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  1. bigspark17

    Kva 3phase demand calc

    Hello all, looking for a bit of advice not been asked to fill in a new power supply for dno for a commercial premesis before. Do i put 70kva for a 3 phase supply that equates to 100A 3 phase head? Usually on single phase i put 18.4kva for 80 supply and they always provide 100A head. Thanks in...
  2. bigspark17

    DB to be located away from DNO equipment

    16mm ho7. Kmf with 80A fuse. why are there 2 meters in the external box? Sounds like its a redundant meter or the old ec7 switch over. Id be doing my best NOT to have another external box.
  3. bigspark17

    Ring doorbell power supply

    Customer wants the ring wired in instead of batteries, has anyone else done this? What type of transformer is required?
  4. bigspark17

    Cable calculator

    My old cable calculator sofware on pc is not working “cable mate” dunno weather its my pc or the app? Does any1 else use cable mate, or is it time to purchase another? What are people using?
  5. bigspark17

    Global IR testing on RCBO populated CU

    Why not test N-earth and then test live - earth. What are you gaining/preventing by joining them together?
  6. bigspark17

    Microwave above sink

    The appliance could still drop into a sink full of water even if it was on a sfcu. Whats stopping any other pluged in appliance dropping into the sink or someone running an extension into the bath. You can stop idiots, were not here to prevent idiocy just follow our guidelines and good practice
  7. bigspark17

    Microwave above sink

    Why? Just install a socket!
  8. bigspark17

    Microwave above sink

    your there to install electrics safely not risk asses the whole property. If you start doing that youll never get anything done!
  9. bigspark17

    Scrap prices?

    I believe around £1200 a ton
  10. bigspark17

    Recommendation needed for basic PIRs and exterior floods

    Diamond floodlights are very reasonable with a low return rate. They also have the overide core which is very handy :)
  11. bigspark17

    Submersible lighting in a stream.

    yes it is
  12. bigspark17

    Submersible lighting in a stream.

    Has anyone done any submersible stuff recently. Have a house to do now which has a stream running below part of the decking/sunroom. The client would like some lights running up and down the stream. House is at first fix stage. The under stairs cupboard is pretty much above the stream so can put...
  13. bigspark17

    Any advice on rewires?

    I find it peculiar that so many chase and box before wiring? You cant alaways get the cable down where you want it might be a joist or an enexpected obstruction above. @happyhippydad isnt there someone in your local community like a semi retired person that could just give you a day help here...
  14. bigspark17

    Light Switches in Bathrooms

    Hi. Why not use a wireless switch using RF to speak to a receiver. Quintec or click smart to good stuff.
  15. bigspark17

    Next date 'ASAP'

    have to disagree because the customer wouldnt care about that they would only see oh it doesnt need testing for another 5years. I see no problem putting unsatisfactory. Then relabelling it after remedial works.
  16. bigspark17

    Next date 'ASAP'

    I will always write ‘unsatisfactory’ following a EICR with any c1 or c2’s. I cant justify writing a next test date on the label until the installation is satisfactory. Its more likely to get noticed and something done about it rather than writing 3 months or something daft like that!
  17. bigspark17

    Choosing an electric towel rail element

    still not a thermostat. but i also like the greenbrook timer as its dificult to find timers with a easy boost function.
  18. bigspark17

    Choosing an electric towel rail element

    Make sure you fit a thermostatic type. Not the bog standard ones.
  19. bigspark17

    Sub main 125m in16mm with 80A 1361 over current device

    Correct. Although i feel these figueres should be revised what with the market now engrossed in LED lighting.
  20. bigspark17

    Sub main 125m in16mm with 80A 1361 over current device

    Why 2% not 3%?

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