earthed

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  1. E

    earthed fuse board.

    I found this fuse board at work. The main earth appears to be clamped to the side of it then run down to the main earth terminal, not sure why this has been done or if it is common as Im fairly new to the game. If anyone could help that would be great.
    • evansjrraves
    • Thread
    • board earthed fuse fuse board
    • Replies: 19
    • Forum: UK Electrical Forum
  2. 1Justin

    tails in zone, run through wall without earthed conduit - OK?

    Meter on internal garage wall, and CU just the other side internal to the house. Currently there is no mechanical protection on the ex. tails where they go straight through the wall. I need to fit replacement tails. Can I safely assume it's OK and normal provided that I keep them in zone where...
    • 1Justin
    • Thread
    • conduit earthed garage meter other tails through wall without zone
    • Replies: 4
    • Forum: UK Electrical Forum
  3. J

    2 core cable to metal light switches

    Went to a flat recently where the cable is run through metal conduit to metal back boxes on a TN-S system. Built in the 60's the flats have aluminium strand cable that is sheathed by a braided woven material (vic cable?) and although old is serviceable. The matal conduit is earthed back to the...
  4. N

    Metal conduit as earthing - is that OK

    Hi, Just been to a block of flats - 1920's - testing the landlords lighting (that's all that there is communal area run off a timer, no switches for users). There's no earthing to the lights - although they're all out of reach - but I got excellent Zs reading as I guess all the earthing is...
    • Noddy67
    • Thread
    • conduit earthed earthing electricians' talk fittings metal separate
    • Replies: 40
    • Forum: UK Electrical Forum
  5. 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
    • kellogs64
    • Thread
    • circuit cooker earthed electricians' talk extending protection switch
    • Replies: 17
    • Forum: UK Electrical Forum
  6. 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
  7. 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...
  8. 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
  9. 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...
  10. 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...
    • ianphilip007
    • Thread
    • aus earthed electricians' talk metal protection
    • Replies: 34
    • Forum: Australia
  11. 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.
  12. 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...
    • DomB
    • Thread
    • aus cable earthed electricians' talk led route steel through
    • Replies: 5
    • Forum: Australia
  13. 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...
    • Goody
    • Thread
    • aus cable earthed electricians' talk metallic sheath swa
    • Replies: 27
    • Forum: Australia
  14. 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...
  15. 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.
    • jozza
    • Thread
    • aus board conduit earthed electricians' talk old system
    • Replies: 11
    • Forum: Australia
  16. 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...
  17. 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...
    • Grant M
    • Thread
    • aus earth earthed electricians' talk heating metal sheath underfloor underfloor heating
    • Replies: 18
    • Forum: Australia
  18. 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...
    • Kiers1970
    • Thread
    • aus centre data earthed electricians' talk floor
    • Replies: 6
    • Forum: Australia
  19. F

    confused

    Guys Can someone explain 50mm gap rule what`s acceptable is PVC conduit ok protected by mcb?or rcbo? cheers
    • frankmac
    • Thread
    • aus cable conduit confused depth earthed electricians' talk fuse protection
    • Replies: 8
    • Forum: Australia
  20. 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.
    • timo
    • Thread
    • aus earthed electricians' talk
    • Replies: 11
    • Forum: Australia
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