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  1. M

    Solar Maximum kW anyone has on single phase?

    I (well, the MCS installer) obtained approval under G59 back in 2015 for 11.5 kW of grid connection on a single phase. 12kW of panels into two 6kW inverters. I'm in a fairly remote area. Not aware of any other solar arrays feeding into my local pole mounted transformer. I'd now like to add...
  2. Backtoschoolelec

    Wiring single gang/usb into a FCU to external decking lights

    hello all have a couple of questions re-some decking lights. I have fitted by Electrician around 10 years ago, He’s spured off an existing single gang socket and added in an FSU to control the lights. had nothing but problems with a is a lot to do with either garden creatures, chewing through...
  3. J

    Single or three phase? Whats popped?

    (Thought I'd already poost this Q, but I cant see it, so I'll try again) We have some work going on in one of our buildings atm. On of the chaps has drilled into a cable that was buried in a wall in a fairly random location, knocking out the power to one of the flats (and giving him a nasty...
  4. T

    Single pole rotary isolator

    Hi everyone, I have moved into a property with a 63a single pole rotary isolator controling a inline water heater. Is this safe? Surely it should be a 63a two pole isolator switching both the live and neutral? Any advice would be much appreciated. Thanks.
  5. Q

    Possible to run a 3 phase 30hp 230/460 90 amp Dual rotary screw air compressor on 220 single phase?

    I have a small mechanics shop in a rural area with no access to 3 phase. I picked up a air compressor cheap and knowing at a min. I will need a phase converter. I don't think a VFD or a static converter can do it. Is it even possible to run a 3 phase 30hp 230/460 90 amp Dual rotary screw air...
  6. U

    32amp Single phase rackmount distro

    Hi, Just someone setting up a mobile soundsystem for small pubs/clubs with a few questions about a distro. People IRL can't seem to answer my questions and the pro-sound light forums generally get too much conflicting information...
  7. I

    Advice needed on Immersion Heater moving from dual to single tariff supply

    Until last week I had a dual tariff electricity supply with a cheaper overnight tariff. This was good for the storage heating, but now the storage heaters are gone we've changed our electricity to a single electricity tariff. There are two consumer units with the off peak fuseboard supplying...
    • i3_happy
    • Thread
    • advice heater immersion immersion heater moving needed single supply tariff
    • Replies: 2
    • Forum: UK Electrical Forum
  8. P

    cable calculations single phase / 2 phase

    Hello all Just doing some cable calcs for a shepards hut site, the site has an incoming supply of 2 x 250a single phase supplys, was hoping to run a 4 core down from incomer to a board then split off to each hut. Do i have to work it out on single phase 230v or can i work it out on 400v
    • pjlelec
    • Thread
    • cable cable calculations calculations phase single single phase
    • Replies: 5
    • Forum: UK Electrical Forum
  9. roryob44

    T12 ballast help single lamp

    My 4’ old ballast burnt out its and old 70 one weighing a ton anyways I purchased a new t12 ballast but this one has 2 red 2 blue and 2 yellow old on didn’t have yellow will this work I was told to cap the yellow and run the red and blue the way they were in old ballast connect power and be all...
  10. W

    If you have 3 single core cables in conduit for a singular circuit would this be classed as bunched?

    Hi there, I'm Currently doing my design calcs for my college project and doing the actual Zs calculation. Formula is Zs= Ze (or Zdb) + (R1+R2) Then for (R1+R2) you find the (R1 +R2) per metre value in the On site guide appendix i - i1 , which for me line and cpc are both 1mm so its 36.20 . I...
  11. Calebp43

    Single to 3 phase converter

    Been called to help a friend who can't get anyone to look at his car lift until next week and it's stopping him from working. I said I'd have a look but never work with 3 phase converters so I'm not very clued up. He bought a car lift and it doesn't want to turn on. He saw it working fine before...
  12. J

    3 Phase to single phase

    Hi, As a DIYer I`ve quite a bit of wiring up domestic house single phase experience but no 3 phase experience. So I have been offered a two post car lift which currently operates of off a 3 phase supply. I have a brand new single phase 3hp motor which I believe will run the lift but I assume I...
  13. K

    Ceiling rose with 3* single cores

    Hello, I had the floor boards up today and noticed that the ceiling rose for the room below, was wired with 3 singles. Probably the whole house is like this, this is just the first one I've seen. The house is a 1970's house so quite old with regard to the wiring, but I'm really curious what...
  14. C

    20kVA single phase generator grounding question

    How should grounding be made to a 20kVA single phase generator set feeding a domestic property via a manual change over switch? At the generator's alternator neutral is bonded to earth. The generator will be some sixty feet from the mains input box of the property fed by SWA cable. The...
  15. J

    Need a little help, can I add a second PIR with a single core line in (live)

    Will this work?
    • Johnny M
    • Thread
    • core help little live pir second single single core
    • Replies: 4
    • Forum: Lighting Forum
  16. G

    RCD type- A or B to supply single phase UPS

    Been looking at what type RCD should be fitted for small single phase individual UPS. Looked at Hager rcd selection guide under type B has 3 phase UPS but nothing for single phase . https://hager.com/uk/support/regulations-18th-edition/selection-of-rcd-types I am hoping type A will do ...
  17. G

    Adapting a 3 phase industrial machine to single phase

    Hello, I am hoping this is in the correct forum. To start, I acquired a film processing machine that runs on 3 phase. Now before getting the machine I fully understood it's power requirements and the cost of getting 3 phase installed at my house. I figured as processors are mostly a few...
    • Gareth Blackstock
    • Thread
    • 3 phase ausie elec industrial machine phase single single phase
    • Replies: 19
    • Forum: Australia
  18. P

    3 Phase meter with single phase imbalance

    We have two single phase heat pumps on two phases of a three phase supply the third phase has an immersion heater. The heat pumps are set up as master and slave with the master doing virtually all the work (22000kwh/an). We also have a three phase 15Kw turbine. generating 45000kwh/an Our...
  19. Calebp43

    Neutral current in a single phase installation confusion

    In a 3 phase system the neutral carries current that is unbalanced. Okay. So in a single phase domestic household the neutral carries the same current as the live otherwise the RCD will trip. So does that mean if we have a perfectly balanced 3 phase system then if I go to one of the phases and...
  20. S

    Powering single phase motor from 3 phases

    Hi, this might be an easy question, but i need to power a single phase motor situated about 300 meters away from my MCC. Do I just run 3 phases 415VAC cable to the motor in the field and just connect one live phase and the neutral to get the 240VAC? if that's the case then what do I need to do...
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