations? There is maybe 20ft from the GEC's to where the attachment point at the washer inside would be.
TIA
NJ, 2020 NEC Code
Upgraded my panel to 200A, installed 2-8ft 5/8" GEC's more than 6ft apart. Continuous 6AWG CU from external emergency disconnect which has neutral and ground bonded. I thought this would suffice for my grounding and bonding needs.
Well system for water with poly pipe as the supply line to the house. The rest of the system is pex until we get to copper pipe running through the concrete slab of the house foundation. This copper feeds one toilet and the washing machine, so I guess a few ft of run from the slab up to the valves. Inspector wants #4Cu ran from disconnect to the water line at the washing machine.
I understand he has the final say on what gets passed, but I find this confusing. The copper is buried in the ground. If there was a fault on the few feet of copper, wouldn't it be grounded through the slab to the earth? Or does it lead to grounding loops to occur because these are technically two different grounding locations? There is maybe 20ft from the GEC's to where the attachment point at the washer inside would be.
TIA
NJ, 2020 NEC Code
