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The last remaining domestic circuits without RCD protection.

Sparkingchip
I prepared an EICR this morning for a two bed flat.


The peak installation has a 30 mA RCD main switch, which surprisingly despite being more than ten years old is a type A, so no RCD issues there.


The off-peak supplies two storage heater circuits run in surface mounted plastic mini trunking without RCD protection, so again no RCD issues. If I were installing the storage heaters with new circuits I would install RCD protection, but there’s no reason to condemn an existing installation.


I am just pondering exactly what can be installed in a domestic installation now without any RCD protection with the 18th Edition of the Wiring Regulations making them a requirement on lighting circuits there cannot be much left on the list.


 Andy B.
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  • 0
    Probably not long Andy.

    I usually mention the advantage of an emergency light near the supply.

    Or sometimes its own lcal RCBO circuit.

    I tend to go the Plain isolator and seperate RCBO route, costs more but is a bit more resilient.

    If it must be a dual RCD board then I tend to use a few RCBO circuits for shower, cooker and boiler for instance, again adding some resilience.

    RCDs can make things safer and in my experience problems are rarer than some tink might be the case.

    Having said that we must not lose sight of two things 1/ Working RCDs might only save 95% of the population (5% not saved!) 2/ They might have a failure rate of up to 7%.

    I think one danger is, in line with all other safety devices, people take greater risks if they know they`ve got additional safety such as an RCD - more folk drive like maniacs because they have airbags and crumple zones
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  • 0
    Probably not long Andy.

    I usually mention the advantage of an emergency light near the supply.

    Or sometimes its own lcal RCBO circuit.

    I tend to go the Plain isolator and seperate RCBO route, costs more but is a bit more resilient.

    If it must be a dual RCD board then I tend to use a few RCBO circuits for shower, cooker and boiler for instance, again adding some resilience.

    RCDs can make things safer and in my experience problems are rarer than some tink might be the case.

    Having said that we must not lose sight of two things 1/ Working RCDs might only save 95% of the population (5% not saved!) 2/ They might have a failure rate of up to 7%.

    I think one danger is, in line with all other safety devices, people take greater risks if they know they`ve got additional safety such as an RCD - more folk drive like maniacs because they have airbags and crumple zones
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