3phase

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  1. S

    terminating a 3phase db

    hi i have to connect up a 3phase db next week its a 48way ive done countless cus and dipped circuits into dbs b4 anyone have any guides to doing it correctly
  2. C

    Current imbalence in a 3phase p.t.o driven generator.

    A number of 3 phase induction motors and a single phase motor are fed via a p.t.o driven generator. There is a small current imbalence between the phase feeding the single phase motor and the other 2 but this i think is acceptable. How much of a current imbalenbce in amps (A) would be deemed...
    • Collie & Duthie
    • Thread
    • 3phase canada current electricians' talk generator manufacturer phase their
    • Replies: 3
    • Forum: Electrician Talk | All Countries
  3. D

    single phase inverter, 3phase supply is this acceptable under G83/1

    has anyone had experience of connecting a single phase inverter ot a commercial 3phase supply, are there any issues?
  4. C

    4KWp 3phase?

    An instalaltion 4KWp in a new build house with a 3 phase supply. Would you: Install a 3phase inverter? not sure they are made for such small instalaltions, Install 3 single phase inverters and a monitoring device to cut them all out if one phase drops. Install as a single phase system and...
  5. S

    3phase or single phase motor.

    hey guys, ok basically a friend bought a 2nd hand thickness planer and asked me to do him a favour and wire it for him.i havnt much experience at this. first off i cant tell if the motor is single or 3phase, it has 400v and 220v written on the plate on the side of the motor. there is a...
  6. sythai

    3phase help please....

    Hi there... Bit out of practice with 3phase design, and want to learn more. Just want to check if this would be correct: Ib = KW/V*1.732 Many thanks, Sy
  7. C

    3phase

    At any point on a 3phase motor and its supply should u get continuity across any of the phases at any point, just to settle an argument cheers
  8. T

    3Phase MCBS

    i now no the answer
    • titleist
    • Thread
    • 3phase aus electricians' talk mcbs
    • Replies: 4
    • Forum: Australia
  9. D

    3phase wiring help!

    Hi all, I am sorry to bother you all with what will seem a silly point for most of the qualified people but I am in need of urgent help without going back to my sparky as we have had a falling out. Basicly we recently had my shop re-wired which included a new 3phase supply. I had alll my range...
  10. B

    3phase supply

    Hi there, heres hoping i can borrow some of your time to corroborate an nic inspector's advice. The job is to move a 3p+n supply 30m to an adjoining building through a duct in the ground. The customer needs over 70A per phase for his equipment. So coming from the existing kiosk with 3phase...
  11. W

    Dead Testing - 3Phase Motor and S-Plan

    When testing Insulation Resistance or Continutiy on a 3phase Motor, do you need to disconnect the cables from the motor? Or do you just test I.R to the starter, then I.R from starter to motor? (as the starter will be open when dead) Would a motor come under "equipment vulnerable to testing"...
  12. P

    3phase transformer no neutral?

    Just a quick question lads been disconnecting all the temporary power as the site coming to an end and when I was disconnecting the 3 phase 110v transformers there wasn't a neutral present. Just 3 phases and an earth. Was curious why this was as I thought it would definatly need a neutral as...
  13. P

    3phase

    I have to wire up an autoclave its 3 ph 415 v 9kw and doing ohms law I get 21.6 amps the question is do I devide this by 3 or would it be 21.6 a per phase
  14. S

    3phase industrial - clear a couple of things up?

    Hey guys, first post here so please go easy :) Iv just started this job, helping a mate of mine, whose mate has brought a unit that needs fitting out. Il try and paint a picture for you... Its the middle of 3 units, that was knocked into 1, but now been bricked back up into 3...
    • screech
    • Thread
    • 3phase cables canada ceiling clear couple electricians' talk industrial lighting office things
    • Replies: 41
    • Forum: Electrician Talk | All Countries
  15. J

    3phase machine goes BANG with a bit of smoke

    hello every one just wondering if u could give me possible solutions to why it went bang. its a 3 phase machine pluged in to a socket. the socket goes straight back to board. the machine is a compressor and is very old bout 30ish years!!! i did NOT wire the sockets or the board. they...
  16. E

    3phase

    Can anyone tell me how best to protect a sub mtr that will require a 3 phase and N ? Is a 3 pole breaker the best option ? I only need 6amp protection for the power to the mtr. Whats the best price for the kit etc ?
  17. M

    Help wiring a 3phase motor

    Hi Guys Can anyone give me some "off the record" help to temporarily wire in a piece of industrial equipment with a 7hp 3 phase motor? I am taking delivery of a secondhand rubber rolling mill into my storage barn to later resell it, I want to check it runs ok first:) The barn has a new 3phase...
  18. C

    Changing 3Phase Motors

    I maintain conveyor systems and we are always changing out motors, and I have been wondering if before we put ' back into service ' we should be taking some test readings and recording them . I have asked our managers and they reckon that because we are not adding to or changing the circuit that...
  19. S

    3phase and Neutral

    Hi Guys, I am fairly new on here, I am just studying my first ear on the 2330 Electrical course and i have tonne of stuff to ask you all which doesn't seem to make sense to me yet. Well here goes with the first thing regarding (3 load phase and the neutral wire). I think i understand...
  20. K

    balancing 3phase domestic

    I find myself in the position of having to balance a 3phase domestic installation. The supply comes into a large main house, with 16mm 3c swa to garage (incorporating 8kw sauna, snooker room with heating) and 25mm 3c swa to Pool House (incorporating kitchen, water boiler, water heater etc)...
    • knight1
    • Thread
    • 3phase aus balancing domestic electricians' talk garage house water
    • Replies: 1
    • Forum: Domestic Electrician Forum
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