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#97868 - 04/06/06 06:02 PM Water pipe bonding  
tmegger64  Offline
Junior Member
Joined: Mar 2006
Posts: 7
Naples Fl.
While inspecting unit remodel in a multiple occupancy bldg I checked the bonding for the water piping system in the units panel. Traced the bond to the water heater of the unit. 250.104(A)(2) says in essence that if the system is isolated from all other occupancies by use of nonmetallic water piping then the above bonding is acceptable. The question arises: How do you know if there is nonmetallic isolation? You don't The building is old as the hills and who knows if the metal piping system has any isolated areas. So the real question is: If it is left bonded in the unit and there isn't any nonmeatlic isolation will it make a difference anyway? I hate to see the EC have to run a bond in an old building to the service.


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#97869 - 04/06/06 08:23 PM Re: Water pipe bonding  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Is this a bonding conductor required by 250.104 or a grounding electrode conductor for the service?
Don


Don(resqcapt19)

#97870 - 04/07/06 06:15 AM Re: Water pipe bonding  
tmegger64  Offline
Junior Member
Joined: Mar 2006
Posts: 7
Naples Fl.
It's the bonding conductor per 250.104 for the water piping.


#97871 - 04/08/06 01:11 PM Re: Water pipe bonding  
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
Richmond, VA
The older the building, the less likely there are isolated sections of pipe.


Larry Fine
Fine Electric Co.
fineelectricco.com


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