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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The current board is obsolete so either I put a different manufactures kit in to the board or a new consumer unit.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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    I have a front end RCD Mainswitch consumer unit  30mA type AC and do not envisage changing it. If I get lots of newfangled electronics then I might do. Our new washing machine might contain a few electronics though. However, how unsafe did I feel just a few years back when we had rewireable fuses or those "really modern" MCBs ? It was common to "add" RCD protection by putting a boxed RCD in the tails upfront of the consumer unit mainswitch rather than replace the CU. Nowadays on a consumer unit I`d do a plain switch and RCBOs as favourite - oif course to total leakage allowed by the installation would be far greater than the upfront.

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    I have a front end RCD Mainswitch consumer unit  30mA type AC and do not envisage changing it. If I get lots of newfangled electronics then I might do. Our new washing machine might contain a few electronics though. However, how unsafe did I feel just a few years back when we had rewireable fuses or those "really modern" MCBs ? It was common to "add" RCD protection by putting a boxed RCD in the tails upfront of the consumer unit mainswitch rather than replace the CU. Nowadays on a consumer unit I`d do a plain switch and RCBOs as favourite - oif course to total leakage allowed by the installation would be far greater than the upfront.

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