single phase

  1. D

    contactor single phase L3 used as a pilot light

    Using a three phase contactor but in single phase so just live and neatural using L1 and L2 . Is it okay to hook up a pilot light on L3 terminal so when contactor is pulled in L3 becomes engaged hence pilot light turning on. I dont want to know about aux contact because I will be using that for...
  2. P

    2 single phase meters in series

    I maintain the electrical installation for an old building that is converted into flats. The DNO only owns the transformer and we have a single electricity meter for the whole site. All of the switchgear is ours and the flats have submeters that are also ours (the management company that own the...
  3. B

    single phase to 3 phase

    I have a single phase system that uses 320 amps and 240 volts and I rewire the circuits for 3 phase what size generator would I need and how many amps on each leg
  4. M

    Configuring motor to run off single phase?

    We have got a hydraulic motor/powerpack for leveling legs of a trailer. However this trailer is running off a 15KW inverter, so the motor needs to run off single phase. The motor has come configured for 3 phase, however the motor plate does say it will run off single phase. Would i be right in...
  5. C

    Any Idea why my single phase motor ans speed controller are not working

    HI Guys, I bought this motor and speed controller used and tried wiring as per the diagram on the side of the speed control unit but the motor will not turn on. I am running it at 220v, when plugged in I do see the green led light up. There is not much info on the internet. But I was able to...
  6. M

    how hot can be a single phase motor ?

    Hello! I have a high-pressure compressor equipped with a single phase motor! The motor have 2 capacitors, 1 continuous and 1 for starting, with a relay for isolation . The motor is old, but it's still working! I have changed the capacitors with new ones and the cable too. The motor work ok! I...
  7. S

    3phase surge suppressor connected to a single phase utility supply.

    I am using a 3 phase 4 wire surge suppressor on a single phase 240V mains. Is it still okay or will it have some back feed impact on the mains system?
  8. M

    Single phase but 2 cable in one fuse

    Hi everyone There is a switch board which is single phase, but when you look at the back you will see 2, 16mm cable go to the fuse(red and white). What is that for ? I haven't seen before. And the black and blue cable goes to the service neutral link !!! In Australia 3 phase color is Red White...
  9. R

    4pole isolator on single phase

    Hi, I have been asked to fit a 32a isolator ready for an air con unit and picked one up from screwfix. Unfortunately the one I have is a 4 pole, can this still be used with 6mm t&e or do I need to replace it with a 2 pole. If it can be used do I just use terminals L1 & T2 Thanks
  10. I

    Appliances in single phase property damaged by 415v

    Got an emergency call out from a very worried old lady the other night - the power at her apartment had gone off and the kitchen light was smouldering badly. She'd been on the phone to the DNO (Northern Powergrid), they were telling her to turn the main switch off but she couldn't understand and...
  11. Riatsila

    UK Is double pole switch necessary in this case?

    Hi all A friend bought an extra control switch for his winch so that he'd have controls at upper and lower levels during building work. His problem was that the new switch was single pole while the switch in the original control unit was double pole (both double throw, centre return). However...
  12. S

    Coffee machine wiring 3 phase on single phase circuit

    This coffee machine is three phase model number sm 105e It’s three phase with 3 brown cables one neutral and earth What is the cheapest way to wire it in? thanks
  13. Mark42

    32A single phase output from 3 x 16A three phase supply. Is there a way?

    I have a workshop in a remote location which I rent out. The incoming supply is 3 x 16A three phase on 180m of 16mm SWA. An upcoming customer has a machine which needs a 32A single phase supply. (Actual load about 25A.) The energy is there, but it's split across the three phases. Is there some...
  14. M

    Can a 3 phase motor that is running on single phase have 2 directions?

    I am needing to know if this wiring diagram is showing a few things: 1: Does this show a 3 phase to single phase conversion? 2: Does this show that the motor can turn in 2 directions with the same internal wiring if you toggle the SPDT switch?
  15. J

    NICEIC Certification Scheme Advice please - Certification for competance in basic single phase installation

    Hi all. I am looking for some advice. I am looking to become certified to install consumption measuring devices in small businesses. I have many years of expereince on basic single phase supplies includiing consumer units etc, assisting my father's company when he's snowed under but never...
  16. R

    Fitting a single phase Matt:e for car charger

    Evening all, Just After some knowledge about the Matt:e. I have been to a job where a 13 amp Rolec car charger point has been fitted On an external garage wall which is attached to the house. I can see no evidence of an earth rod and I am assuming it is still connectEd to a pme earthing...
  17. P

    What do I need to know to calculate size of single phase motor?

    About 20 years ago I bought an old table saw from a local school. I only had single phase at the time so I changed the motor and switchgear as it was 450V. I'm thinking of buying a 3 phase 50s bandsaw and have the same problem, but I can't remember how to work out the size of the replacement...
  18. HappyHippyDad

    Is this single phase as well as 3 phase and what is it's power rating?

    Evening all.. A friend/customer has just asked if I could connect up this commercial washing machine down at his domestic stables. He has had it in his house for 10 years. Recently it has started tripping the B40 MCB. It does not trip immediately so I don't think it is the inrush, plus it did...
  19. D

    Can you use a single phase motor to create three phase power.

    This might sound like a stupid question so apologies in advance. So I had a random thought in my head. So I was wondering if I was to use a single phase motor to spin a three phase generator to create three phase power, would you be able to create more power then the single phase motor is...
  20. M

    Can I Just replace a 3phase motor with a single phase on my lathe?

    I have a metal lathe, 1.5hp, 3phase, 575v motor. Can I just replace the motor with a single phase,220v motor? Would all the lathe wiring , switches, relays work? IF so, what HP motor should I buy? Thanks,
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