3-phase

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  1. xedbot

    SSE 3-Phase Upgrade Gone Wrong!

    Hello, Looking for some advice following a botched 3 phase upgrade today. Some background: Commercial unit originally fitted out (4 years ago) with single phase main supply feeding into 3 phase DB. 2nd DB run off breaker to service single phase requirements (small kitchenette, lighting...
  2. P

    3 phase 380V welder to run on a 3-phase 220V power

    I have an old Migatronic Automig X 200 welder configured as 380V 3-phase unit. Migatronic for spec. I have a 220V 3-phase point in my garage, but that does not work well, obviously. What would be the best option to get this welder to work? Would it be possible to rewire it so it can work on my...
  3. Lucien Nunes

    How many phases? And another Lucien grumble: 'Amps Per Phase'

    When I joined this forum a decade or so back, there was a discussion going on about a welder that was connected with a 3-core cable to L1, L2 and earth of a 3-phase supply, operating on the 400V present between L1 and L2. The advantage of choosing 400V is the reduced current requirement. My own...
  4. Spinball

    Is a 35mm cable big enough for a 3-phase domestic installation with...

    ...2 x 22kW EV chargers, 10kW of solar panels + 15 kW batteries and a heat pump for a 4 bed house and a 1 bed detached garage office? Got 3 phase being put in and they're planning on putting in a 35mm cable. Just checking with you experts whether this will be fat enough. Many thanks
  5. A

    Wiring Multiple VFDs off Dryer Plug for Multiple 3-phase Motors

    Posted this to the DIY section since I'm not a business or employee in this matter but it feels more appropriate (and might actually get responses) here. Hi all, I'm new here but have posted on Hobby-machinist and Practicalmachinist forums. I want to wire up an electrical box for a milling...
  6. E

    1-phase or 3-phase to house?

    Just been down to the basement to check what I've got. The supply to the (old) house comes from an 18mm cable, is split out to a live and neutral, goes to a 100A fuse and single-phase meter, and on to the consumer unit. So, it's obvious that I've got single phase. But here's the problem: a...
  7. P

    3-Phase Multiple Questions NZ

    Hi, I am a pastry chef in New Zealand and am wanting to build a kitchen at my home. Either convert the garage or preferably build it on a food trailer. It will be set in one place as I will not be selling directly from home. Just catering out. But if on a trailer I can move it easily at a later...
  8. imnvsh

    3-phase oven, how to connect it?

    Thank you for your time ? I have an oven that connecting directly to the 3-phase source (3N in the pictures below). However, this is quite annoying, because the oven is fixed close to the source. Hence, I would like to know whether it is possible to wire as 1N instead, i.e. wiring the device's...
  9. Lucien Nunes

    Compact 3-phase DB solution needed

    I'm moving my workshop into a room that contains the intake. I want to put cabinets where the switchgear is at the moment, so it would be very handy if I could condense it into a small space above the meter board and put a little cupboard around it. I am looking for the most compact...
  10. T

    Qualifications Necessary to Work on 3-phase

    Hi guys, I'm a small business owner who maintains canal boats at a boatyard with a 3-phase supply. I have about ten years of experience working with 12 volts and single-phase electrics, effectively undertaking an informal apprenticeship with a time-served electrician. I am looking to gain...
  11. A

    3-Phase question - industrial unit

    Hi Hoping someone knowledgeable can give me an idiots guide to power for an industrial unit we are leasing. Please bear in mind I have close to zero electrical knowledge. We need 3-Phase power 400V connections for around 6 drilling systems we run on an intermittent basis, no more than 2...
  12. M

    Recording of 3-Phase Circuits

    Hi all! So, I was filling out a test sheet for a number of 3-phase circuits we did an EICR on. For years whenever a 3-phase circuit exists I have recorded them on a single line (eg. 1/TP or 1/L123) and recorded the highest or lowest value applicable to that particular test regardless of...
  13. P

    Replacing 3-phase commercial cooker

    Hi I've removed a 3-phase commercial cooker from my kitchen (combined oven/hotplates/grill). The supply is via a 3 phase mcb (no RCD) The replacements are a domestic induction hob and an integrated oven/grill. The hob has 2 line terminals which can be linked for single phase or wired to 2...
  14. Paul Cole

    Hello everyone - 3-phase German wiring needs

    Hello everyone, I've recently moved to east Germany into an old terrace house that requires updating. A German forum has helped me upto a point with understanding what we have, but the language has become a strain. Can anyone here comment on the configuration we have and on my ideas for...
  15. W

    Emergency! Help needed - 3-phase meter install

    Hello, I'm hoping someone can help with a bit of an urgent situation I'm in! I've just opened a new bar/restaurant after a lengthy refurb. Previously, the venue ran of a single-phase meter. The refurbishments have been extensive and with all the equipment we've installed (ventilation, air...
  16. A

    French House 3-phase RCD tripping

    Hi All, Long time lurker, first time poster. We staying at a family friend's house in france and they are having frequent trips of their electrical system where they turn multiple breakers/the main switch off and on until it comes back on. Over the last week I've managed to narrow down a...
  17. H

    3-phase cooker circuit installation

    Morning all, Been asked by a mate to drop a cooker circuit in to a commercial unit. Not having dealt with 3-phase cookers before, thought it best to post my thoughts up here as a sanity check before I proceed. Cooker is L1 = 26A, L2 = 26A, L3 = 14A. So In = 32A Type B 3-p MCB. Need to do cable...
  18. Marshall Kidd

    Splitting 3-phase circuits for 3 high draw theater fixtures.

    Hello. I'm new here so my apologies if this post ended up in the wrong forum. I have a basic understanding of phases and voltage and the lot. Today I'm trying to wrap my head around how I might be able to split one 3-phase 240v 50a source to accommodate 3 high draw theater fixtures. Here's...
  19. H

    3-phase cable calculation

    Hi, A while ago I posted about my neighbours 3-phase generator etc.... So he's being running through diesel like there's no tomorrow and been talking to a local barn who have said he can take the power from his property to supply their kiln. He's been measuring the his average usage over the...
  20. D

    3-phase wiring in industrial unit

    Hello! I'm new to the forums and I'll be honest, I'm no electrician. I do however use the infrastructure provided by electricians, mainly in the form of 3-phase power to run my welding plants. You guessed it I'm a fabricator/welder by trade. Anyhow I've got a query that I'm hoping someone on...

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