steel

  1. J

    Connecting 1930s steel conduit to new CU

    Has anyone got experience terminating steel conduit from 1935 (so likely imperial measurements) into a new metal enclosure? This was the work of the previous electrician to touch the board and I'd like to get a far better fixing this time around. No chance of a re-wire and the IR readings are...
  2. B

    Steel framed units multiple PME supplies

    Multiple commercial units within the same steel frame cant each have a PME supply (from the same transformer), we have to install an earth electrode to each unit. Did anyone know that? The NICEIC tech help didnt today... Even though NPG supply a MET cant be used. A break in the neutral...
  3. D

    Cable Clipped above steel beams on to a Plaster board ceiling

    Hi There Just a quick one, I'm wondering what's everyone's thoughts on this are. A subby has clipped a cable to a plaster board ceiling using 3m sticky pads and plastic cable ties, below that ceiling is a number of steel beams spanning the length of the corridor and then below them is a...
  4. L

    Installing plug sockets in steel furniture.

    Hi all, Figured I'd come straight to the experts with this one because I don't have a great deal of electrical experience. I'm a designer at a furniture manufacturing company. We manufacture furniture almost entirely out of folded sheet steel profiles. Currently I am working on designing a...
  5. A

    Electric shock off live steeltech shed!!

    Hello all, Looking for help here as I've come across a strange call-out today. Bare with me here: Got a call from a customer saying they had received an electric shock from their steeltech shed, not once but twice. To give a bit of a background, there are two sheds in their back garden. One...
  6. S

    Would T&E be approved for use in steel conduit and outdoors?

    Hi, My first post so hopefully I am correct in posting it here. My question is, I am thinking of an IP rated outdoor socket for the back garden. I have drilled out to the exterior and now wish to move the socket 1 meter away from where the hole is. I would say use of steel conduit would be...
  7. cliffed

    MBPC to steel columns in warehouse area

    Steel columns for building into concrete… no inter- connection of Beams … Wooden beams used for interlinked supports … would MBPC be required to each column…
  8. impish15

    Getting 10v on Steel Capping

    Hi All Recently bought a wandering lead and was practicing with it on a few of my relative houses checking if metal sockets / fittings / appliances had continuity etc and also checked 0v on some of the fittings. Couple of items with no continuity (CPC popped out at the back so re-terminated)...
  9. Aaron b

    Steel Container/cabin with PME supply

    Hello, Where I work there's a steel cabin that other employees have installed and powered up without certification. Am I correct in thinking it's covered under part 717.411.4 that it can not be connected to a PME supply? I've been asked to test it and I'm concerned with the design and...
  10. B

    Solar Flexible steel conduit as mechanical protection

    Hello I’m new to the forum (posting on it anyway). I could do with some advice... Over the last 2 years I have been subcontracted (labour only) to commission solar PV systems. Often these are newbuild properties and when I get there the panels are already on and the DC cabling done. About...
  11. J

    Steel Awning frame outside EP zone, bondit?

    Hi customer had installed a 10m awning that is secured to a very substantial 6” box steel frame, concreted in either end - large goal post if you will. It is fitted on the garden patio, just outside the entrence to his living area accesd by sliding doors. The motor is a low current single...
  12. mattg4321

    ‘Extending/enlarging’ steel trunking

    I have a potential job coming up where there is some 2x2 steel trunking that is completely overfilled and the lid is missing from various points. I need to add more cables on this run too ideally. Are there any clever products/methods out there to increase the size of this trunking to say 4x4...
  13. W

    Steel cleats for SWA

    do they do anything on the market for small SWA cabling yet?, only seen the strandard pvc cleats seen a few jobs where people have used 20mm black enamel conduit saddles instead lol!
  14. C

    SWA joint the steel of a 2 core

    Hi everyone, I have a 2 core 10mm2 SWA from a DB to a consumer unit to be joint. I know seems a silly question but how can I joint the steel of the SWA? Thank you
  15. C

    Steel Container

    A client has recently had a 10ft x 6ft Steel Cabin delivered. It will be a permanent addition for a block of flats outside for storing things in for contractors. They want a light inside and a floodlight outside. Currently next to it about 5 yards away is a bin store which has a light in it...
  16. h.abrar94

    How to calculate the resistance of steel armour under fault conditions 70 oC for CSA 95mm2

    Hi All, hope your all well. I was hoping if I can please get some advice in regards to SWA. In Particular using SWA as CPC. Cable size 95mm2 I have a table for SWA which shows various information, in the last two columns it shows the "resistance of steel armour under fault conditions at 70...
  17. happysteve

    Cutting neat notches in a stainless steel cooker hood chimney

    Eh up :) Is it possible to cut a neat notch - say arch shaped, with the arch diameter about 25mm - in a stainless steel cooker hood chimney, without either making a mess of the chimney, or breaking/burning out tools, or both? Special hole saw - or maybe regular holesaw used for steel - and...
  18. rsgaz

    Best tool for cutting(removing) stainless steel cable ties.

    Hi all, Just to be clear, this is not for cutting off the excess when installing stainless ties, I already have the Partex tool for that. I mean removing them at a later date, and not damaging the existing cables. Aviation snips are no good, you can't get the jaws in far enough to where it...
  19. mattg4321

    Sockets in a public place inside locked steel cabinet

    Been asked to supply 13a sockets to 2 positions round a sports facility. The expected load is small, but the length of cable run is fairly long. I’ll probably be using 10mm2 2core with the swa as cpc. They have had problems with kids etc gaining access after hours and fiddling with things etc...
  20. A

    Structural steel bonding clamps

    Hello All, I am working on a kitchen extension which has 3 Universal Beams bolted together which sit on block-work. There is no direct connection to earth. However when tested it has a path to MET of 2kOhm. As a result I plan to bond this steelwork. The design of the room means these beams...

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