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Meter tails over 3m

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  • 04-04-2016 7:07pm
    #1
    Sparkobrien77
    Registered Users Posts: 52 ✭✭


    Just curious lads what the regs say about tails over 3 meters in a domestic property I'm an industrial spark so not up to scratch on the regs,

    My understanding is its a 80A isolator to replace the 63A switch fuse in the customers board and a 63 A Mcb type B for the tails located in the esb meter cabinet ?

    If correct just wondering what benfit it is to install it this way,cheers.


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    #2
    Tuco88
    Registered Users Posts: 1,051 ✭✭✭Tuco88


    Sparkobrien77 wrote: »
    Just curious lads what the regs say about tails over 3 meters in a domestic property I'm an industrial spark so not up to scratch on the regs,

    My understanding is its a 80A isolator to replace the 63A switch fuse in the customers board and a 63 A Mcb type B for the tails located in the esb meter cabinet ?

    If correct just wondering what benfit it is to install it this way,cheers.

    Yes you are correct good sir.The reason why I think it's done, depending on what size your meter tails are for example take 16mm2, you will want to protect the cable correctly with the right size overcurrent device a 80amp HBC is not ideal on a 16mm2 cable over 5 meters long let's say.


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    #3
    Sparkobrien77
    Registered Users Posts: 52 ✭✭Sparkobrien77


    Tuco88 wrote: »
    Yes you are correct good sir.The reason why I think it's done, depending on what size your meter tails are for example take 16mm2, you will want to protect the cable correctly with the right size overcurrent device a 80amp HBC is not ideal on a 16mm2 cable over 5 meters long let's say.

    Ya I suppose it makes more sense alright rather than relying on the main incoming fuse,thanks for the response,the only thing is tho why would you have a 63 amp breaker feeding into a 80 amp isolator


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