3 phase | Page 3

3 phase

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  1. T

    How to check if 3 phase is easily available for a flat ?

    My daughter lives in a flat in London in converted circa 1900 5 storey terrace in Bethnal Green. She is considering getting a Stiebel Eltron instant water heater fitted, however if she wants one that is powerful enough for a bath, she needs 3 phase. Are flats like houses in that each flat is on...
  2. A

    Am2 3 phase testing procedure

    Hi got my am2 Tomorow and not sure on how to test continuity for 3 phase circuits, like where to link out also for IR test aswell
  3. S

    Solar 3 phase kva limit

    My client wants to install a 100kw solar system. He has 3 phase and 100 amp fuse installed on 200kva transformer. Is 69kw the limit on 100 amp fuse or can he go over without a limiter fitted? Thanks
  4. 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...
  5. L

    UK Where to measure Ze, opinions welcome!

    Where do people record the Ze & PFC of a 3 phase installation, if there is say 10m of 25mm tails between the 4 pole isolator (next to the meter) and the 3 phase distribution board, therefore some (though negligible) resistance? Do you tend to test at the origin, and record that result, or do...
  6. S

    Recommend me a Type B (3 Phase) Distribution Board

    Need to source Type B 3-phase distribution & 3P MCBs for EVSE, 1P RCBOs etc. so my sparky can install. A 6-way 3P board will suffice. Wondering what the general concensus is. Say, Contactum at the cheaper end vs Schneider Acti9 at the upper end. Drawn towards the Schneider as super neat...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. J

    What size wire and over current device needed for a 480v 3 phase generator 114 amp.

    wiring a 480 volt 3 phase 114 amp generator to run 2 machines. Both machine nameplate 480 v 3 phase 50 FLA. What size wire and over current device would I need to protect the Generator and also the 2 machines running off the generator.
  12. 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...
  13. W

    3 Phase Domestic Solar Installation

    Help please, this is my first post on this subject regarding solar panel / battery installation into house with 3 phase supply. I am a DIY level person and am seeking advice to allow me to understand what to expect when engaging with installers. I have a 3 phase domestic supply. See image...
  14. 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...
  15. M

    schneider impulse relay for 3 phase switch all

    Hi all I am new to this forum and hope this is right placed and of interest. I would like to make a setup with one or more impulse relays, controlled with one pushbuttom. It should make it possible to switch off 3 circuit breakers in the house cabinet, all on different phases. Schneider makes...
  16. P

    3 phase and borrowed neutrals?

    Hi everyone, I want to repurpose an old cable that was previously used to power a 3-phase machine. The cable is 4L1.5 micc, and I don't want to replace it unless I really have to, as the cable run is convoluted/inaccessible to say the least. It was obviously installed before many other things...
  17. M

    3 phase power connection upgrade

    Hi we want to upgrade our single phase power to 3 phase power at our commercial premises. 3 phase is next door just beside our doors. We need 67 kv of power for our sunbed shop. Will electrical supplier need to put new cable or they can connect us to existing one ?
  18. 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...
  19. OnlQQker

    Terminating a 400A 3 phase supply

    Got to say they made a nice job of this, especially the glanding process
  20. 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...

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