3 phase

  1. wsoppitt

    remote 3 phase charger install

    hi guys / girls , any advice would be appreciated, So the situation is a domestic property has a 3 phase supply , from the service head we have 3 phase supply to henley blocks , from here there is a 3 phase supply to remote outbuilding and a single phase supply to the house consumer unit ,the...
  2. G

    TIS700 PAT Tester - 3 phase testing issue

    Hi all, We have a limited in house PAT testing requirement and were advised that the TIS700 fitted our needs. The unit works fine for 110V and 230V extension lead testing, but we're having issues testing 4 and 5 pin 415V extensions. We are using adaptors that came with our (very) old PAT...
  3. B

    UK 3 phase rcd protection

    Hi everyone, I have been asked to pull in some new 3 phase supplies for 7 new welders which do not require a neutral connection. The client has specifically asked for them to be plug and play and rcd protected, which is fine as they are under 32amps. I will be running in 5 core swa's for...
  4. Sajith

    soft starter for 3 phase motor

    Hi All, I have recently purchased a motor soft starter from aliexpress for a 3 phase motor Before connecting load I measured the input and output voltages. Input voltages between each phase is 400V. However when I measure the output, voltages (after timer delay) is different. Output...
  5. 3

    Contactor. Proving dead . 3 phase .

    When working in a control panel. If I needed to replace a 3 phase contactor do I need to carry out a 10point check to prove dead on just the mains isolator. Or do I need to 10point check the mains isolator and then another 10point check on the contactor before removing. Many thanks
  6. K

    3 Phase connections

    Good day to you. I need electrical drawings urgently and hopefully there is someone that can assist me. They are all for electrical trade test. Taking into consideration it's three phase. 1. A 2 Speed starter with selector switch and motor with control circuit 2. A manual 2 speed starter and...
  7. J

    3 phase problem after spark did 5 year safety inspection

    Hi lads 5 year safety inspection the spark put the tails back and later line 2 of the 3 phase blew blowing the box off the wall and taking out the main fuse on the same line into the building can you all just say quickly what you think the spark may have done wrong ? Cheers
  8. W

    UK 3 Phase Smart Meter EDMI ES -30 B Install

    3 Phase Smart Meter EDMI ES -30 B Install I have a question regarding the potential replacement of my existing EON supplied ELSTER A1140 3 phase meter which is currently providing E10 switching times for our all electric home. The house has an old electric storage boiler and the system is...
  9. J

    3 phase meter problem

    Hi there, I built a house with ground source heating 5 years ago and it's a fairly large house so I have 3 phase supply 80 amps per phase. I had a regular meter it was a Elster A1140. I read this every month on the 1st and logged the readings so I have a good idea of my usage patterns. Ground...
  10. 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...
  11. 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...
  12. X

    UK 3 Phase Motor Star/ Delta phase conversion

    Hi Guys, We have a CNC router which uses single phase for the spindle, stepper motors and control box. This is all wired in and working correctly. However, the CNC also features a vacuum bed, powered by a seperate 3 phase motor. We have no 3 phase in our shop, the motor is labeled as 4kW...
  13. 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...
  14. 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.
  15. R

    3 phase heater & Economy 7 wiring diagram question

    I've a 3 phase storage heater currently wired to the main fuse box in an office I have. The heater has 2 supplies/isolators, 1 for charging at night and 1 for the fan (this is live 24 hrs a day). The charging supply only comes live at night due to a dedicated timer installed on that circuit for...
  16. 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...
  17. 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...
  18. 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...
  19. 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...
  20. 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...

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