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  1. A

    1 phase 2 pole 400v pump wiring

    Hello. How i should connect this 1 phase 2 pole 400v cooling pump? If i apply 1phase 230v and neutral it Will only growl and "spin" very very slowly. Thank you for help.
  2. S

    3 Phase Distribution Board Dilema

    Hello All So I'm not long out of my college days and unfortunately I didn't have a lot of exposure to three phase and commercial wiring systems. I have a three phase switch fuse Isolator rated at 200Amp supplied by the landlord. I need to split this across two Proteus distribution boards, the...
  3. M

    G99-SGI-3 4.4 kw set export limit phase to neutral loop impedance test on site

    G99 SGI-3 4.4 kw set export limit phase to neutral loop impedance test on site 0.309 ohms and dno max being 180 m ohms or 0.018 ohms so site reading are well over the top or is this not unuall for 1950 lead cable TN-s
  4. X

    3 Phase Vacuum On Single Phase Supply

    Absolutely losing my brain here guys What I would like to be able to do is power our 3 phase motor on a single phase supply. Thought I had it all figured out, motor is dual voltage, on 230v its pulls 30amps 8.6kW rating. Nice cheap option was a dps (compared to getting 3 phase installed or a...
  5. T

    Wiring 3 Phase/Single Phase Hob

    Hi, searched the forum but cant locate anything similar so apologies if ive missed something. Ive got a new hob to install in the kitchen (Cookology CIH602). Ive got a dual cooker connection plate with the oven already connected and intend to connect this. Looking at the manual, it can be...
  6. Aegir01

    Hooking up a bandsaw from single phase

    Hello all, I signed up here for a little help. I bought a 3 phase bandsaw and went down the rabbit hole of VFD’s etc. ‘The motor is 3 phase 400v and I have 1 phase 240v (Australia) . So I bought a VFD that has an input of 240v single and an output 400v three. It’s currently in the post. I...
  7. W

    Home Lathe with 3 Phase inverter tripping mains

    Hello - hope someone can advise please. I have a recently purchased second hand Myford lathe which has a 3-phase inverter (Siemens Micromaster 410) Lathe all works fine but regularly trips my RCCB 80A 30mA breaker taking out half of the board - usually when first powering on. The inverter is...
  8. T

    Lost Neutral on 3 Phase system - how do you calculate the effect on line voltage

    I know the effect of a lost neutral (floating neutral) on a 3 phase system, and the theory of why the line voltages can vary. However, I have been attempting to show this by calculating the line voltages of a phase system at given loads on each phase. Lets say:- Red 296 Amps, Yellow 279 Amps...
  9. 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.
  10. 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...
  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
  15. 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...
  16. 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...
  17. littlespark

    Phase loading in a chippy

    What can be worse than electrical installations on a farm, or in a pub?...... Chippys! Got a phone call from my local.... Lights and kitchen equipment not working... needs checked by a sparky before Scottish Power would attend. She'd blown a main fuse! So ive been tasked with working out the...
  18. R

    What diversity factor to be applied to a three phase food holding unit?

    Hi there currently doing some diversity calcs for college work and had a query about what diversity factor to apply to a 16A 3 phase commercial food holding unit. I'm thinking that this equipment will be only used in the day time(breakfast, Lunch and Tea (what we call the evening meal- dinner...
  19. R

    3 phase (220 volt) pizza oven to 1 phase (220)?

    How can I convert a 3-phase (220 volt 5.6 kw) pizza oven to 1-phase (220) 2 heating elements, no motor.
  20. D

    UK 3 phase sub board addition

    Hi Looking at a job currently adding a 3 phase solar installation but the distribution board is full obviously a new board is the best option but if the customer isn't interested in this what do people usually do? Add a small 3 phase board and use Henley blocks, I've never seen this done but I...

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