steel

  1. E

    bonding structural steel buried within fabric of building

    was in a half finished house today that has just had an extension built on it, and i was suprised to see 10mm bonding to the steel RSJs that span the garage and where the kitchen has been knocked through and at the front where a porch has been created. traced them back to the MET, have all been...
  2. ackbarthestar

    Machine workshop install.

    I've just got back from looking at a job. He requires 6 3-phase machines installed throughout a workshop to supplement the 4 other machines. Very straightforward, until I saw the internal structure. Steel framed building with, what looks like, asbestos panels on the walls and ceiling / roof...
  3. S

    tips on bending awkard angles on steel conduit.

    I have to bend some steel conduit as shown in the picture about how would you get the angles spot on? The picture isnt really accurate as i belive the 2 sets will be similar. doing it another way isnt an option as thats how the client wants it too look like. the black opject is a wall support...
  4. S

    R1+r2 values for steel wired armour

    Hi all can anyone tell me where the values for r1+r2 for swa are in the regs or onsite guide, can't find them, thanks chris
  5. S

    Sub Board Problems - Advice Needed! -

    My first post as I always find what I want (up till now) Hope someone can help. I have been asked to fit a 3P socket from a sub board that is fed from a 3P 24 way board 70 meters away. The main board is a PME (0.12) but the sub board is located on the wall of a steel container sitting on the...
  6. 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...
  7. 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...
  8. Had8Lives

    Galvanised Conduit screws

    Hi, Anyone know where you can buy M4 Galvanized screws for conduit box lids? Brass ones rust outside.
  9. 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...
  10. 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
  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...
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