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What are the requirements for a consumers main switch on a TPN 200A new supply ? Can the tails from the metering go straight into a panel board with a 4 pole 200A MCCB as the main switch, or do you have to install a separate isolator

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The new mains cut out and metering are being installed shortly , this will feed a 250A Panel board adjacent to the service head. The panel board will have a four pole 200A MCCB as a main switch and will therefore isolation all of the upstream installation. It seems pointless installing a separate main switch but will the supplier accept this and will it comply. UKPN and the electricity supplier  are sitting on the fence , well they would be if you could talk to anyone !

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    Does the size of the supply matter?

    Given that a separate isolator is not required on the domestic scale, I assume not.

    However, it is convenient to install one, because it then leaves you free to do anything inside the panel board, or even replace it.

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  • 0

    Does the size of the supply matter?

    Given that a separate isolator is not required on the domestic scale, I assume not.

    However, it is convenient to install one, because it then leaves you free to do anything inside the panel board, or even replace it.

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