Grnd to incoming H2O pipe if all else is PEX?

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vliposky

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After the first 6 inches of incoming galvanized water pipe, the entire plumbing system (residential) is done in PEX plastic. Is it necessary to run copper ground wire from Main Circuit Breaker panel to that first 6 inches? Main Circuit Breaker (SE) panel is properly grounded with ground rod. (What would be purpose of the redundant grounding?)
 
Incoming water supply line

Incoming water supply line

Pipe is 3/4 galvanized protruding into residential building 6 inches after which everything is plastic (PEX). Pipe is buried 3 feet and is fed by city main at meter 30 plus feet away...
 
grounding

grounding

Yes it is necessary for you to connect the ground clamp unless you like lawsuits. The ground rod is not enough to safely or legally ground the service
 
vliposky said:
Pipe is 3/4 galvanized protruding into residential building 6 inches after which everything is plastic (PEX). Pipe is buried 3 feet and is fed by city main at meter 30 plus feet away...
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S'mise said:
I agree. It's not an electrode(under 10'), but it must be bonded.
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Sounds to me like it is much more than 10'. The galvinized water pipe is the main service ground. The ground rods are redundant and required.
 
If the metallic water pipe is 10' or longer in contact with the earth then it qualifies a a grounding electrode and must be used. If it is less than 10' underground then you do not need to connect it. This would not be a grounding electrode or a water piping system therefore it would not require bonding.

Metallic water pipes are required to be supplemented by an additional electrode. Typically on a new building this is the CEE in the footing. If you have a CEE then the ground rods are not required.
 
infinity said:
If the metallic water pipe is 10' or longer in contact with the earth then it qualifies a a grounding electrode and must be used. If it is less than 10' underground then you do not need to connect it. This would not be a grounding electrode or a water piping system therefore it would not require bonding.
Metallic water pipes are required to be supplemented by an additional electrode. Typically on a new building this is the CEE in the footing. If you have a CEE then the ground rods are not required.
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Trevor
I am not sure if I understand what you wrote here (what I bolded/italicized in your post).

For a water pipe to be considered an Electrode, it does not matter what size diameter, just that it makes 10' or more of contact with the earth and NO more than 5' of the pipe within the building. The OP's post makes it seem as though there is at least 10' of earth contact, which makes it an electrode that has to be included in the requirement of 250.50.

As far as the WATER SYSEM requiring BONDING, the system is not metallic, therefore does not require bonding.
 
Pierre,

infinity said:
If the metallic water pipe is 10' or longer in contact with the earth then it qualifies a a grounding electrode and must be used. If it is less than 10' underground then you do not need to connect it. This would not be a grounding electrode or a water piping system therefore it would not require bonding.
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He said basically the same thing you did. :)

Pierre said:
...NO more than 5' of the pipe within the building.
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To be clear, there can be more than 5' within the building, it just can't be used for our earthing connection.

I know you know, this was for the people in Peoria. :)
 
Less than 10' in contact with the earth, not a grounding electrode and 6" piece of metal pipe inside of the building, not a metallic water piping system, bonding not required.
 
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