Nearly all new domestic electrical work will require RCD protection to comply with the current regulations. Many older consumer units (commonly known as fuseboards) won't have this capability and so will need upgrading before any work is carried out. Consumer units don't just split your incoming electrical supply into different circuits for ease of installation or maintenance, potentially they are life saving devices so having them installed properly and in correct working order is crucial. The easiest way of complying with the current regulations when having new electrical work is with a consumer unit upgrade.
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