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  1. B

    Main Supply Conductor question

    the only current ratings i can find for tri-rated are for installing in free air so trunking seems out,you could use tray with parallel feeds to both boards all in trefoil or equally spaced
  2. B

    Main Supply Conductor question

    hmm seems like they don,t list cables above 630mm in trunking wonder why
  3. B

    Main Supply Conductor question

    the cables fed off the 1000a acb should be about 800mm / 1000mm singles or 2 x 400mm singles in parallel per phase to each panelboard (not checked) what size are the installed cables and what size is the trunking (hope there,s no bends) but i could be wrong
  4. B

    Smart meter project is delayed

    have you seen the size of them look to be about h300 w250 d100? approx
  5. B

    galv conduit in bathroom

    could use it as a towel rail
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    rf thermostat

    which danfoss have you got
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    underground lighting cables

    is the lampost cast in concrete or is it in a sleeve/large pipe thats cast in concrete
  8. B

    wind up IR testers

    i did a spell in maintenance 1962 as an apprentice and i can remember winding one of these connected to a wheatstone bridge testing the windings on motors (my arm aches just thinking about it )
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    Connecting 2kW generator to distribution board

    it was an old fare ground generator on wheels can,t remember the size about 100a per phase 35mm 4c swa (the company was a M&E contractor ) it was early 70s i think
  10. B

    Connecting 2kW generator to distribution board

    been there and done a similar set-up (they wouldn,t buy a c/o switch warned them it would bite them back ) but they insisted only 1 man would do the switching, went ok till the 1 man wasn,t there and the power went off end result blew suppliers fuses had to get replacements from lawsons and c/o...
  11. B

    Swa min level above floor? Yes or NoA

    what height did you want to run it
  12. B

    regulations regarding install

    seems to be about energy conservation (lighting & controls , hvac ) but special process ltg. & emergency ltg. are exempt strange?
  13. B

    No earth on ring main.

    i think the 25a refered to is from a high current stand alone tester (like a clare)
  14. B

    No earth on ring main.

    never seen a house done with screwed conduit ie. couplings & bushes ect. did a lot in 60s with split conduit with rubber gromets on the ends so i doubt if you could rely on conduit for good earth
  15. B

    Trouble shooting?

    so the thermal protection are the 2 symbols shown on each motor wired in series
  16. B

    Trouble shooting?

    ok but got to ask where are the overloads
  17. B

    Trouble shooting?

    are we seeing enough of the drawing to find the problem?
  18. B

    5kw immersion time clock?

    whats wrong with fitting a contactor,is the element single phase
  19. B

    Anyone worked with AWCO cables before..

    i think the awco company is/was in swansea, we used some in sheffield in the 60s most ends were crimp lugs some of them bi-metal but did solder some lugs (special flux & solder ) there is data on aluminium cable in the back of the regs book
  20. B

    apprentices these days

    i can remember 1 who had problems fitting conduit box lids because of the short screws and the length of his finger nails??
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