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314.1

lyledunn

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    Both 314.1 and 314.2 do not appear to have been considered. MCBs following an MCB provides zero selectivity. I assume that the Ze is very low due to a lot of buried metalwork and tanks, but even so the upfront RCD probably ought to be a suitable adjustable MCCB, and each pump fed from a separate RCD (or RCBO if available) for touch protection. Not a good or compliant design.

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  • 0

    Both 314.1 and 314.2 do not appear to have been considered. MCBs following an MCB provides zero selectivity. I assume that the Ze is very low due to a lot of buried metalwork and tanks, but even so the upfront RCD probably ought to be a suitable adjustable MCCB, and each pump fed from a separate RCD (or RCBO if available) for touch protection. Not a good or compliant design.

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