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GEC to water pipe melting?

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winnie

Senior Member
Location
Springfield, MA, USA
Occupation
Electric motor research
If I read things correctly, the common underground metal pipe was replaced with a plastic underground pipe.

I suspect that the current on the GEC might be multiple bonds to metal piping inside the structure, making the metal pipe parallel to the neutrals.

-Jon
 
Joethemechanic

Joethemechanic

Senior Member
Location
Hazleton Pa
Occupation
Electro-Mechanical Technician. Industrial machinery
don_resqcapt19 said:
With a common underground metal water pipe in the area, that may not indicate a problem. The common metal water pipe, because of multiple connections back the utility transformer neutral at the other buildings in the area will have a very low resistance, and it is not uncommon to finde 25% or more of the neutral current flowing on the water piping. If there is little to no current on the actual service neutral and current on the water pipe, than you have an indication of a problem with the service neutral.
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I thought he said the water service lateral was PEX
 
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