single

  1. 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...
  2. 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...
  3. 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...
  4. F

    Single phase motor reversing with brake and centrifugal switch

    Hi guys, Been given a motor and associated control gear within a panel that has been water damaged. This motor has 3 windings U1/U2, V1/V2 and Z1/Z2, 1 pair of wires for the brake and 1 for cut-out I believe. In the process of wiring a new panel up for it and it know its a long shot but can...
  5. B

    New member fitting single oven flex

    Hi all just here as an enthusiastic learner/diyer to gain knowledge and help on bits and bobs At the moment I am confused I have a new single electric oven totals 2.2kw, I have 6mm cable from mcb on a 40amp breaker on dedicated cooker point on board The oven has 1.5mm flex no plug and the...
  6. 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...
  7. S

    ac single phase motor won't rotate even by hand

    hello!! hope anybody can help me. I have an AC single phase 220v 1.5HP motor that won't rotate when plugged in even when I try to do it by hand, it is kind of magnetically locked, and just hums. when unplugged, it rotates easily. I tested it with a new capacitor that I'm 100% sure is OK (I took...
  8. mikeatron

    single phase motor reversing itself

    evening all ive got a single phase AC fan motor running normally however occasionally on start up it starts in reverse. i have 4 no fans, and this is happening to 2 occasionally. now these are in a fresh air chambers and i was starting to think that the airs blowing over the fans causing reverse...
  9. farmerfa

    Putting light fixture with 2 bulbs on a single bulb ceiling outlet

    Hi all. We have a light fixture that has single bulb fixture on ceiling. I want to change this to a 2 bulb fixture. Is this just as simple as removing the existing fixture and wiring the 3 into the double bulb one? I see black/red/greenyellow wires currently attached. Not so good with...
    • farmerfa
    • Thread
    • bulb bulbs ceiling diy fixture light outlet putting single
    • Replies: 2
    • Forum: Lighting Forum
  10. Poolworx

    Single Phase 2 Speed Pool Pump Motor Question

    Hi everyone I came across a single phase 230v 2 speed pool pump motor the other ay and became obsessed with how they work and are internally connected , but cant seem to find a diagram/pic of the anywhere. I decided to do my own from what i found on line My question is have i interpreted the...
    • Poolworx
    • Thread
    • motor phase pool pool pump pump question single single phase speed
    • Replies: 20
    • Forum: UK Electrical Forum
  11. HoneycombEchoRomeo

    Kitchen Appliances Single FCU to Multiple Appliances

    Hi Guys, I have the walls open (removing tiles from dot and dab walls fml...) Can i connect a single FCU 13a to both my integrated Fridge Freezer and Microwave? or would i need to have two seperate FCUs for this? or would i need a 20a DP Switch? wiring inplace is part of the ring main...
  12. 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...
  13. 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...
  14. N

    Bringing single phase off three phase board

    Hi all, new to this thread and just looking for some views. I have today attended a industrial unit which is being converted into small individual offices. An electrician has previously been here and has taken 3 individual sub mains from the existing three phase consumer unit to single consumer...
  15. J

    3 phase rotary inverter from single phase.

    My 3 phase cnc lathe is rated at 27 Amps on the manufacturers website. When I mentioned that I want to run from a single phase via a rotary inverter I was told that it will need 27 A per phase therefore 3x27=81 Amps from my single phase. Is this correct? I reckon the machine is about 5hp.
  16. T

    Is there such thing as 4kW, 115VAC , single phase equipment?

    Hi, We are being asked to make a power supply for a Bass amplifier......its 4kW, from 100-265VAC. Does that sound right? Woudlnt 4kW from 115VAC always be done with three phase? (this kit is for mulitple different countries)
  17. i=p/u

    Single phase motor humming and heating up.

    Hi, morning EF. I was looking at a single phase motor yesterday attached to hydraulic pump for cardboard bailing machine that seems to be temerpemental with stop and starting and making humming sound. I checked the contactor was working first and voltage was going to motor, I clamped the cable...
  18. C

    Changing a single outdoor switch plate to a fountain to a combo with an outlet

    The previous owners of our property had non in ground rated electrical hardwired into the basement from an outdoor submerged pond fountain. Needless to say it was causing issues. I disconnected and dug up the corroded wiring which went into a switch plate on the outside wall. Layed down new...
  19. Anthony Deakin

    Single Gang Light Switch

    Hi all, I have a 1.5mm twin and earth cable. Fitting a loft light. I have connected the cable to the original lighting cable in the loft with no issues. I have looked at the single gang light switch and has L1 L2 L1 L2. So how do I connect the feed into the light switch and the cable again twin...
  20. bigspark17

    Ramp up down switch single phase motor

    Weired one. Looking for info or past experiences. Called to a garage very old ramp 40+ yrs old not working. Very old switcc looks like its burnt out, so before i take on finding a replacement i wanted to make sure motor ok. So bypassed up down switch and turned on isolator. (Single phase motor)...
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