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So spin, in the 18th it looks like they have combined the Ut and disconnection time into one reg.

Really since the 17th first came out the SB rules were relaxed in domestic subject to certain caveats (rcd being only one) which we were all glad about re: god awful G/Y everywhere in bathrooms ;), it is still a valid additional protective measure though elsewhere as always.

Ps. I was correct about the 25V Ut in agricultural in the 16th :)
 
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So spin, in the 18th it looks like they have combined the Ut and disconnection time into one reg.

Really since the 17th first came out the SB rules were relaxed in domestic subject to certain caveats (rcd being only one) which we were all glad about re: god awful G/Y everywhere in bathrooms ;), it is still a valid additional protective measure though elsewhere as always.
Yes, it has made life easier.
Though there are two problems I have encountered.
One is that very rarely the Zs on some circuits of locations containing baths and showers, are not sufficiently low enough to allow ADS.
Two is that if there is no main bonding because of plastic services, can supplementary bonding still be omitted?
 
Probably, as plastic services mean that caveat no longer applies in most cases, and we are now reying solely on RCDs ;) , god how I wish the IET would sort their existing s**t out before introducing new regs ;)
 
As another poster earlier had said re: 'ductor testing joints in conduit, I have had to do this twice back in the day, what a mind numbing and boring job that was :(
Later with more modern MFTs that cut-out if the CPC rises above 50V (or 25V if you set it up that way) we have on occasion just used a hi-current loop test to check for reasonable integrity, no other test was specified in this case, so it was better than relying on a 20mA continuity test only in the first instance.

Ps. did the continuity test first btw
 
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