Changing Cu to PEX - what about ground?

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Old 01-20-16, 08:06 PM
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Changing Cu to PEX - what about ground?

if I want to completely change copper pipes to PEX...what do I do with the existing grounding wires ? I see jumpers on my water heater and later by the water meter.... Do I just disconnect them all and leave only the main ground which goes from the main panel directly to the water pipe BEFORE the water meter....so this is fact would still be the only copper pipe going into the Ground.

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Old 01-20-16, 08:15 PM
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You won't need the jumpers at the water heater. Assuming you are not changing the water service into your house to plastic, you still will need to have a GEC to within 5 feet of where the water service enters the house and jumper around the meter in one continuos length. Use #4 copper or #2 aluminum for a 200 amp service OR #6 copper or #4 aluminum for a 100 amp service.
 
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Old 01-20-16, 09:24 PM
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What's the purpose of jumping around the meter if all of the pipe on the homeowners side is PEX?
 
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Old 01-20-16, 10:33 PM
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The jumper was in place when the house was plumbed with copper. The copper is being replaced with pex.
 
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Old 01-21-16, 10:48 AM
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Yes, if everything after the meter is pex there is no jumper around the meter required.
 
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Old 01-21-16, 03:43 PM
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ok...so I am just removing all grounding up to the meter.

and sicne I am running 200Amp service I just run a new #4 green wire from the main panel to the point before the meter.

thanks!
 
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Old 01-21-16, 08:08 PM
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#4 bare copper is what is normally used, either solid or stranded, but green insulated copper is acceptable too. If cost is an issue, use #2 aluminum.
 
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