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Number of appliances on one radial line

Former Community Member over 4 years ago

Hello all, I would really like some advice/reassurance. We are having our kitchen done and the existing wiring is a radial line. The builders are installing a 2.5mm TE line which services a double socket (coffee machine), dishwasher, boiling water tap and washer dryer.

My concern is that a single radial line is insufficient for the loading s involved.

I would really appreciate your thoughts.

0 Former Community Member over 4 years ago

Hi all, just looked and the builder is not telling me the right details. The cooker line is actually a 6mm. Is this able to run a 7.2kw induction hob and 5kw cooker on a 45A mcd? Thanks
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0 AJJewsbury over 4 years ago

SVHomeowner:

Hi all, just looked and the builder is not telling me the right details. The cooker line is actually a 6mm. Is this able to run a 7.2kw induction hob and 5kw cooker on a 45A mcd? Thanks

To have proper overload protection (rather than relying totally on diversity) the cable need to have a rating at least that of the MCB. Cable rating vary depending on how they're installed - 6mm² is only good for 45A if clipped direct or equivalent (e,g. embedded in plaster) or in free air - if it's run in other ways - e.g. in building voids or worse through thermally insulating material it'll be shy of that.

The obvious solution is just replace the MCB with a 32A one.

- Andy.
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0 Former Community Member over 4 years ago

builder has said he’s going to use the existing 10mm cable

Builder or electrician?

Have you confirmed that the installer can issue you with an electrical installation certificate (EIC) that is acceptable to your local building control?

Regards

BOD
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Number of appliances on one radial line

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