Explain why RCDs fitted into extension leads or incorporated into plugs are forbidden

this question is inside a mentor guide at the place i work for someone to be signed off as a fully competent electrician.

none of us can think of any reason why this may be the case, can anyone else?

Parents
  • Let us remind ourselves of the scope of various BS standards.

    BS 7288:2016 Specification for residual current devices with or without overcurrent protection for socket-outlets for household and similar uses

    Nothing to do with RCDs in plugs or inline in extension leads. They would fall under

    BS 7071- Specification for Portable Residual Current Devices instead.

    This 2nd standard has never been either in or out of BS7671 for the simple reason that it is not relevant to the fixed wiring.

    The recent shenanigans of 7288 and 7671 is not relevant to the OP, though the same argument may be applied, a 7071 RCD is not dangerous, but should not normally be relied upon as  the sole means of protection.

    Mike.

Reply
  • Let us remind ourselves of the scope of various BS standards.

    BS 7288:2016 Specification for residual current devices with or without overcurrent protection for socket-outlets for household and similar uses

    Nothing to do with RCDs in plugs or inline in extension leads. They would fall under

    BS 7071- Specification for Portable Residual Current Devices instead.

    This 2nd standard has never been either in or out of BS7671 for the simple reason that it is not relevant to the fixed wiring.

    The recent shenanigans of 7288 and 7671 is not relevant to the OP, though the same argument may be applied, a 7071 RCD is not dangerous, but should not normally be relied upon as  the sole means of protection.

    Mike.

Children
  • Sorry I was not taking a shot at you, more to point out that the removal and reinstatement of RCD sockets and fused spurs to 7288 in BS7671 has nothing to do with extension leads anyway.

    (What does get my goat is to do with ivory towered compartmentalization of something that should be better joined up. There are far too many standards, far too many committees, spending a lot of time either undercutting each other, or deciding that things they do not want to think about are out of their scope, or failing to liaise, and they do not fit well with each other. And the result is very expensive, not very informative, 'standards'.)

    M.