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411.3.3 BS EN 60309

Billy Boy

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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    Martin Cook: 
    Thanks....
    Would the risk assesment, if carried out,  be client driven or would we need to carry this out, also if it was a new build installation surely 411.3.3 would be relevant and RCD protection required?

    Good point. If it was a new build and the building was yet to be occupied, then a risk assessment would be impossible.

    As Andy says, under certain circumstances, RCD protection may have been omitted for good reasons from the start. For older installations, the risk assessment will balance the chance of the risk occurring and its consequences against the cost of updating. That decision seems to be remarkably similar to the need to decide whether the non-compliance should be C3 or C2.

    Similarly, if an EICR were being done between tenants, there can be no true assessment of risk, so does that mean C2?

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    Martin Cook: 
    Thanks....
    Would the risk assesment, if carried out,  be client driven or would we need to carry this out, also if it was a new build installation surely 411.3.3 would be relevant and RCD protection required?

    Good point. If it was a new build and the building was yet to be occupied, then a risk assessment would be impossible.

    As Andy says, under certain circumstances, RCD protection may have been omitted for good reasons from the start. For older installations, the risk assessment will balance the chance of the risk occurring and its consequences against the cost of updating. That decision seems to be remarkably similar to the need to decide whether the non-compliance should be C3 or C2.

    Similarly, if an EICR were being done between tenants, there can be no true assessment of risk, so does that mean C2?

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