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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The current board is obsolete so either I put a different manufactures kit in to the board or a new consumer unit.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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    Sparkingchip said:

    However I have been to jobs exactly like this where the new hob was tripping the old Type AC RCD and had to be replaced with a Type A anyway

    I have not come across this yet. It would be good to know why, rather than installing a new RCD in the hope it solves the problem. It feels a bit like when you send your car in for repairs and the mechanic just replaces one part after another and you hope that the issue is resolved quickly.

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    Sparkingchip said:

    However I have been to jobs exactly like this where the new hob was tripping the old Type AC RCD and had to be replaced with a Type A anyway

    I have not come across this yet. It would be good to know why, rather than installing a new RCD in the hope it solves the problem. It feels a bit like when you send your car in for repairs and the mechanic just replaces one part after another and you hope that the issue is resolved quickly.

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