steel

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  1. R

    UK Nightmare with Steel Conduit

    So as I’ve asked about this a few times and I’ve had some time off over Christmas I’ve decided to start it. I’ve first started to cut and thread all the galvanised conduit. Assembled it all with the end boxes and dome lids. I’ve then primed it and then using some ZG90 sprayed it white. I’ve...
  2. Charlie_Don't_Surf

    Steel conduit maximum capacity for 90 degree thermosetting cables

    Hi, as part of a project for my level 3 C&G 2365 course, we need to provide power to a number of 230v single phase socket outlets on a ring final circuit for a workshop area within a building designed for light industrial work. The considerations about current carrying capacity and other...
  3. J

    What am I looking at? Steel CPC?

    Hi all, This is found behind a single socket, house probably wired 1970. Can you tell me about the steel wire earth? Why does this differ to the copper cpc throughout the house? Thanks
  4. David1977m

    Trunking- to use PVC or Steel.

    Normally I would say PVC for a small office in a house. However, they are in the middle of deciding if the building will become a six-bedroom hostel for people with issues (so there is a possibility the office might get damaged), or if it will be converted into a dental surgery. The risk...
  5. J

    UK Steel plate?

    This is in a flat, the plasterboard at the back is the bathroom wall surface. Is it appropriate to protect the incoming and tails with a steal plate fitted behind the DNO board? Worry about penetration form the bathroom but also Eddy currents and heating of a steal plate. Obviously the CUs...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. G

    UK Steel Tape Armour and Reduced Neutrals

    Hi, someone has ordered Steel Tape Armoured cable instead of SWA. Can I use this armour as a CPC the same as SWA or not and if so is there a table so that I can check the figures. Secondly, correct me if I am wrong but 3ph with a reduced neutral should only be used on a balanced load ie a...
  11. S

    Bonding Extraneous Structural Steel

    If extraneous structural steel is not exposed does it still require bonding Thanks
  12. 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...
  13. S

    IR testing steel conduit on 1st fix?

    Hi everyone, I'm nearly on my AM2 test and really enjoy the industrial side of things so I thought I'd learn by asking. I recently came across this note about IR testing PRIOR to connection? Can someone just explain how you would test if there was steel conduit and the earthing arrangement...
  14. 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...
  15. 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…
  16. 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)...
  17. A

    which drilling bits for stainless steel?

    I will start my own workshop and therefore trying to know about all the tools i need for an ideal working environment. In my little journey this is what I’ve understood “Right tools for the right materials can help solving a lot of problems” I am looking for special bits for effectively...
  18. 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...
  19. 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...
  20. 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...
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