ivsenroute
Senior Member
- Location
- Florida
Here is the scenario.
Existing 100 amp overhead service being replaced to include meter base and feed to the existing untouched main panel.
As part of this installation a supplemental rod was installed in addition to the existing grounding system attached to the copper water main. Green #6 THHN copper was run to the rod.
The hot and cold copper pipe was bonded along with the black gas pipe.
Inspector wants another rod installed or prove the <25ohm rule.
Contractor states the existing house and service only had one grounding point at the water main which worked great for years, the panel was not being replaced and the added supplemental rod was a bonus, as was the bonding of the water pipe and gas black pipe. One rod added now means there are 2 grounding points.
Inspector states that the water main is the main grounding system and the rod is supplemental and all supplemental rods either need to prove the 25 ohm rule or add a second.
What is your experience and opinion?
Existing 100 amp overhead service being replaced to include meter base and feed to the existing untouched main panel.
As part of this installation a supplemental rod was installed in addition to the existing grounding system attached to the copper water main. Green #6 THHN copper was run to the rod.
The hot and cold copper pipe was bonded along with the black gas pipe.
Inspector wants another rod installed or prove the <25ohm rule.
Contractor states the existing house and service only had one grounding point at the water main which worked great for years, the panel was not being replaced and the added supplemental rod was a bonus, as was the bonding of the water pipe and gas black pipe. One rod added now means there are 2 grounding points.
Inspector states that the water main is the main grounding system and the rod is supplemental and all supplemental rods either need to prove the 25 ohm rule or add a second.
What is your experience and opinion?