reference

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  1. D

    Application of Installation Reference Method

    Hello All My query is about installation reference methods. Specifically how to choose a reference method where twin and earth cable passes through various conditions when none of the methods seem to fit actual site conditions. Site conditions are domestic situations where I find myself...
  2. HappyHippyDad

    What to put in 'Distribution reference' on forms?

    This is something I've been meaning to ask for sometime. What do you guys put for 'Distribution reference, or distribution reference number' on the forms? Sometimes there is what looks like a specific number on the CU, but more often than not there is nothing to distinguish a particular CU.
  3. Adam_92

    Reference method and type of wiring questions

    wondering if anyone can help me if you have two types of wiring codes and reference methods on the same circuit what do you put down on the schedule of test results.. Eg. Swa mounted on cable perforated tray feeding an isolator, then out of the isolator with pvc singles in pvc conduit Type of...
  4. ipd1961

    Quick reference guide for 18th

    Just completed the 18th Regs course and we were given a quick reference guide by the company delivering the course. I have redone it because there were a few typos and here it is in plain black and white or glorious colour
  5. M

    OSG, bonding plastic pipes etc etc

    Hi all Having a thumb through the OSG and on section 4.5 Main protective bonding of plastic services, it says there is no need to bond an incoming service of the service pipe is plastic....thats kind of a given....my struggle lies on the next page; "Where there is a plastic incoming...
  6. haptism

    Reference method for cable behind kingspan

    Hi, been looking at which reference method would be suitable in this case. The cable drops of a ring circuit to each socket are fixed direct to a concrete block wall (using capping) ; kingspan boards are to be dot&dabbed directly to the wall. Im thinking worst case would be ref method 102...
  7. A

    Reference Method Question

    Hi all, I'm not an electrician, just like to understand things for self learning. I was reading about how reference methods will derate the cable. However, either I have some misinformation or I am not fully understanding. Given the example of twin and earth, inside plastic conduit, buried in...
  8. A

    How to calculate the tabulated current (It) for circuits with multiple Reference Methods (A and B)?

    I am trying to select a suitable conductor size from Fig 4D1A of the BS 7671 Book, and am encountering a problem because the circuit does not conform to one Reference Method. The circuit conductors leave the distribution board in wall mounted steel trunking, then run through some steel conduit...
  9. Sparky_marky2

    SWA armour supply to outbuilding, what CSA cable? and Reference Method?

    Hi guys, I am running a supply to an outbuilding that requires a 22m run from the Main CU (in the garage) to the CU in the outbuilding, at the Main CU it will be a 40A MCB supplying an 63ma RCD protected sub board which will then supply: 6A type B MCB for 12 downlights and an extractor fan 32A...
  10. S

    What reference method

    Cables clipped to a brick wall with plasterboard dot n dabbed over them what reference method ? And any proof as ref c says clipped direct but nic inspector says that means just clipped to a wall the rest of the methods says insulation ?
  11. charlie76

    Stramit - Straw Walls - Installation Reference Method

    Evening all. Working on a bungalow at the minute with the dreaded stramit walls. All my new cables have been surface, galv capped and the builder is dot 'n' dabbing over. There is an existing radial serving sockets in the living room which is not being rewired. For those that are familiar with...
  12. L

    Reference Methods??

    Hi there, I was just looking to find out what would be the most appropriate reference method to use. the distribution circuits leave the fuse board in 3 meters of trunking, then onto basket most of the ciruicts at lower lever then come down the wall in conduit which has been pre installed in...
  13. B

    Off grid earthing system

    What earthing system should be used on an off grid install with a solar inverter, wind inverter, battery backup inverter and a 4.5kW floating earth generator?
  14. Arktosik

    Reference methods

    Hi Metal trunking or metal conduit's sitting on tray? What do you think? Thanks
  15. L

    Reference Meathod for Timber Frame

    Hi All Just done my first 2 timber frame New build. What is the reference method for cables installed in Timber frame walls full of insulation >100mm????
  16. S

    2357 portfolio HELP!

    Has anyone done NVQ 2357 portfolio with Ableskills? I'm just starting my portfolio bridge units 311 312 313 314 315 316 317 and 318 but really struggling how to start. It's really hard to understand the concepts of how they put their wording. My assessor doesn't explain it really well :(...
    • sp4rky.
    • Thread
    • cover help! portfolio really reference
    • Replies: 1
    • Forum: The Welcome Forum
  17. N

    Reference method

    Hi guys I'm new to the forum so go easy :). i passed my testing a while back but have only been testing houses, I'm now testing a commercial building and for all the power and lighting twin and earth is used which is contained in basket along the corridors then masonry zip tie holders as the...
  18. D

    Reference methods

    Afternoon all Just wondering on which reference method to choose..The installation is clipped direct everywhere apart from 1 metre of trunking as it enters the consumer unit, I think I know the answer (ref b) but wanted to check. Constructive answers appreciated.. Dave
  19. G

    RCBO earth reference tail

    What is the purpose of the white lead from RCBOs? What does it do?
    • Gardner
    • Thread
    • connection earth functional rcbo rcbos reference testing
    • Replies: 4
    • Forum: UK Electrical Forum
  20. G

    Reference method A & B current rating

    Using IEC reference method A and B for loose wires in conduit a I have derived the following max OCPD and in turn maximum current loading for general use circuits: 1.5mm2: 10 amp MCB reference method A, 16 amp MCB reference method B 2.5mm2: 20 amp MCB (Both A & B) 4mm2: 25 amp MCB reference...
    • Gardner
    • Thread
    • current method rating reference
    • Replies: 21
    • Forum: UK Electrical Forum

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