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single phase

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  1. S

    Sleeving 3 phase cable to single phase cable

    Could someone help me understand what is cable sleeving? Can we sleeve a 3 phase cable to single phase cable? Is this as per any regs? BS 7671? Could you send me some pictures of the same if you have..
  2. C

    Thermal overload 3 phase to single phase pump

    Boiler panel controlling a 3 phase grundfos pump. Pump was tripping thermal overload... Pump replaced for a single phase grundfos by engineer etc... I was asked to convert the control circuit to single phase which I did. But still tripping on the thermal overload. Set it slightly higher for...
  3. S

    Single Phase Motor Reversing Direction

    Good evening you sparky lot I'm after some wiring advice on an old single phase motor for use on a lathe. Please see the attached pics. The tails have been removed for clarity. Live was connected to terminal B, neutral to AZ. Is it possible to reverse the direction of this type of motor...
  4. A

    3 phase PV installation question

    Hi - hoping someone can help with the question below, thanks in advance for your time. We're looking at an installation before the FIT goes away, and discussing our needs with a couple of installers. The complication - we're in an old farmhouse with 3 phase supply. One phase is tapped off...
  5. P

    Single phase appliance from a 32a 5 pin trailing socket

    Hi all What are the thoughts on fitting a male 5 pin plug to a single phase appliance then connecting it to a 5 pin three phase socket. Obviously only using one phase. Rough but as a temporary measure is it against the regulations? Found these distribution boxes which appear to do similar...
  6. A

    Noob Question on 63amp single phase plug

    Hi All, I'm not an electrican, i work in the events industry and we have quite a bit of plug and play distribution. I have just recieved a 63amp single phase (blue C form) plug on the end of a cable and was surprised to see it had the usual three pins but now a forth smaller pin shortert han...
  7. G

    Help single phase motor problems

    Hello I am hoping someone can help me please. I am having problems with a motor on my home made 2 x 72" belt grinder This is the motor I have it wired via a DOL motor starter. Recently it stopped running under load, once I removed the grinding belt the motor would stutter and my main drive...
  8. S

    For Sale Single Phase & (some) Three Phase Boards & Devices

    Afternoon all, I've had another clear out. I thought I'd offer it up to you guys before I whack it on eBay. I'm ideally looking for an offer on the lot, however i'm happy to take offers to suit what you need. Here's what's available: 1 x Single phase 11 way consumer unit 100 amp incomer -...
  9. the pict

    single phase 3 wire or?

    On page 46 of the BBB we have various diagrams of the options of supply the SSE are due out sometime within this millenium to provide 3 phase supply , at present there is what I can only assume is a split concentric supply cable connected to 2 cutouts the 3rd I thought was just unused and the...
  10. C

    3-Speed Single Phase Motor Wiring

    Hi, all. I need your expert help in creating the internal wiring diagram of the motor with the following information we retrieved. I have attached a diagram showing: A. Motor external wiring diagram B. Wiring Resistances C. My diagram for main winding only I am missing how to include the...
  11. D

    3 X single phase showers

    I've been asked to price 3 X 7kw showers. There is a three phase board about 40 meters away. Can anyone see an issue with 40 amp three phase MCB with 10mm four core swa to a sub board then 3 X 32 amp rcbos for each individual shower. Cheers
  12. T

    Conversion of 3 ph. to single phase lesson

    Thought you might like to know how to convert 3 phase to single phase in case you need to in the future. Please follow illustrations below. I can accept no liability for following these instructions.
  13. D

    Installing a 230v Single Phase Air Compressor in my home garage

    Hi gents Just joined and this is my first post. I’ve decided to upgrade my home garage compressed air setup since my current 3hp 50ltr 8cfm struggles to run the air tools I’m using to restore my old project car. All was going ok until I invested in a 20 gallon sandblaster with the result...
  14. D

    Amtech/trimble single phase three phase headache?

    Amtech will not let me record a single phase D.B from a 3 phase D.B for a sub-mains. It keeps saying in a warning message that the installation is 3 phase and it cannot be recorded as single phase even though it will let me record single phase D.B's individually on the board schedules...
  15. Dave Edwards

    Increasing PV panels on a single phase grid connection

    Someone is connected to the grid with single phase supply and they have a 4kW PV array directly connected. They want to increase their PV generation, and add another 4kW. I keep reading that if you generate more than 4kW you need a "3 phase inverter to split the load". But I can't find out...
  16. S

    Help - connecting up single phase motor

    I have been asked to connect up a single phase motor in an extractor fan but not sure of connections and don't have data sheet The fan is a Nicota DDM 9/7 A six core cable comes out Brown and white joined to one connector Brown - capacitor linked to this Black - capacitor linked to this Brown...
  17. Lucien Nunes

    Which CU? Quick answer needed!

    I don't often install single-phase CUs, but I need a couple of metalclad 10-way units for a light commercial situation, which will be populated with all RCBOs. They simply need to be reasonable quality, with not-too-expensive RCBOs, as roomy as possible. If they can be got from Screwfix, so...
  18. L

    Single Phase Load Estimate to Three Phase Power Supply

    Hi Everyone I would be glad if you could clarify this for me: For a Load Estimate Survey whereby 95% is single phase, the Load Estimate is 90 KVA (Single Phase). However, the power supply is three phase 4 wire system. To calculate the current per phase, the 90 kVA is divided by three i.e. 30...
  19. G

    Single Phase Charger on Three Phase Supply

    Hi all, been a bit of a lurker of the forums here for a while and so far they have saved me more times than I can say, but now I have a question that I am hoping you can help me with. I have a single phase forklift charger and it currently has a 2p+e plug and connects to the corresponding...
  20. J

    Help on wiring needed for Single phase 2.2kw motor

    I bought a pelletizer machine from China and the terminal box is without any wiring diagram. Can anyone help ?

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