protective

  1. W

    Main Protective Bonding Conductor, Where To Connect

    We are testing a very large production plant with multiple Air Handling Systems with multiple ductings fed from each system, all systems are fed from the same sub-station package, would we have to connect to each ducting service to satisfy a "tick in the box" under services bonded, we have...
  2. E

    does swa need additional protective conductor

    I need to work out if I will be required to run a separate protective conductor along side the swa cable I'm going to install. The cable is a sub mains feeding a 3 phase db panel in a large workshop. The cable is going to be a 50mm 4core 120 metres steel wire armoured installed in a underground...
    • eamonn1983
    • Thread
    • additional conductor protective swa
    • Replies: 1
    • Forum: UK Electrical Forum
  3. A

    Protective conductor size?

    Hi In commercial location I need to run 8 individual RCD protected circuits to 8 D/Skt outlets, each run is in 2.5 singles in plastic conduit about 20m max in length. My question is can I run a single cable earth ring to each skt and if so what size should it be, Worst case is all 8 skts...
  4. A

    Main protective conductor/bonding upgrade

    Asking this question as i have recently finished 2330 level 3 at college and also passed 17th Ed and i dont have a huge amount of practical experience. I've been asked to do a bit of work for a friend of the family - outside light and add sockets to kitchen. Am I correct that if the main...
    • alexknight0602
    • Thread
    • main protective upgrade
    • Replies: 5
    • Forum: UK Electrical Forum
  5. A

    Main protective conductor/bonding upgrade?

    Just recently finished 2330 level 3 at college and also passed 17th Ed. I've been asked to do a bit of work for a friend of the family - outside light and add sockets to kitchen. Am I correct that if the main protective conductor and bonding are not up to the latest regs then they have to be...
  6. jeffducati

    Protective measures for fault protection on fused isolator

    Hi all new isolator through 200amp bus bar section controlled by 200amp isolator and fused at origin at 400ampincomer no breakers very old system needs panel thats the hard bit they wont spend money and they work 6 days 20 hours a day. so what would you put in the box headed protective measures...
  7. R

    Supply protective device?

    Hi Guys, when filling in this part of the form on an industrial EICR, would I have to contact the DNO for this info as the fuses are on the pole outside the sub station? Cheers
  8. N

    Question regarding PFC on a sub board.

    Hi I am trying to carry out Prospective fault Current (PFC) test on a sub board that that is RCD protected and is fed by a main board. My question is how to carry out this PFC (short circuit or earth fault) on the sub board? Do we put the Main switch off in the main board and place the line...
  9. F

    main switch versus OPD

    HI ALL whilst completing certificate on pirform having installed a shower consumer unit with a 40A 30ma rcd and mcb nominal current rating of main switch in relation to overcurrent protective device (ie) main switch is rated aty a lesser value than main over current protective device, supply...
    • foghorn
    • Thread
    • device main main switch other protective shower switch
    • Replies: 17
    • Forum: UK Electrical Forum
  10. Tuttle

    Minimum protective conductor size

    CU replacement ... existing ring mains (on 30A 3036 fuses) are wired in 2.5mm T&E with a 1.0mm cpc :sad_smile: I'm looking at Table B7 in the OSG which seems to say to me that the minimum protective conductor size is 1.5mm for a fault level up to 3kA on a class 3, 32A breaker. I've got a max...
  11. Rockingit

    RCD and bonding for pools/saunas

    Out on site and somehow all the books have walked out the van! Could someone do me a favour and look in the BGB and tell me if bonding is exempted if RCD is in place, and whether the RCD needs to be 2p or not? Not even sure what there may be to bond yet! Cheers muchly. R.
  12. M

    primary overcurrent protective device.

    Morning all Eicr asks for characteristics of primary overcurrent protective device which lets be honest sounds straight forward but what if you have 3 phases with 3 separate 300 amp 1361 which supplies a load of other 80 amp 1361 fuses which then supplies your single or 3 phase db which fuse...
  13. C

    what to put on cert for Supply protective device characteristics

    just finishing of a rewire and ready to fill in the eic cert, at the moment the supply as 60A with 16mm tails from head to meter, the dno are coming out to replace it all due to bitchumen leaking from head but they said it might take up 6 weeks, so do I have to put on the eic what it as now and...
  14. S

    Protective case for iPhone 4

    Can anyone suggest a protective case for the iPhone 4 which actually works and stops the penetration of dust / drops etc?
  15. G

    main protective water bond??

    Hi. Jst on with a rewire at the mo. Did main incoming service bonds and now found that next doors water stop tap is in the cellar with about 3 meters of copper pipe in the property. U think this should be treated as a main protective bond? A supplementary bond? Or none at all? Thanks
  16. J

    Supply Protective Device Characteristics - Flats

    Hi , I am have recently installed a new shower circuit in a flat which is in an block of around 20 flats. The main service head is a 3 phase 4 wire that goes into a sub board that distributes the flats. What information needs to go on to the EIC supply Characteristics? (by the way sub board is...
    • jat01
    • Thread
    • device flats protective supply
    • Replies: 3
    • Forum: UK Electrical Forum
  17. T

    Protective bonding ommitions

    Hi can anyone tell me what metal parts of a house or out building (garage/annex) either structure, building materials, services(water,oil,gas) or electrical are omitted from protective bonding please.
  18. P

    Zones for main protective bonding

    Hi, been a lurker on this forum for a long time, but this is my first post, doing some electriclal work which i will be using for my niceic assessment, need to run main protective bonding to the gas meter which is in a unit underneath the kitchen sink, the only way I can see is to chase in by...
  19. O

    csa of protective conductor for swa cable

    Hi Guys, Just looking for some advice. I'm currently installing power to a workshop via a 16mm swa 3 core cable. The question is, what size protective conductor should i use for the swa at the supply end. The length of the run is approx 40 metres. Cheers,
    • omega
    • Thread
    • cable conductor csa protective swa
    • Replies: 8
    • Forum: UK Electrical Forum
  20. S

    Main Protective Conductors - Continuity and Connection Verified - Sighting Clamp

    Are there any circumstances when it might be acceptable to tick the "Continuity and Connection Verified" box of the Electrical Installation Certificate when there is no visual or physical access to the point at which the bonding (normally a clamp in domestic) is applied. If so what checks over...
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