Source of "arc"

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simple ohms law

simple ohms law

If when you remove the meter jumper the voltage is on the street side is pocos problem open neutral if the voltage is on the customers side customers problem open neutral.
 
yes I am suggesting that the current is coming in

yes I am suggesting that the current is coming in

mdshunk said:
Are you suggesting that the current is coming "in" (or could come in) on this customer's neutral? Hogwash.
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It is not hogwash just keep your panties in a bunch and listen. go to previous thread and follow it for education.
 
quogueelectric said:
It is not hogwash just keep your panties in a bunch and listen. go to previous thread and follow it for education.
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This customer had no meter. Think about it. That only leaves one possibility.
 
Here it must be the water co. intstalling them. Cause I've never had to.

Something to chew on. Thanks for the education. :smile:
 
frizbeedog said:
Here it must be the water co. intstalling them. Cause I've never had to.

Something to chew on. Thanks for the education. :smile:
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Check out 250.53(D)(1)

We install a jumper when the water meter is inside the house - which is not always the case. Sometimes they are at the street.

Of course, it has been several years at least since I've seen incoming water not in PVC (new residential)
 
Note that current the water line or an arc when removing the bonding jumper does not mean that you or your neighbors have any type of problem. The water pipe is in parallel with the service grounded conductors and it is not unusual to find 20% or more of the grounded conductor flowing on the water pipe. In this case there would be an arc when you disconnect the jumper and only a few volts across the open and is not a problem or dangerous.
The danger is when there is an open or high resistance connection in the grounded conductor. If that is the case then you can have full line voltage across the open pipe or jumper.
 
I know in MN you are required to put a bonding jumper around the water meter..the reason I was told was that they use rubber gaskets and it interrupts the continuity of the supplemental ground..I can see it especially if it is a plastic meter..I believe it is the same in ND as when I was doing work there several years ago we had to install bonding jumpers on the water meters as well..oh yea and it has to be a continuous wire all the way to the main GEC..here in the frigid north we have the water meters in our houses and they use an auto reader kind of like the POCO..
 
don_resqcapt19 said:
Note that current the water line or an arc when removing the bonding jumper does not mean that you or your neighbors have any type of problem. The water pipe is in parallel with the service grounded conductors and it is not unusual to find 20% or more of the grounded conductor flowing on the water pipe. In this case there would be an arc when you disconnect the jumper and only a few volts across the open and is not a problem or dangerous.
The danger is when there is an open or high resistance connection in the grounded conductor. If that is the case then you can have full line voltage across the open pipe or jumper.
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Good point Don. Since the waterline is in parallel with the neutral, some current will be flowing even with no problems. Not the best situation, but "normal" with our distribution systems.
 
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