3 phase

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  1. L

    Modification of 3 phase board

    Hello, wanting to install a new (old) MCCB in an Dorman Smith Loadline board, found a couple online, however, the client ordering the works is not keen on installing old breakers, so they would rather us connect tails onto the busbar stubs where the breaker would usually be, fashion some kind of...
  2. J

    UK 3 Phase RCD?

    I have recently started on a site where there is a 16A 3 phase Atex socket which is supplied by a 16A 3 phase MCB. It was picked up on a recent inspection that it needs an RCD. For the life of me I cannot find a 16A 3 phase RCD. I started to think does it really need an RCD? The socket is only...
  3. P

    3 phase supply cost

    Does anyone have an idea how much UKPN would charge for a 3 phase 100A supply. There is an overhead transformer less than 100m away from the property & the poles go right pass feeding the building next door.
  4. A

    Help with 3 phase pump wiring to sprinkler controller.

    Question on wiring? Sprinkler controller to 3 phase Goulds water pump. Sprinkler controller: "open sprinkler" uses 5vdc for master pump start circuit Goulds irrigator GT153 480v Eton contractor with 24Vdc control circuit and over load. Relay for sprinkler controller master pump on/off control...
  5. P

    Can I power 2 x 3kw immersion heaters from a single 3 phase contactor?

    Is it ok/advisable/legal to power 2 immersion heaters (both in the same cylinder) from a single 3-phase contactor? I need to connec
  6. C

    3 phase USA 3/60/220 to UK 3 phase is it doable thanks

    Hi 3 phase USA 3/60/220 to UK 3phase is it doable thanks oh and how?
  7. S

    Coffee machine wiring 3 phase on single phase circuit

    This coffee machine is three phase model number sm 105e It’s three phase with 3 brown cables one neutral and earth What is the cheapest way to wire it in? thanks
  8. S

    4.8kw electrical combi oven/steamer 3 phase

    In a small restaurant theres a single phase supply just wondering what size converter i would need to convert 3 phase to single phase and what size mcb to install into the ccu thanks
  9. G

    Roller Door Feed 3 phase (RCD?)

    HI all, changing a board in a commercial warehouse and they need a 16amp feed to a new roller door, there is an armored there that will do it and I'm fitting a new shnieder board with RCBO's, am i best fitting a 3 phase MCB in the board or a RCD commando by the door? Cheers Grand
  10. D

    Calculate 3 Phase MCB size

    Hi..I should probably know this but don't do too much 3 Phase stuff!! Can anyone give the formula for working out the size of a 3 phase MCB? I have a 12kw 3 Phase fryer to install. Cheers
  11. D

    3 consumer units off one 3 phase meter.

    Evening..Just wondering if it's acceptable to run 3 separate consumer units off one 3 phase meter, I have seen 3 consumer units off 3 meters on a 3 phase supply many times but never off 1 meter? Cheers
  12. E

    3 phase boiler install on domestic property

    Hi all, A customer is looking into the option of upgrading to a 3 phase power supply in order to get a new electric boiler system installed. They currently have a single-phase supply. They have an out-building with an electric car charger. Would an option be to have say a 1 way 3 phase board...
  13. B

    Old 3 phase Lucy Oxford main cut out- removing fuses

    THIS IS FOR ELECTRICAL NEWS ONLY
  14. HappyHippyDad

    3 phase kiln questions?

    A customer has asked me to install a supply for a Wenger Webcot kiln. The faceplate is very worn and I cannot see the kW. They state the kiln it type 3670w and is rated at 12kW. The paperwork does have 3670w on it but when I look at the spec sheet (see picture 2, SpecSheet) ) there is no sign...
  15. J

    New home. Is it 3 phase?

    Hi, just moved in, and I find this, and haven’t seen anything like it before. Is this 3 phase? any concerns at all? There is a heated pool outside. Could be needed for the pool heater. 1st post, and I thought I’d seek some guidance on here. Many thanks for replies.
  16. M

    Can a 3 phase motor that is running on single phase have 2 directions?

    I am needing to know if this wiring diagram is showing a few things: 1: Does this show a 3 phase to single phase conversion? 2: Does this show that the motor can turn in 2 directions with the same internal wiring if you toggle the SPDT switch?
  17. D

    6mm 3 phase 20mm conduit

    What's everyone's thoughts on 4 conductors 3 phase 415v at 6mm running 3.5mt in 20mm conduit domestic use. 9
  18. D

    3 Phase Install

    Hi All, Happy new year to you all! I’m working for an engineering company, been here for a few years. im currently working towards my NVQ level 3 in electrical maintenance and I’m in the middle of supplying a 100A Distribution board from a newly upgraded main 250A board. When the new board was...
  19. T

    3 phase cable calcs

    After my last post and having and having to re-learn some stuff can someone check and advise on a few things. Sorry if this is wrong don't hate, will make a good learning exercise as my mentor won't help me and hopefully will help others. Specification 16 circuits- wired up to caravan hookup...
  20. T

    Cable calcs 3 phase

    Its been long since I was in college doing cable calcs and obeing onsite as I've studied a completely different course at university, I understand de-rating factors but need some clarifying up to brush up. If I need a 600A supply which can be split 200A each phase. and being supplied via SWA...

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