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411.3.3 BS EN 60309

411.3.3, does this apply to industrial 3 phase socket outlets 32amp ? Just checking what thoughts are around an existing industrial unit with Commando style plugs and sockets, for machines generally, but no 30ma protection. Carrying out an EICR so coding @ C2 ? 

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  • also if it was a new build installation surely 411.3.3 would be relevant and RCD protection required? 

    Either a 30mA RCD or a documented risk assessment. There are still a few occasions where 30mA RCD protection isn't a good idea - where sockets are intended to feed IT racks for instance - as normal leakage current would cause unwanted tripping and the risks of shock are minimal anyway.

        - Andy.

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  • also if it was a new build installation surely 411.3.3 would be relevant and RCD protection required? 

    Either a 30mA RCD or a documented risk assessment. There are still a few occasions where 30mA RCD protection isn't a good idea - where sockets are intended to feed IT racks for instance - as normal leakage current would cause unwanted tripping and the risks of shock are minimal anyway.

        - Andy.

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