grounding needed for whole house water system??

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shade23

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I have well water with thirty feet of 1" copper water pipe to the house. After the copper pipe enters the house I ground to it before it connects to the pressure tank. Between the pressure tank and the house water filter there is a dielectric union entering the water filter.
My question is should I jumper the water filter, which would ground the entire house water system.
The house electrical main panel is properly grounded to the incoming water line and ground rod.
My concern is that if the ground on the incoming water line became corroded or loose, then the household plumbing could carry stray current or act as a ground for a ground fault. Someone in bare feet on a concrete floor washing clothes could be at risk.
Thank You
 
shade23 said:
I have well water with thirty feet of 1" copper water pipe to the house. After the copper pipe enters the house I ground to it before it connects to the pressure tank. Between the pressure tank and the house water filter there is a dielectric union entering the water filter.
My question is should I jumper the water filter, which would ground the entire house water system.
The house electrical main panel is properly grounded to the incoming water line and ground rod.
My concern is that if the ground on the incoming water line became corroded or loose, then the household plumbing could carry stray current or act as a ground for a ground fault. Someone in bare feet on a concrete floor washing clothes could be at risk.
Thank You
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the grounding electrode system is not allowed to be relied on to be part of the ground fault path.

you can certainly run a bond wire around the water filter. it is not a code violation. likely there is at least one EGC connected to the copper piping inside already (such as at the hot water heater).

I wonder why they put a dielectric union on the house filter. Most are plastic these days.
 
shade23 said:
My concern is that if the ground on the incoming water line became corroded or loose, then the household plumbing could carry stray current or act as a ground for a ground fault. Someone in bare feet on a concrete floor washing clothes could be at risk.
Thank You
Click to expand...

Ground fault current goes back to its source, the electrical panel and not to earth via the water line. Normally there is no current on the grounding system
 
To answer your question, yes, you should put a bonding jumper around the union.

Strictly speaking it is bonding, not grounding, and the purpose is that if the house plumbing becomes energized by a loose hot wire then it will likely trip a breaker before electrocuting you. It has nothing to do per se with creating a connection to ground. But if your service neutral is properly grounded to the water pipe as you describe, then you can bond the rest of the piping to it. The code section is 250.104 (A)(4).
 
The outside metallic water pipe is a grounding electrode - which it's purpose is "grounding"

The interior metal piping system is "bonded" so that in the event a circuit should energize the piping there will be low impedance path to facilitate high fault current which will allow fast operation of the overcurrent protective device.
 
kwired said:
The outside metallic water pipe is a grounding electrode - which it's purpose is "grounding"

The interior metal piping system is "bonded" so that in the event a circuit should energize the piping there will be low impedance path to facilitate high fault current which will allow fast operation of the overcurrent protective device.
Click to expand...

Thank you, this answers my question
 
kwired said:
The outside metallic water pipe is a grounding electrode - which it's purpose is "grounding"

The interior metal piping system is "bonded" so that in the event a circuit should energize the piping there will be low impedance path to facilitate high fault current which will allow fast operation of the overcurrent protective device.
Click to expand...

Thank you, also my thoughts
 
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