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    Brentleew's Avatar
    Brentleew Posts: 2, Reputation: 1
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    #1

    Dec 11, 2007, 10:39 PM
    Grounding a boost water pump
    Hi all,
    I would like some advice on grounding a water boost pump. It is 750 ft down the hill from the house and a conduit is installed to supply power to it. It is 220 volt single phase 1/2 horse 6.5 amps. Is grounding accomplished by an EGC from the main panel or can the pump be grounded only by a grounding rod at the pump location. We planned on 10 ga. THHN but weren't sure about the ground wire. Thanks -
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Dec 12, 2007, 03:35 AM
    No ground rod, earth is not to be used as an equipment ground, pull a green wire along with the feeders. I would be using all #8 copper wire for all three conductors.
    Brentleew's Avatar
    Brentleew Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Dec 13, 2007, 09:19 AM
    Quote Originally Posted by tkrussell
    No ground rod, earth is not to be used as an equipment ground, pull a green wire along with the feeders. I would be using all #8 copper wire for all three conductors.
    Also, is a service disconnect required at the lower pump site?
    We're set up to mount one at the upper panel location where a second pump is installed if it can be located that far away.
    Thanks, Brent
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #4

    Dec 13, 2007, 01:56 PM
    Yes a service switch is needed, to allow maintenance work and keep the switch in sight of or be able Lockout/Tagout of the switch.
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