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What will you do when the water turns to steam? U/floor heating needs to be kept under 40-50degC. What stops your water expanding into the mains drinking water?

Of course it does, thanks again Lurch. I am having a brain fade evening/day.

434.4 says that, but only under fault current, and only if a single protective device may not be effective. You could argue that the RCD would provide adequate fault current protection, even though it is for additional protection.

No other points connected, the whole run was visible and I used the same route for the 6mm. Pheonix, after having a good read of the regs (433.4, 434.4 and 523.7), you are correct. Perhaps it wasn't necessary to condemn the arrangement. But it felt wrong to have a washing machine and a cooker...

Went yesterday to do a cooker swap. 6mm cable coming from outlet. Cooker switch above with integral socket outlet, with a washing machine plugged in. 9KW cooker, old and new same rating. 32A MCB. I had already upgraded the bonding at a previous visit. Seemed simple. Looked in Cooker switch and...

A woman I know was in the west end and she had a dump in the doorway of Stringfellows Nightclub, in front of the queue and security. 

Not quite, please post some pictures. your junction box, your porch light, your manufacturer's instructions, your cable route, your fuseboard (including main head) and anything else you or we can think of. They paint a thousand words apparently.

:slap

Good point. Thanks Lurch. 

So will they trip a lighting circuit almost every time a lamp blows? That would be a bit of a nuisance.

That makes sense, thanks SW.

Hi Paul, just read your link (https://www.linkedin.com/pulse/arc-fault-what-paul-meenan-ceng-fiet-miam-milp-pcqi). Thanks. In it you mentioned "the fact they do NOT work on ring final circuits" is this simply because there isn't a 32A one available? or because of something to do with ring...

You say you have moved house, but if you have moved into a flat, and there is another flat upstairs, you will need to fit fire rated downlighters

I have just been searching the draft dpc for AFDDs. It says they may be used, not should or shall be used (421.1.7). So it is left up to the designer. 532.6 mentions them, but only relevant if they have been specified, and relates to where they shall be installed. So as I see it, they are not...

Oh yes, quite right.

and what about existing lighting circuits with no cpcs? What would be the point?

here is the proposed reg again in TT systems this may mean putting in an additional rod, since even though the distributor does not provide an earth, the requirement is to prevent the dangerous touch voltage, and the main connection to earth is to the original rod. Also, without doing the...

Its here Dave 

I did read through quite a bit Went on holiday for 3 and 1/2 weeks at start of august intending to comment while away, even took lappy and byb. Didn't get time, or indeed internet connection, to comment unfortunately. 

sounds like the biomass will be hitting the fan come Monday morning