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  1. Mark42

    Three phases in single domestic kitchen grid box. OK or not?

    I'm fitting a small kitchen in my remote office/workshop with a limited, existing, supply (3 phase/20A MCB on a long 4 x 10mm SWA). I need to think carefully about diversity and load balancing. My proposed solution is to install individual final circuits for every appliance (Small hob, Small...
  2. gazdkw82

    Three phase polarity test

    I have my AM2s coming up and i am a little confused to the live polarity test on a 3 phase circuit. It's the first live test and I dont want to fail on what is a simple test. I know how to perform a live polarity test on a single phase circuit but unsure on the procesure for 3 phase. Is it just...
  3. S

    UK Wiring emergency lights

    Hi Guys, how would you wire three gang two way switch for emergency lights so you have 3 feeds coming to the switch aswell as 3, 3 core and earth going to the light aswell as 3, 3 core and earth being strappers to the others 3 gang two way switch new to electrics so help would be appreciated cheers
    • Scifen
    • Thread
    • 2 core coming earth emergency feeds light lights switch three wiring
    • Replies: 19
    • Forum: UK Electrical Forum
  4. Dmouck

    Three way wiring to single pole switch

    I tried to put in a smart switch, which should be simple enough but when I took the plate off I was surprised at what I saw. There are two lights controlled by the switch, but still single pole switch. The feed wire is three way with one hot going to one light and the other hot going to the...
  5. D

    Two post carlift single to three phase

    Has anyone had any history of powering a three phase motor from a single phase supply? Is there a preferred/best way of doing this? i.e.single phase to three phase inverter/VVFD, convertor or using capacitors etc. Not my usual avenue, but I have had the question put to me, so I am trying to get...
  6. T

    smoke alarm wiring.

    went to change three smoke alarms today and found they were wired in 1.5 t&e useing the cpc as the interconect link wire. would you class this as a c1 / c2 i was thinking c1, any thoughts
  7. M

    Using one phase of three phase supply, will rcd work properly?

    I have a property abroad that has just been given a new supply by my local electrician . It has gone from six mm2 single phase supply to 10 mm2 three-phase supply it has a three-phase RCD unit and currently is only using one of three phases The other phases will come into use when the...
    • mikeytgw
    • Thread
    • electrical work phase properly rcd supply three three phase using
    • Replies: 4
    • Forum: The Welcome Forum
  8. B

    All three neutral wires needed for a smart single gang light switch?

    Hi all, I'm wiring one of those smart switches which is a single gang and I have three live wires (x2 com) (x1 L1) and three neutral wires that are currently in a block. The original switch just use live (com and L1). I've wired up the new switch with the live wires but I am trying to attach...
    • bbgun
    • Thread
    • light light switch needed neutral single smart switch three wires
    • Replies: 6
    • Forum: UK Electrical Forum
  9. S

    Three phase INDUSTRIAL fuse board recommendation

    Hello I have a small industrial unit with a messy distribution board. It has 100A breaker and around 10 circuits (lights, sockets, air compressor, three phase 16A fuse etc....) Can you recommend a quality new board from Schneider Havell or Hager?
  10. B

    Earthing of Three phase Motor

    Hi recently was on a job carrying out EX inspections on three phase motor at a pharmaceutical plant. The supply cable going to the motors does not have a core for the earth they have used the braid/SWA of the cable for earthing. So entering the three phase motor with EXe cable glands terminating...
  11. SJD

    Single to three phase converter

    One of my customers has a single phase to three phase converter, to power a 3-phase pump. The converter is a rotary type, quite noisy, and recently has been prone to breaking down (three times so far this year). So they are looking for a static or "digital" converter replacement, 230V to 400V...
  12. C

    Three phase - serial connection

    I have two FCU's in the same room. Can these two FCU's (3 phase) be fed from same cable from the panel located in the another room? Is it acceptable as per codes? or do I need to run separate cables?
  13. S

    Three Phase Power Supplies

    Hi I'm new to the forum & currently still learning the trade, would someone please be able to clear this up for me as I keep getting conflicting information, my understanding of three phase power supplies is, if you have a standard system in place say TPN supply & 3 x main cut out's, fused at...
    • Spark2019
    • Thread
    • phase power supplies three three phase
    • Replies: 6
    • Forum: The Welcome Forum
  14. J

    Bathroom pull switch with three sets of wires conundrum - help required!

    Hello! I’m looking to solve a problem that’s been bugging me for a few days now (and a few fuses!). So the switch broke on my bathroom pull switch and I attempted to replace it which is when the trouble began - there're three sets of wires for a start… IMG-3777 - https://ibb.co/TKs4n1c So...
  15. A

    Noob Three Phase Help

    Hi Everyone, I'm hoping someone might be able to help answer a question which i have long pondered over. Firstly i am not an electrician, please dont hold it against me, i'm just interested to seek answers when there is something i dont quite understand. I work in the event production...
  16. D

    Three phases main supply

    Where i can find in the regulations that the always has to be L1 - brown L2 - black L3 - grey
  17. Paul Williamson

    Old and New three phase board wiring

    Hi All Can I get some advise please. Is it OK to install a new lighting DB with all new lighting circuits wired in all new colours, Brown, Blue and Green/Yellow, all the other boards are in the older colours. Black, Red and Green/Yellow. The question is, the DB is a 3PH & N and the tails have...
  18. 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 -...
  19. Amnesh Singh

    Connections of a Three phase Motor STAR and DELTA.

    Amnesh Singh submitted a new resource: Connections of a Three phase Motor STAR and DELTA. - THREE PHASE 400/600 Volt AC Motor STAR and DELTA Connection DIAGRAM Read more about this resource...
  20. J

    Electrician Jobs Three Phase Rotary Converter Install with Sockets

    Not a 'commercial' job as such but given that three phase is involved I feel it belongs in this section. In my semi-professional cabinet making workshop I have a 32A consumer unit. For a range of three phase machinery I have acquired a Transwave Rotary Converter (RT4) which requires a 25A...

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