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110V 16A sockets in a ring arrangement

Tom D

I am planning to make a 110v circuit containing up to 10 x 16A 110V single sockets. The circuit is up to 100m long. Is 32A MCB type C and H07 4mm2 will be ok for it or I need to take into consideration of using RCBO instead and calculate voltage drop to size required cable properly?

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    It would also be "unusual" to have 32A overcurrent protection for 16A sockets for unfused plugs -  conventionally 16A or sometimes 20A would be expected.

    100m is quite long for a 110V circuit - (not sure if that's the circumference of the ring or the distance to the furthest point, but either way) v.d. might be quite a limiting factor. If it's fed from a transformer from a 230V part of the installation, you'd have to consider v.d. in not only the 110V part but the 230V part and the effect of the transformer as well. A 230V circuit and local transformers might start to look more attractive.

       - Andy.

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  • 0

    It would also be "unusual" to have 32A overcurrent protection for 16A sockets for unfused plugs -  conventionally 16A or sometimes 20A would be expected.

    100m is quite long for a 110V circuit - (not sure if that's the circumference of the ring or the distance to the furthest point, but either way) v.d. might be quite a limiting factor. If it's fed from a transformer from a 230V part of the installation, you'd have to consider v.d. in not only the 110V part but the 230V part and the effect of the transformer as well. A 230V circuit and local transformers might start to look more attractive.

       - Andy.

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