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Thread: Grounding Whirlpool Tub Motor and Heater - Bonding Panel to Electric Water Heater

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    sea-bee chuck b's Avatar
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    Jan 2011
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    Default Grounding Whirlpool Tub Motor and Heater - Bonding Panel to Electric Water Heater

    Hello! Installing the above. Water comes from a well which supplies our small seasonal cottage through a pvc pipe into the cottage which transitions to copper by the expansion tank. I then progress to a sediment filter, water softener and then an electric water heater. The water heater is bonded to the electric panel, which is grounded to two stakes in the ground (not cement rebar). The water heater also has a jumper between the hot and cold pipes.
    Question: I noted that the water heater has a bonding clamp attached to the cold water side copper pipe. Is that the correct side for that. Then it travels to the electrical panel for bonding/grounding.
    Question: When I ground the whirlpool water heater and motor, can I just bond them both ( 2 separate clamps & 2 separate 20-amp circuits GFCI protected) to 2 clamps on the cold water side of the bathtub plumbing (cold is best right), or do I need to go all the way with both copper wires to the grounding rods? Guessing that the cold water lines are grounded via the bonding at the water heater which travels to the panel and subsequently to the grounding rods. Also, do I use the same gauge copper wire as the circuits they ground, i.e. 12 gauge for 20-amp circuit for grounding to pipes or do I use heavier gauge say a #10 copper wire? Thanks.
    Last edited by chuck b; 02-05-2012 at 06:10 AM.

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