Current on Cold Water Bonding Conductor

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"Dumping" the main will not clear PoCo as a contributor. You need to isolate the neutral (from the service) as well as the grounded conductors, then you can rule out PoCo.

You may find no change in the current on the GEC when you open the mains and a lowering or vanished current when you lift the grounded conductors.
 
hardworkingstiff said:
"Dumping" the main will not clear PoCo as a contributor. You need to isolate the neutral (from the service) as well as the grounded conductors, then you can rule out PoCo.

You may find no change in the current on the GEC when you open the mains and a lowering or vanished current when you lift the grounded conductors.
Click to expand...
The idea of lifting grounds should take into consideration that the objectional current could very well be primary current finding ground through the building . Opening up the connections could subject you to higher voltages than you are trained to deal with. Always lift grounds as if they were hot. If dumping the main the current dissapears you know there is a ground fault some where on the premise wiring. If you dump the main and you still have objectional current call poco it is thier problem and they are better equiped to safely resolve the problem. Unless you have extensive training.
 
hardworkingstiff said:
"Dumping" the main will not clear PoCo as a contributor. You need to isolate the neutral (from the service) as well as the grounded conductors, then you can rule out PoCo.

You may find no change in the current on the GEC when you open the mains and a lowering or vanished current when you lift the grounded conductors.
Click to expand...

That's a very good point. I didn't think of that. With the Neutral connected
there is still a path for current even with the main open. Saturday I will "Isolate" the entire system. Neutrals,GEC,and EGC's.

For what it's worth I'm going to type however I want too.

I really don't care what people think. I'm getting old and my eyesight

is getting worse. Double spacing is easier for me to see. You don't

like it, then don't read it.
 
quogueelectric said:
The idea of lifting grounds should take into consideration that the objectional current could very well be primary current finding ground through the building . Opening up the connections could subject you to higher voltages than you are trained to deal with. Always lift grounds as if they were hot. If dumping the main the current dissapears you know there is a ground fault some where on the premise wiring. If you dump the main and you still have objectional current call poco it is thier problem and they are better equiped to safely resolve the problem. Unless you have extensive training.
Click to expand...

Another good point. After I open the main. I will measure the current on

all conductors before I remove them.
 
quogueelectric said:
The idea of lifting grounds should take into consideration that the objectional current could very well be primary current finding ground through the building . Opening up the connections could subject you to higher voltages than you are trained to deal with. Always lift grounds as if they were hot. If dumping the main the current dissapears you know there is a ground fault some where on the premise wiring. If you dump the main and you still have objectional current call poco it is thier problem and they are better equiped to safely resolve the problem. Unless you have extensive training.
Click to expand...

My post was wrong, thanks. I meant to say ungrounded conductors instead of grounded conductors. I was trying to convey that I have had experiences with voltage (in reference to our ground system) on the PoCo neutral.
 
A lot of people get whacked doing this and many never think it could be coming from the neighbors. I want everyone to go home to the family at the end of the day. Kiss the wife and kids, pet the dog, etc....etc....
 
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