phase

  1. S

    1ph to 3 phase inverter

    I have been asked if I can wire a motor for a car lifter in a domestic garage, however the motor is 3 phase and only single phase is available in the property. Is it possible to use a single phase to 3 phase inverter to power this motor? I will attach photos of the motor and its output.
  2. D

    Three phase circuit breaker - Utilising only one phase

    I have a scenario where there is a three phase DB in a commercial property where there are mixture of three phase and single phase washing machines. All the washing machines including those that are single phase have triple pole MCBs installed and wired in 5-core to 16A rotary isolator. from...
    • daavvee
    • Thread
    • breaker circuit circuit breaker machine phase three three phase
    • Replies: 2
    • Forum: UK Electrical Forum
  3. will_505

    3 phase motor running backwards wire colours

    Hi all. Yesterday I wired in my 3 phase compressor to run off our 53kva generator. I just need to know which colour cable is for which phase as I'm not sure. Cables I've got are: brown, blue, black and green/yellow. I've currently got brown wired into live 1, blue into live 2, black into live 3...
  4. O

    Best 3 phase board and a question

    What are people fitting in the 3 phase range just lately, I've had a scan at various makes and it seems to be a ---- up between Hager and Wylex at the minute, both are / were decent makes and the RCBO's are reasonably price, things like Merlin are way too dear for the RCBO's. Also am I right in...
  5. A

    G100 Export Limitation - Multiple Single Phase Arrays - Three Phase Net / Vector Metering Limitation

    Hi I have three phase installed recently to increase generation. DNO approved the extra 2 solar arrays so we have 3.68KW FIT on one phase and 8KW on phase 2 with 6KW on phase 3 We are coming to the end of the install and my question is as the DNO have limited export to zero how do we share the...
  6. puntloos

    3 phase, Automatic Transfer Switch for Solar/Generator - EPS

    For power outages, my solar inverter (+battery) is able to take on the entire house load - as long as I unplug my collection of vintage kettles. ;) - this is called EPS mode - Emergency Power Supply. Needs to carry grid (3 phase, 69A/phase) or solar inverter (3ph, only 7000W max) TL;DR: Can...
  7. H

    RCD without neutral 2 phase supply

    Hi everyone, Quick question can you fit an RCD without any neutral connections? If I have a 3 pole circuit breaker which has all 3 poles terminated with a 3 phase supply (L,L,L excluding neutral or earth) on the primary side and I am using only 2 phases on the secondary side (L,L) to create a...
  8. S

    Single phase and 3 phase supply to same equipment

    I have a single phase stainless steel pasteuriser that has two control boxes attached to it. One box houses the control for the electronics and motor for the mixing paddle. The other box houses the supply to the water jacket immersion heater. The immersion heater is 1.5kw single phase and is...
  9. MJS123

    Single Phase Transfer Switch in 3ph Distribution

    When there exists a single-phase transfer switch within a 3-phase distribution system, is it necessary for both feeds to the transfer switch to be connected to the same phase on the two sources? Take for example the image below, note that the transfer switches are connected to the power sources...
  10. Shaun-

    3 Phase Metering Question

    Good morning, So I’m working on an existing 3 phase solar system and the customer wants a way to use the huge mass of exported solar on their pool. So currently looking at possibly using MyEnergi Eddi’s or something similar to power a 3 phase heater element (probably split into 3 single...
  11. K

    How do you calculate the tollerances from a 3 phase winding measurement

    Assuming that you measure the windings for a power transformer, for example: A-B: 2,258 ohms B-C: 2,262 ohms A-C: 2,250 ohms, how do you calculate the tolerances for these? What formula do you use? You consider as reference the highest or the lowest value from every 2 readings? I just wanna...
  12. H

    3 phase 400v supply to 2 phase supply

    Hi I have a question hoping I can get some help. I wanted to know if there is a 400V 3 phase supply (A/A/A) terminated on the primary side of a TMD breaker can you take 2 phases from the secondary side of the breaker (A/A) to create a 400V supply only excluding E/N and use to power up your...
  13. M

    American Phase Colours

    Hi, Looking for advise on industrial phase colours.
  14. A

    Three phase cable to wire single phase

    Can I use three phase cable to wire single phase
    • ambr111
    • Thread
    • ausie elec cable phase single single phase three three phase wire
    • Replies: 3
    • Forum: Australia
  15. O

    Strange box attached to 3 phase meter

    I didn't get a picture so will have to wait until I go back again but I've done a crude drawing of what was there. Its in a commercial set up with a poly-phase meter, the distribution board and switchgear were all quite old but the meter looked fairly new, it was the usualll 3 phase in and 3...
  16. happysteve

    3 phase cooker - idiot check

    I'd appreciate a quick sanity check, thanks in advance: New circuit for a 3 phase cooker, in a community centre (run by a charity). Total load 16.5kW: L1 27A, L2 27A, L3 15A. (6kW oven, 6 hotplates: 3x 2kW, 3x 1.5kW). Commercial setting so no diversity: 3x 32A OCPD. (?) TN-C-S, so Zs...
  17. P

    3 phase 380V welder to run on a 3-phase 220V power

    I have an old Migatronic Automig X 200 welder configured as 380V 3-phase unit. Migatronic for spec. I have a 220V 3-phase point in my garage, but that does not work well, obviously. What would be the best option to get this welder to work? Would it be possible to rewire it so it can work on my...
  18. bigspark17

    3 phase surge on reenergising panel board

    Hi all.. Bit of a nightmare afternoon,, testing a caravan park TP&N panel board IR testing while board isolated before returning power (merlin gerin panel board) over the next 30 mins customers on park are reporting loud bangs inside some of there vans, boilers and electric fireplaces (with...
  19. 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...
  20. D

    3 Phase requirements

    Hi all i have asked a electrician about the mic level i would need to power the following machines a 45kva cnc mill, a 32kva cnc mill and a 60 kva cnc lathe but have been unable to get an answer. I would like to get the 45kva mill and the 32kva mill sorted first it will be 6-12 months before i...
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