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[ackbarthestar]

Because the general public don't understand what they are doing, say you connected you parallel earth to a single socket on its own circuit and "Fred" wanted it removing but said why should I get a spark to do it when I can do it my self, there goes your parallel earth path and your circuit is compromised.

Where in the regs does it state any of that? That may have been in the the 16th edition when you bonded virtually everything.

So you are admitting that things can go wrong like a RCD failure, unfortunately that is something we can not account for when installing them, other wise we wouldn't carry out testing as it would be pointless.

So you are now advocating that 'Fred' who knows I MUST NOT SWEAR ON AN OPEN FORUM all about electrical installations should do the work himself rather than employing a competent person? ....... no, of course you're not, that would be irregular and would probably affect an insurance claim if it could be shown that Mr Numpty had buggered up the electrics.

Reference to cross bonding is explained in GN8. EEBADS has been around as long as there has been the necessity for automatic disconnection under earth fault conditions. RCDs are comparatively new invention to domestic electrical installations, although residual currents and voltage detection for earth fault interruption designs have been sitting on someones desk since the 1920's.

RCDs cover a multitude of sins, motor cars get us independently from A to B, that doesn't mean that they don't fail from time to time

 

[Engineer54]

Because the general public don't understand what they are doing, say you connected you parallel earth to a single socket on its own circuit and "Fred" wanted it removing but said why should I get a spark to do it when I can do it my self, there goes your parallel earth path and your circuit is compromised.

Where in the regs does it state any of that? That may have been in the the 16th edition when you bonded virtually everything.

So you are admitting that things can go wrong like a RCD failure, unfortunately that is something we can not account for when installing them, other wise we wouldn't carry out testing as it would be pointless.

Using your own analogy from your last paragraph, what is different to your example in your first paragraph?? You have no control what Fred does, so you cannot cater for his actions, just like you can't foresee an RCD failing at some point in the future.