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steel

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  1. S

    Metal Trunking as CPC but how to make a hidden joint?

    I am designing a hotel, rooms along corridors will be fed from steel trunking connected to PVC conduit into consumer units in each room. The corridor ceilings will be closed denying access to the trunking after installation. I would like to use the trunking as the CPC but how do I connect the...
  2. C

    T+E in 25mm steel conduit?

    Hi every one, Im new to this forum. FNG!. A simple question that I cant seem to find the answer to is can I run TnE in steel conduit? I know singles would be the best option but the customer has lots of TnE and wants to keep the cost down. I would strip out the cable but I dont have enough...
  3. Had8Lives

    Galvanised Conduit screws

    Hi, Anyone know where you can buy M4 Galvanized screws for conduit box lids? Brass ones rust outside.
  4. Dean Williams

    weird lighting fault

    Hi folks while testing this theatre, i attempted to get a Zs from an emergency exit sign. The steel conduit is being used as cpc. when i connect my three probes to l,n,earth i'm getting 110v on the screen and when i press test it comes up with about 160 ohms. i put a voltmeter across and found...
  5. P

    Does Anyone Recognise this Steel Trunking Please?

    I am on a job in Abingdon, and struggling to find the make of this trunking? Any ideas would be appreciated. Thanks for looking. Nick
  6. 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.
  7. 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...
  8. I

    twin and earth on steel beam

    I am working in a small industrial unit which is being converted into a kids go kart track the lighting is currently wired in twin and earth pvc cables clipped along the steel beams. The place needs to be tested and certificated is there any issues with wiring in twin and earth along steel beams...
  9. Amp David

    For Sale Steel lockable van safe

    Large steel lockable box for tools in the van. Just seeing if anyone is looking out for one. If so i'll get some pics up loaded.
  10. B

    help with steel conduit and trunking

    hi chaps after serving my time doing small elec repairs and installs,i then worked in the service field for approx 20 years.I am as good as anyone fault finding on any circuit or control circuit etc.However i have a strong possibility of a job offer ( i know thats very rare in this current...
  11. B

    main bonding to structural steel

    what size is acceptably? how to terminate bonding to steel (clamp or) cheers
  12. Z

    Best drill bits for metal and stainless steel?

    Hi guys, I am sick of buying cheap or expensive drill bits which only last for a couple of drills. What do you think which exact make or model is the best and lasts longest?
  13. C

    Mounting system for CORRUGATED STEEL ROOF for commercial install?

    I have done slate and tiled roof PV installs - what mounting systems do folks use / recommend for corrugated mild steel roofing as found on commercial warehouses? Thanks in advance
  14. R

    Bonding steel frame?

    I've been looking at some work in a little steel framed prefab bungalow (you know the type, corrugated tin jobbies). The frame seems to run through the entire house and is used for all the architraves round the doors etc, i.e. the frame is visible, just painted over. I'm not totally familliar...
  15. T

    Steel or PVC?

    Need to first fix a porch, does it matter which capping I use? PVC or Steel?
  16. B

    tray,trunking and conduit (steel)

    hi guys im working for a contractor who is involved in alot of tray and trunking work and i havent really touched on this area since the training centre and would be greatful if any1 could highlight any key points in how to do afew off sets and bends. I cannot believe how little information...
  17. i=p/u

    routing of cables in domestic?

    hello again, what are your methods of chasing plaster board walls with skim. example : say i want new socket on to ring circuit at height 450mm, how would you get the cable down past the noggin/support between studs. do you chase out either side of noggin and cut into the noggin, so...

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