supplies | Page 3

supplies

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  1. J

    Wet Riser Pump back up supplies

    Refurb on an existing building where new wet risers are going in: Where do changeover switches for back up supplies for wet riser pumps have to be installed? Can they be installed at the main switchboar with a single cable to each pump or does the changeover switch have to ne local to the pump...
  2. J

    Correct cabling for flat consumer unit supplies

    I'm after some advice please guys.. I've got a job where the builder is converting a shop and flat above into 3 separate flats. There is currently just a 100a single phase supply into the shop on the ground floor. I have requested a new three phase supply to be installed, which will be located...
  3. A

    Cabin temporary supplies

    Hi,just looking for some clarity on feed to 4 site cabins situated 170 metres from main builders supply (single phase). Looking to work out diversity for cabins with 240v plug on outside but not seeing what to class them as- 'stationary equipment'? Tried getting size of cable needed but making...
  4. R

    Underfloor heating supplies

    I would like underfloor heating in the bathroom and also in my kitchen. Would i be correct in think both UFH would need a 20a isolator switch with a separate supply and not just part of the ring/spurred off a ring. All help appreciated thanks
  5. J

    Uninterruptible Power Supplies (UPS)

    For a 240 AC volt house, sometimes the light goes off, to prevent my modern TV (54Watt), DVD player, Playstation, Xbox from damage. Can you please recommend a good UPS. Is it just a case of adding the wattage of each device together. I have 5 rooms each room contains an air-condition, TV...
  6. bigspark17

    2x supplies down swa

    does having two circuits travelling down one swa directly condradict a reg.? Circuits in question are 2 63A submain down 1x 4c 16mm swa
  7. R

    shower supplies

    We have been asked to supply 2 new 10.5 kw showers off a memshield 2 3 phase DB. Looking at prices for rcbos we are looking at 90 a piece for mcb and pod. Anyone got any cheaper suggestions? With the highest mcb being 63a sph I cant run an rcd main switch db off for these./
  8. D

    Catering trailer electrics

    My neighbour has built a catering trailer, which is mainly gas for the appliances that he intends to use, Bain Marie etc. He has asked me if he could have a couple of double sockets fitted to it and I said I would look into it for him. Section 717 would be applicable for the electrical...
  9. T

    Why do desktop power supplies and GPU's keep blowing?

    I'm not an electrician but I some clever heads together - http://www.electriciansforums.co.uk/threads/im-not-an-electrician-but-i-some-clever-heads-together.117521/ Some of you may remember the above thread where the guy had umpteen blown power supplies and GPU go into melt down. I have now been...
  10. Pete999

    Pete's Videos For new trainees having difficulties understanding 3 phase supplies

  11. D

    PLC Power Supplies

    Can anyone tell me two separate ways of powering a PLC (I'm guessing that part will be mains supply and battery) but more so the advantages and limitations to both?
  12. S

    Edfirst, School Supplies Service

    DO NOT SIGN UP WITH THIS COMPANY. Everyone I phoned that was registered on their site said they received no tenders, or not in their area. I signed up due to their pressure sales tactics and then cancelled the next day. They are trying not to give me a refund on the basis of no cooling off...
  13. J

    Multiple 1PH Supplies into 3PH board

    Hi everyone, I'm a Carpenter managing a shop conversion and am wondering if it is possible, legal and sensible to utilise the existing 2Phases plus bring in a third 1PH supply (assuring they come from different phases at street level). It will be potentially cheaper and easier than bringing in...
  14. Dan

    QVS Electrical Supplies

    QVS Electrical Supplies opened its first branch in St.Ives Huntingdon in October 1994. Steady expansion followed, with the opening of a further 12 branches serving trade and diy across the south east. Nationwide, our customers have also enjoyed the same competitive pricing, quality products and...
  15. Dan

    UK Electrical Supplies

    UK Electrical Supplies - Electrical Wholesalers for Trade and Private Customers UK Electrical Supplies, the UK's number one electrical wholesalers online. We pride ourselves in being the best discount electrical wholesalers online offering a wide range of electrical products and accessories. We...
  16. F

    Are these 2 AC/DC power supplies equivalent?

    Hi, I'm trying to install some Smart LED lightening in our kitchen. We already have wiring available to us (mains supply via a light switch). I've bought Osram Flex lightening - which comes with a plug in power supply that converts the 230V AC to 12V DC. My question is can I use the Mean Well...
  17. Brightspark2

    Generator.

    Simple specification: A machine inside a small factory is to be supplied from a generator set. This will not be linked to the main supply. The generator is to supply the machine only. Im looking for regulations and advice on this. Ive looked through 515 and in particular 515.7.1, a generator...
  18. M

    2 separate supplies to 1 Piece of steam room equipment

    Was originally asked by client to put a 6kw supply in for steam room on first floor which we have done client then brings out equipment and asked us to wire it in, Turns out it's for a 3 phase supply as the client is Dutch it's from Holland an no instructions in English After speaking to...
  19. F

    Electronic Equipment and IR testing. What component causes low reading to earth?

    Insulation resistance testing with electronic equipment between L-N connected together and earth. Switch mode power supplies have EMC capacitors between L - N - E. However, when you test for IR you are using DC. Capacitors block DC. What is there in some electronic equipment that allows a...
  20. rolyberkin

    Three Phase Power Supplies

    Hi All I have no experience of working with 3 phase (over and above jointing HV stuff!) when I run a 3 phase cable for say three motors each rated at 16amp, is it normal to run one suitably sized cable as a radial to pick up all three motors or should they be separate runs?

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