supplies

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  1. B

    Shower circuit design supplies

    Hi all Question regarding shower circuit designs. How so many times I see 6mm t&e cables supplying shower circuits on a 40amp MCB ? So for example if you were carrying out a EICR and you noticed a 6mm t&e cable on a 40amp MCB, 8.5kw/9kw shower would you put this down as a C3 or would you not...
  2. S

    Help Required please

    Hi Guys I recently came across two single phase supplies down the same four core cable, supplied by two separate breakers is there a reg to back this up?
    • Sam2020
    • Thread
    • breakers cable never phase please recently required separate single phase something supplied supplies
    • Replies: 1
    • Forum: UK Electrical Forum
  3. Z

    Coil relay switching 2 power supplies

    Hey, Total noob here so please be patient ? I have two power supplies mains 220v in a type of small cabin/house every day around 8am they cut of the good supply and leave it off for a few hours then turn it back in again. What I would love would be a contraption that switches between the...
  4. T

    Combing two incoming municipal electricity supplies

    I've an interesting problem. I've got an potential client. It is a commercial property that used to be two separate businesses each with a separate 60 Amp single phase electricity municipal electricity supplies to the same building. The one company has gone bust while the other one has grown...
  5. A

    UK 2armours supplies dist board

    Hi, wondering if anyone has seen this before. At a job today and the supply to the 3 phase dust board is 2x16mm armours. One has three phases in it the other armour has the neutral and earth. Bit rough I think is there any regs on this ? Any help would be great.
  6. A032701

    oven supplies 4mm or 6mm???

    I am often installing two 3.5kw ovens in one kitchen which amounts to 30amps. I cant see that there are any problems with supplying them both with a single 4mm on 32mcb, (installation method c) i have normally supplied it in 6mm but just wondering really. is it just bad practice, in case they...
  7. HappyHippyDad

    Working on electrics with 2 supplies.

    I have little knowledge of PV. When working on circuits supplied by a domestic CU, is it fine to just have the main switch off in the CU or should you be isolating the PV as well? The stickers all over the CU's in this example all say to disconnect both supplies.
  8. M

    Using low voltage lamps and Selv power supplies in domestic livghting

    Hi, I have a ceiling rose which doesn't have an earth wire and I want to connect a light fitting which requires an earth connection. It's not possible to rewire the ceiling rose at the moment so I am considering the possibility of using a low voltage (12 - 85 volt DC) E27 led lamp connected to a...
  9. C

    Main Earth Bonding (two supplies)

    Large house with x2 power supplies/ service heads. first supply 3 phase TN-S located in a pig of a place and is furthest away from the gas and water entry points and meter positions. Second supply is a single phase TN-S located only a few meters away from the water and gas entry points to the...
  10. S

    Three Phase Power Supplies

    Hi I'm new to the forum & currently still learning the trade, would someone please be able to clear this up for me as I keep getting conflicting information, my understanding of three phase power supplies is, if you have a standard system in place say TPN supply & 3 x main cut out's, fused at...
    • Spark2019
    • Thread
    • phase power supplies three three phase
    • Replies: 6
    • Forum: The Welcome Forum
  11. cliffed

    Temporary building supplies again

    just wondering how you guys,install temp electrics to portacabins Seen a lot of installs on sites & at schools where I don’t think it’s correct. Mainly earthing,& earthing conductors,or am I being over cautious,cheers.
  12. rolyberkin

    Temporary Builders Supplies

    Hi All Has anyone recently installed a temp supply for either UKPN or Western Power? Both for single property developments. I am interested in what structures are appropriate, cannot get hold of them until next week now.
  13. C

    Quantum Heaters Dimplex Wiring supplies

    Hi all, Just wondering if anyone had fitted many of the quantum heaters with dual supply. Im looking at a job to fit a few and wondered peoples thoughts on spuring off the ring final circuit for the 24 hour supply to the heater (Rated at 1.5kw) via a fused spur? Also does anyone know if there...
  14. D

    LED strip lighting, DMX decoders, power supplies, controllers....help!

    Hi all, I'm not an electrician so I need help! I thought this would be a fairly straightforward job but there's so many options, I don't know which to choose. Basically, we have boxed around the edge of our lounge to allow for downlighters and LED strip lights to reflect off the ceiling. We...
  15. 7

    Why would my shower have 2 supplies

    Planning my consumer unit change ready for my assessment in a couple of weeks. Looking at the board - and note i've not investigated any further i seem to have 2 40amp CB's labelled Shower front and shower back. Both are rated 40amps. Now i only have one shower and i cant see there ever being...
  16. Marvo

    Power Supplies for LED Driving

    Marvo submitted a new resource: Power Supplies for LED Driving - Power Supplies for LED Driving Read more about this resource...
  17. N

    Flat Submain Supplies

    Looking for some advice on the best way to supply a 60amp submain to 12 flats which are to have their own meters within each flat (maybe) and who is responsible for doing the work. The project is a large ex club not a typical Block. I imagine the new 3 phase supply will be in to a ryeland...
  18. J

    2 supplies in 1 property

    I carried some work out today in a property in a block of flats, just installing a fan in a bathroom. whilst carrying out some tests I noticed an MCB in the DB marked coil. After some investigation and discussion with the owner it sounds like (I can't be certain) This MCB feeds a contactor in...
  19. 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...
  20. 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...

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