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earthed

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  1. K

    extending a cooker circuit

    hi all quick question,cooker switch is behind the cooker,can i through crip it to extend it,cover it with a blanking plate then come out left or right off it to re position the switch in a safe zone.no rcd there on a tight budget ?# many thanks for your help
  2. B

    Earthing conduit boxes

    Is there anything in regs to say that conduit boxes should be earthed where there is an electrical connection Ii.e. klix unit
  3. D

    ZS in a PME earthed household

    Please be gentle with me it's been a long day. In my previous life I was an electrician, suppose I still am but not practicing installation work. So I am trying to get up to speed with some modern practices, mainly Earth Loop Impedence. In my daily work I constantly use a megger for safety...
  4. Y

    Why VT Secondary Yellow phase is earthed?

    Hi all, I have a scheme in which the Y-Y VT secondary yellow phase is earthed. and is fed to a 2watt meter energy meter. can you explain why this is done so. regards, kannan
  5. M

    armoured cable should it be earthed

    hi everyone first message on here, im sure it is simple to mst people,i need to know if the outer metal strands on an armoured cable MUST be earthed. it is from the board to a garage at the bottom of the garden and the earth is run in the black cable, neutral in grey and live in brown or red...
  6. I

    Earthed metal protection

    hi there may need to bury some meter tails in wall (25mm 16mm earth), not my usual practice, now they will not be below 50mm so they will need earthed mechanical protection. can any one advise as whats best to use for mechanical protection and the size of the earth cable required for earthing...
  7. S

    steel conduit

    Would you put this as a code 4 on a pir? No steel conduit boxes have earth fly leads. By my understanding they all needs to be eartherd.
  8. D

    Concealed cable

    I've got to route some 4mm TnE cable out the middle of an internal wall and up to a safe zone. For the part of that route which is not in a safe zone I'm looking to provide mechanical protection (reg 522.6.6) through earthed armouring (something like...
  9. telectrix

    earthed or not

    almost completed a rewire. about to do bonding and earthing tomorrow. looking at the existing arrangements, the MET in the old DB has a black cable, roughly equiv to 10mm disappearing up under the bathroom floor above the DB. on the outside of the building , theoverhead incoming enters a box...
  10. Goody

    Metallic Sheath on SWA cable should be earthed or not?

    Hi, I have a 3 core 2.5mm SWA cable connecting the main CU to the CU in the garage (30 ft away - detached). The garage’s CU has 100A main switch with 2x16a & 1x6a MCB’s for two radials and a light circuit. My question is, the cable already has an earth core but do I still have to terminate it...
  11. DaveyD

    Cooker Switch to Cooker Connection : Out of zones. Earthed Steel conduit or trunking?

    Evening Gents and Ladies So, moving a cooker switch that's over a hob 300mm to right. Want the Load cable below surface to drop down to below work surface within zone BUT then end up back behind fitted cooker not the cabinet below. As subject, what do you guys do? Would you do as I do for eg...
  12. J

    old board earthed conduit system?

    Hi all got a look at a friends db in his old flat at first it appeared to have no earths at all but I wonder if it is using the conduit as earth. No green/yellow in board or circuits. Is there any way of identifying this. thanks.
  13. H

    class 1 equipment with no exposed earthed metal

    How do you do an earth bond test for these? I have re read the IEE code of practice on this but I can't find an answer apart form: "...can give misleading results" For example a class 1, totally plastic vacuum cleaner, at least on the outside (it has tiny metal screws not screwed into earthed...
  14. G

    Does underfloor heating need an earth?

    Must underfloor heating always have an earth? I was under the impression that it always needed an earth, but a builder I sometimes do work for has already put it down and there are only two wires and no earth at all.I know that normally the earth is the metal sheathing that comes with the...
  15. K

    Data centre, earthed floor?

    Hi, We are currently pricing for work in a New data center, off the spec, it states 'earth floor' My business partner thinks this is to Bond every metal leg of the raised floor? Any body have previous experience of this, seem very strange, I've worked maintenance in data ctrs before and...
  16. F

    confused

    Guys Can someone explain 50mm gap rule what`s acceptable is PVC conduit ok protected by mcb?or rcbo? cheers
  17. T

    Back box's not earthed

    Swapping C.U noticed all backbox's are not earthed. What would you put on the cert? and what code would this come under.
  18. carl9254

    RCD Protection

    Goin to quote a job tonight, went round yesterday for a quick look. Basically there redecorating there master bedroom, there is only 1 double socket next to the door, they want 3 more around the room. Its an old use box with no rcd's and dont want to upgrade, will i be ok putting the new...
  19. M

    Light switch

    Hi all, i intend replacing my old light switches in my house. I have a 2 gang light switch wich operates single lights. what do you call this type of switch? also i have a 2 gang switch, 1 is a 2 way and the other is for a single light, again what do i look for to order a replacement? lastly if...
  20. E

    No earth in lighting circuit

    HI Guys Hope Santa was good to you all :D Something I have not come across before and was hoping someone could point me n the right direction. My mother inlaw wants me to put up a light in her Kitchen. The fitting needs to be earthed but there is no main earth in the light circuit. How do I do...

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