steel | Page 9

steel

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  1. D

    Conduit Support

    Looking for some advice if anyone can help. I've been asked to install sockets in a new build business unit. The company deals with software imaging - lots of computing power but no machinery, tools, etc. The place is pretty much a standard build with a number of heavyweight vertical RSJ's...
  2. B

    what light switch is this?

    Hi guys, can you please tell me what this type of switch is called as im looking for a replacement in the screwfix catalogue and cant find one http://www.flickr.com/photos/39955962@N08/7494356112/in/photostream i think is a 2 way, 4 gang switch (has 2 seperate switches on the front. 4 ports...
  3. G

    Ventilated trunking

    I'm working out a plan a house rewire where the supply comes into the garage. The trouble is that I dont want to just clip cables to the wall, the garage is not plastered so that eliminates the possibility of sinking the cables below the wall surface and placing the cables in conduit or...
  4. E

    Crabtree 4 gang brushed steel face plate??

    Hi all, Got a customer who has a crabtree 4 gang grid with a white face plate which they would like changing to brushed steel. I thought that it was possible to change just the face plate but seemed to be having difficulty locating one. Does anyone know if crabtree make one or any other make...
  5. J

    Best Hole Saws For Cutting Stainless Steel

    Hi guys, Quick question, I am looking for a hole saw that will will cut stainless steel again and again? For example, don't want to cut it once and not be able to use the hole saw again? Also, how much do these types of hole saws tend to cost? Thanks :-)
  6. J

    New build with steel webbed joists

    Hi Guys, Just had an email asking me to quote to wire some new builds, it said on the email that the Joists are Steel webbed and the cables will obviously need to be secured and clipped along these. How do you guys do this? is there a special type of clip or do u use a bit of all round band or...
  7. B

    Steel trunking capacity

    Hi Folks, Not been here for a while, hope everything's still good! Well, here it is; I'm trying to find the capacity for 75mmx75mm steel trunking. I'm pretty sure it's 45% full it should be, I' having problems proving it though! Can anyone tell me the reg number or tables referenced? I've...
  8. M

    Metal Conduit

    Hi, I have to use metal conduit in a domestic installation (wearhouse appartment). Im obviously going to have to do some conduit bending etc and I was hoping someone could shed some light on which conduit to use. The heavy gauge galvanised steel conduit looks a bit too heavy duty and looks...
  9. R

    steel metal beam in pit

    Hi guys Question would steel runners in a vehicle inspection pit require main equipotential earth bonding?? the pit is all concrete construction except for these metal running beams used for the wheel jacks – doing a test I get 0.01 MΩ Although there is no simultaneously accessible...
  10. S

    Arrrghhhh! I have a practical assessment and im struggling with steel conduit?

    i have a practical assessmet coming up and the problem im struggling with is the steel conduit. Well its a double set out of the C.U and its roughly 15-20 mm from back of conduit to the wall. im not using an angled ruler, the main problem i have is where do i put my second mark on the conduit in...
  11. S

    Fixing panels to a barn with a concrete fibre roof.

    Hi Guy’s We have a contract to fix 50kW of panels to a barn roof. Having problems finding a suitable fixing/ racking systems to use without having to build lots of support under the roof. Eaves to ridge is approximately 14meters with 9 Z shaped steel purlins spaced equidistant between eaves...
  12. J

    2 way lighting fault - in steel conduit

    I was looking at someone's hall lighting the other day as neither of the fittings work. It's 2 way with 2 fittings in an apartment all wired in singles in steel conduit. There's power to & leaving switch A but no power at either fitting or switch B so there must be a cable break somewhere, only...
  13. B

    looking for a apprentership around manchester area

    Hi I'm currently at the oldham collage studying electrical installation level 2 I am doing my 206 practical exam tomorrow I'm highly confident I am going to pass. I am quite good in the workshop, I can do ring mains,one and two way lighting circuits of the top of my head I can also use steel...
  14. Mark42

    Large number of 13A sockets in a steel building: Design considerations.

    This weekend I’m installing 20 2-gang 13A sockets around the inside walls of my new 20m x 8m steel building. These are only for small car battery chargers, so total continuous load will be trivial. Plus one fused connection unit (directly in the ring) for the electric shutter at the far end of...
  15. 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...
  16. 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...
  17. 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...
  18. P

    pvc or steel conduit?

    Hi everyone. May have a job coming up in a school where there may be a floor socket needed. The socket is about a metre away from the wall. Not sure if to use pvc or steel as it will be screeded after. Its at a depth of 100 mil. Thanks,
  19. 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
  20. 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...

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