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RCD selection and BS7671:2018+Amendment 2:2022

sparkiemike


My question relates to the latest regulations (BS7671:2018+Amendment 2:2022) and RCD selection.

I have an existing installation with an upfront 30mA type-AC RCD.

I am quoting for some work where there will be some electrical alterations for a new kitchen. No new circuits! Mainly some new sockets and LED lighting and relocating a cooker cable. So DC components will be introduced.

Is there a requirement to upgrade the RCD to a type-A RCD to comply with 531.3.3?

Are others anticipating fitting type-A rcds on their minor works now e.g. 4 new downlights in bathroom?

The current board is obsolete so either I put a different manufactures kit in to the board or a new consumer unit. Understandably the customer is reluctant to spend any more money

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  • 0

    You might not have any choice other than to replace the RCD if a new appliance such as a direct drive washing machine trips it.

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    You might not have any choice other than to replace the RCD if a new appliance such as a direct drive washing machine trips it.

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  • 0 in reply to Sparkingchip

    Would replacing the RCD make any difference, the cumulative effects of earth leakage current will cause any 30mA RCD to trip.

    Using type-A RCDs is to stop the blinding effects of DC current, which would stop the RCD from tripping, not cause additional unwanted tripping. 

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