Quote:
Originally Posted by ThrownRazor25  Listen mate im on your side lol.Hes a wee know it all twat who has done a 17th course and is spouting out all this crap all the time.trouble is he is so sincere about it half the guys at work are starting to believe him.He is adamant the new regs say that if the board is protected by an rcd or if individual circuits all have rcbos then there is no need for an earth because the rcd/rcbo will operate on the imbalance of live and neutral. |
ok, I have explained how an RCD COULD work without an incoming earth with an extraneous path of 7666 ohms or less (but probably not in the required time), but that is an accidental by-product of there being no earth in the first place
How the hell does this guy think ADS will be achieved
I teach 17th edition, and this guy is talking utter tosh
he has no doubt misenterpreted something he was told on the course
along the lines of RCD protected circuits only needing a Zs of 1667 ohms or less for their 60898 MCB's etc etc
If you want to 'douse his flames' a little, ask him for the relevant regs numbers to back up his 'theories'
