single phase

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  1. Stevetheaviato

    UK asked to do work alone that you dont feel competent enough for ? worried about losing my job

    So recently i have been given a lot of changes to the work im used to, quick example = im ok with single phase boards but i am not competent or confident enough in three phase. My boss is a very angry guy..... should i just go for it or should i refuse until i have training ? cheers
  2. M

    Question Regarding a RCD on 3 Phase, with a single phase sub-circuit

    I am installing a micro-brewery in our barn in France; as you can guess that, means that I am a brewer, not an electrician :-) I did 'fess up to being a DIYer when signing on. The brewhouse runs on 3-phase, both for the 12kw heating elements and for the pumps. All use a delta configuration i.e...
  3. D

    Single phase 240v motor starter & overload with on/off switch wiring?

    Hi, Hoping you all can help me wire up my single phase 240v induction motor. Can someone please explain or even better sketch out where the wires need to go, I have a fair idea already just want some good advice before I continue. Switch is CK-5 10A 250v - SWITCH Thanks in advance!
  4. S

    Help Required please

    Hi Guys I recently came across two single phase supplies down the same four core cable, supplied by two separate breakers is there a reg to back this up?
    • Sam2020
    • Thread
    • breakers cable help never phase please recently required separate single phase something supplied supplies
    • Replies: 1
    • Forum: UK Electrical Forum
  5. D

    Single phase board use with 2 phases

    Hello guys new in this forum. In my 19 years as an electrician I've never seen this. Looking for any thoughts on this. Been asked to install a few new circuits In a domestic garage. There is a granny annex on top of this garage also. Supply is 3 phase in to a 3 phase isolator. From there...
  6. U

    What building can I put 3-333kva, single phase distribution transformer?

    What building can I put 3-333kva, single phase distribution transformer?
  7. J

    Single Phase or 3 Phase

    I´m about to renovate a market stand into a snack bar and need to know if I´ll need Single-phase or 3 phase power supply. The stand is very small 11m2 and will have an electric 4 hob, extractor fan, a couple of small fridges, 1 small freezer, coffee machine, microwave and toaster plus lights...
  8. M

    Single phase induction motor schematic

    Hello, I've found an old motor originally designed for operating jealousies. Could you help me read and better understand the following schematic? As far as I understand, it is a single phase induction motor, there is 47 uF capacitor connected to it in order to start. There are 3 contacts...
  9. T

    Schneider 63a single phase switch fuse

    Has anyone used a Scheider 63a single phase switch fuse before? Im just wondering whether they need crimped connections or whether its a terminal?
  10. robertl

    Single phase power all thats avaiable for new workshop build

    Hello Everyone, new to the forum and looking for some advice on a new workshop, i'll explain. I am planning on building a metal / woodworking workshop (mainly aluminium and stainless steel) for boat work, refurbishment and boat building. I am a marine engineer to trade and i am planning on...
  11. J

    9kW 3ph Immersion Type Heater run in Single Phase

    Hi, I received a 9kW 3ph heater from a friend from india, i was hoping to use this in steam production for a distillation project i am working at. I rewired it and made the 3 heating element in parallel connection. Now my problem is the 6 gauge wires i am using are always heating up, also some...
  12. G

    Single phase circuit on 3 phase system calc

    Hi, I have a query about calculating current in a 3 phase system. So a 22kw load in 3 phase assuming a power factor of 0.8 would be 22000/(1.732x400x0.8) = 39.69A and say a 7.2kw load on a single phase supply would be 31.30A if you simply use ohms law. But what happens when you calculate the...
  13. 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..
  14. 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...
  15. 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...
  16. 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...
  17. 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...
  18. 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...
  19. 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...
  20. 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...
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