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  • 30-06-2010 5:10pm
    #1
    grousedogtom
    Registered Users Posts: 463 ✭✭


    Hi i have a 3 phase supply which i want to fit a changeover switch to, now the problem is the back up generator is single phase and i want to wire it so the generator runs one phase which all the important equipment is on , can this be done safely using a 2 pole changeover switch?Thanks


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    #2
    M cebee
    Closed Accounts Posts: 4,431 ✭✭✭M cebee


    you'll need at least the 3 or 4-pole to break the lines/phases or 'all lives'
    of the esb supply to avoid risk of backfeed

    you may be able to link L1,L2 and L3 on the genny side of the changover if all loads are single phase

    i'm gone a bit rusty on the exact details-someone may know more specifics


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    #3
    grousedogtom
    Registered Users Posts: 463 ✭✭grousedogtom


    Yes thanks , do you know does the neutral have to be wired through the co switch , i would imagine it does incase polarity was reversed on gene?


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    #4
    M cebee
    Closed Accounts Posts: 4,431 ✭✭✭M cebee


    grousedogtom wrote: »
    Yes thanks , do you know does the neutral have to be wired through the co switch , i would imagine it does incase polarity was reversed on gene?

    gone a bit rusty on the genny side of things

    i think 3-pole will prob do for pme

    do you have any info on the genny and the loads

    you may want an rcd on the genny for ADS depending on it's size/type etc


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