Is this a required bonding jumper

Pinnie

Senior Member
Location
Ohio
Occupation
Commercial Electrician
Is this a required bonding jumper? I know where the water line enters the building if it’s metal it must be grounded, but as far as I understand this jumper is unnecessary.
 

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Here in NJ a bonding jumper connecting the hot and cold water pipes is required. The NEC is unclear on whether or not it's required. I wrote a PI to clarify that it was NOT required but the CMP rejected it.
 
Can't speak for other areas, but at least in Cleveland it's common to see the cold, hot, and gas all bonded together right above the water heater.
 
I had been taught to bond hot and cold together and never questioned it until today. Turns out it's not necessarily required in Washington State either.

WAC 296-46B-250 090 Bonding
(8) Hot and cold water plumbing lines are not required to be bonded together if, at the
time of inspection, the inspector can determine the lines are mechanically and electrically joined
by one or more metallic mixing valves.

Rob G
Seattle
 
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