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  1. J

    Asked to bond a sink (table)

    Sorry, i should be banned from posting after midnight as i literally didn't proof read it! See corrected version with edits on bold:
  2. J

    Asked to bond a sink (table)

    Bonding a sink that isn't extraneous doesn't do anything to help the work done because it didn't affect the integrity of it or accessible from outside it. If the neutral was lost the whole zone would end up at the same level so that wouldn't be the additional hazard in most cases. Bond/earth it...
  3. J

    Recent Home Improvements....

    How did you tank the floor before tiling?
  4. J

    Recent Home Improvements....

    We also got someone to do the work tops as they were some engineered stone but here is the tiling effort, got the scars to prove it
  5. J

    Recent Home Improvements....

    Thing is you do all this and start getting annoyed because it's impossible to get the tiles all lined up as they seem to be different sizes once you get them on the wall! But then you look at the tiles in other people's houses and realise they're all worse;) We did our own kitchen from a shell...
  6. J

    Amps carried through air

    That would be a good way to pass the time, could bring a full testing setup and give it once over!
  7. J

    builders supply- amendment 3

    Op i like the idea of having the RCD up front of the metal db just in case. Otherwise no point in earthing the db as nothing will trip if the case becomes live due to a fault on the tails
  8. J

    Bond or no bond ? that is the question .

    You should only main bond things that are extraneous ie that might introduce a potential into the equipotential zone. To determine whether things are extraneous the easiest way is to test to the supplier earth. Bonding other things causes additional hazards which although are low risk are still...
  9. J

    What do people make of this ventilation notification lark?

    Yeah that's what i mean, usually together with someone complaining their loft is full of mould
  10. J

    What do people make of this ventilation notification lark?

    Given the amount of cooker hood or bathroom fans with crushed Flexi or leaking or with no fall in an unheated space or venting into the cavity/void, they should do something about it, but I've no idea if registration is the best answer.
  11. J

    4mm spurred from ring main

    Yes this ones been done to death, result is it's not a proper ring according to the informative appendix, but it can't cause an overload on the short leg as long as the joining point is more than iirc 15% of the way round the ring therefore it's ok in terms of minimise the chance of overload...
  12. J

    Amps carried through air

    Yes it is Leidenfrost effect - Wikipedia - https://en.m.wikipedia.org/wiki/Leidenfrost_effect
  13. J

    Basic insulation _______

    IGave you an optimistic but I'll give it a go! Basic protection in bs7671 is the primary insulation or other protection against live parts contacting anything else including yourself. True that 1000V gloves could perform that task, but it's not really part of the installation so I'm not sure it...
  14. J

    Dangerous upgrade to crabtree rcbo's

    An isolator only isolates the outgoing terminals. The fly lead is an incoming terminal. If you turn off an isolator it only isolates the outgoing terminals. the incoming line terminal is certainly of course still at phase voltage, and if there is any circuitry the incoming neutral would be live...
  15. J

    Accessory screw covers

    Didn't notice any staining, the blu tac tends to stay in one lump. Maybe "blew takk" from the 99p store would have that problem but i only buy the branded stuff from wh Smith;)
  16. J

    Accessory screw covers

    Some blu tac does it without any damage at all
  17. J

    18th Edition Bonding requirements

    So the boiler has a double fault situation that can't be covered by bs7671, no earth and an l-e fault, therefore it's a very dange situation. The towel rail and bathroom location is irrelevant, basically this is the"all conductive surfaces are dangerous" argument which is true, and applies...
  18. J

    Two showers off one supply

    True but that seems to only apply to "priority", the confusingly named "non priority" gives priority to the one that was switched on first which will be what the OP wants "Garo shower non priority boards. Neither shower has priority, whichever shower is on first will remain on. The second...
  19. J

    Stolen live 3ph service head !!!

    Who walks past a cutout and thinks dodgy Dave down the pub will pay them enough to make it worth while riskng their life?:eek:
  20. J

    18th Edition Bonding requirements

    You'd also need to remove any bonding from the met otherwise you'd likely get a path between the water bond and the gas pipe

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