phase

  1. K

    Do I have 3 phase electric?

    Hi there I am wanting to get a 22Kw car charger installed which I believe needs 3 phase electric. I seem to recall that our house has a 3 phase supply as the previous owner had a workshop in the garden with some pretty powerful machinery. How can I tell if it does have 3 phase? Thank you in...
  2. HappyHippyDad

    More on the 3 phase question.....

    So, the actual job is on a farm. I think I'll keep things simple at the moment and just ask about voltage drop. I'll come on to earthing and bonding a bit later or on another thread! We have a 3 phase supply (100A p/phase). From supply to first barn (we'll call it Barn A) is 70 metres. For...
  3. HappyHippyDad

    Understanding 3 phase volt drop.......

    I am trying to understand 3 phase volt drop. I understand single phase VD. Lets say we have a 70 meter run of 35mm, 5 core cable from the supply to the 3 phase consumer unit. From the 3 phase consumer unit we have 1 x 16A triple pole MCB (so that's 16A per phase). which has a run of 12metres...
  4. W

    Dual phase upgrade to 3 phase

    Hi, we are converting old farm buildings to commercial units, and as my father used to run a vacuum pump and compressor in his dairy I always assumed we were on 3 phase. However, having had an electrician check our supply, it turns out we have a dual phase supply with 100A fuses on each. Have...
  5. 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...
  6. M

    3 phase RCD question

    Hi everyone, each leakage question here. I am needing to run some LED screens, professional type, not TVs. These are 500mm x 500mm panels and traditionally have 2/3mA leakage per panel. So we generally have a 63A three phase distro with a 300 mA on input and multiple outputs protected by 30 mA...
  7. S

    Running 2 phase in swa

    Due to an increase in load for a subman, I now need 2 phases for an outbuilding. Original design was 63a supply, but now an electric shower and another ac unit has been added due to a design error. Questions are, can you get a 2phase mcb to fit a schnider PoN board? Are you allowed to supply 2...
  8. M

    3 phase supplies for table & band saw

    Hi all, I have been asked to install individual three-phase supplies for a band saw and table saw. Having trouble figuring out the correct cable / breaker sizes required (I’m a marine electrical fitter and it’s been a long time since doing this sort of works). I currently have an Eaton...
  9. OnlQQker

    Terminating a 400A 3 phase supply

    Got to say they made a nice job of this, especially the glanding process
  10. L

    discharge higher than 3kw with ac coupled 3 phase

    hi guys i'm trying to get my head round the following setup growatt TL3 5kW 3 phase string inverter 14 panels @ 395W Spa3000 TL ac coupled controller - unless there is a alternative mcs approved one available growatt ark 4x2.5's with bms will i be able to draw 3 5 or 8kw with this setup please...
  11. M

    What can happen to 220v Devices if I connect a 110V phase to both wires

    Ok, i am new in this forum I am looking for some enlightenment. Today I got a call from my boss, which is now in Venezuela and he is connecting a 4000W 100v power plant at his condo. The electrician he found there connected a 2 Throw Switch Knife to the circuit to split the power coming from the...
  12. D

    3 phase run of 1300 feet

    Hello all. I am trying to get 125 amps 3 phase back to a paintball field to power an electric air compressor. I have a 3 phase 120/240v PG and E feed, 200A panel about 1300' feet away from the desired location. I have 2 transformers, so we can transform up to 480 to make the 1300' run, and...
  13. 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...
  14. timhoward

    Compact 3 phase distribution?

    I may be seeking the holy grail here, but does anyone have any instant thoughts for a compact 3 phase distribution board that doesn't cost the earth? I only need 1 outgoing 3 phase distribution circuit and 1 single phase final circuit, with an 100ma RCD main switch. This is all outdoors with...
  15. E

    Purpose of 110V 3 phase?

    Hi, I have taken over a design engineering job for industry. The design is using a 400V/110V transformer. Usually, the 110V is single phase. However, in this case it is giving 110V 3 phase 32A. The 110v 3 phase is for use with 4P 110V socket to run a pump. Being in the UK, I am used to...
  16. Y

    3 phase generator help

    Iv been asked to wire a separator (portable to go to different farms and separate water from slurry) to a 3phase 40 kva generator. The separator has 3 motors 11hp, 5.5 hp and 3hp. The 11hp motor kept tripping the gennys mcb so a previous spark fitted an adaptable box with contactors so it now...
  17. Khanzada

    Load calculations on three phase board

    Costumer have 12 flats and need to feed for each flat a prepaid meter and consumer unit within the flat , the main supply to building is three phase , my question is how to distribute the load for 12 flats, each flat have a load of 63A. Main supply is three phase .
  18. 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...
  19. D

    Where do you test from in phase rotation test on am2

    About to re sit testing section of am2. Am I required to test phase rotation at the incoming switch and also the 3 phase socket and motor. Just can't seem to find any clear instructions on what they expect on this test
  20. B

    Need to convert 3 phase 480 60 hertz to European 3 phase 330 50 Hertz

    Hi , I have a customer that has purchased a machine from Turkey. The machine requires 3 phase 330 volts at 50 hertz. I have access to 3 phase 460 at 60 hertz here at the plant in the US. I can find a transformer for the voltage but that doesn't change it from 60 hz to 50 hz. Im looking at 90...
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