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  1. T

    AC Single Phase Motor - Expected Amp Draw

    Hi Forum Members I have a 4 pole single phase 240VAC 315 watt motor from a central heating heating system that I think is bad. It's the room fan inside the squirrel cage that sucks / pushes the air past the heat exchanger It seems to run but very slowly. I think it's bad. That said, there is...
  2. K

    What did I do wrong when installing this single pole smart switch?

    I replaced a single pole to exterior lights with a smart switch. Next to it is a 3way to my foyer light. The foyer and the smart switch to exterior works. However I seem to have killed the power to an exterior outlet. In order to get the switch to work, I had connect the red switch pigtail...
  3. popeyedwazza

    UK Can you have 3 13 amp fcus in series on its own radial 16amp with each supplying single socket

    Hi everyone. Im new here... I need advice on wether it is safe and okay to have 3 × 13amp fcus on its own radial with each having single socket to supply a.... 1st) fcu at 13amp-fridge/freezer 2nd) fcu at 13amp-washer/dryer combo 3rd) fcu at 13amp-Dishwasher They will be protected by 4mm...
  4. UKMeterman

    Single wire earth return used at 500KV

    Hi, you might like
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. J

    Changing a 3 gang switch box to a single gang switch box

    I just changed out a 3 gang switch box in my bathroom to a single gang box with a 3 single pole switch. It works fine but wondering if I need to worry about overheating. It is a deep single gang box which just fits in the 2 x 4 wall but there are 5 wires going into this box. Do I need to get a...
  10. 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...
  11. 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...
  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. 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...
  14. J

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

    Will this work?
  15. 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...
  16. J

    Double pole or Single pole + Neutral for domestic extension supply?

    I've been carrying out quite a few domestic extension first fixes recently which involves providing a power supply installed from the properties mains. I have always just Henley blocked from the properties main consumer unit tails into a 63/80/100A BS-88 fuse Main switch board then from the...
  17. J

    UK Can I put a single socket next to a radiator?

    Hi guys, I am a DIY electrician and I need some electrical safety advice. Due to space constraints, I am looking to potentially put a single switched socket next to a wall mounted oil filled radiator. My concern is the heat from the radiator melting the proposed socket creating melting plastic...
  18. Peter55

    Earthing question - three phase into main building, then single phase to EV charger

    Hi there, new to the forum and in final stages of completing C&G level 3; need to complete design project to complete. Am struggling to get my head around how to draw up correct circuit diagram showing EF Loop path for EV charger where initial supply is described as 'three phase TNCS' feeding to...
  19. H

    Dedicated double socket or single sockets for washing machine and a tumble dryer.

    Existing double gang socket in the corner of a kitchen on a dedicated 12m length above ceiling 2.5 final circuit to CU, was used for a WM and a tumble dryer protected by a 32amp MCB. I wish to keep this arrangement but on lifting floor boards above ceiling I noted entire run of cable/s was not...
  20. P

    Single oven installation? So confused please help

    Hi all and please forgive me if this has been asked many times before, I'm trying to purchase and get installed by one of the national electrical appliances retailers a single oven but I'm getting slightly confused as to what they are wanting to charge me for? So here my supply, 32amp from...

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