phases

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  1. T

    bain marie supplied with 2 phases

    right folks wot kind of damage canb done to a single phase bainmarie, supplied with l1 and l3 and no neutral!!!!!!!!! was at job the day and some idiot had wired it like this .wonder y the client was saying the heat lamps were to hot and popping everyother day. also how did it work if there was...
    • Tosh
    • Thread
    • aus phases supplied
    • Replies: 28
    • Forum: Australia
  2. K

    Two phase, or two phases??

    Hi guys, Started a p.i.r today on an old small holding which used to be an active farm. From the poll, there are three cables coming into the farm house, two of these are phases and the therd seems to be neutral. One phase has the house consumer units and additions( its a six bed with 4 en...
  3. i=p/u

    single phase and 3 phase

    Q1.in most domestics its 230v and 100A main fuse. is there a limit on how many amps can be drawn when on 230v??????? could there be 500A drawn if cables are large enough Q2. as with 3phase 400v is there a limit on how many amps can be drawn??? maybe stupid question but just thinking , yas...
    • i=p/u
    • Thread
    • 3 phase aus limit phase phases single single phase
    • Replies: 4
    • Forum: Australia
  4. S

    10KWp system over the phases

    Hi I'm about to quote on a 10KWp system, which will be one of the first of my own as i am newly MCS accredited. I'm getting to grips with most of this but i have a couple of questions If i split it over the 3 phases can i do this install (all 3) as G83? If so then i guess i can do 3x 4KWp. So...
  5. C

    Reducing power bill by balabcing 3 phase power

    I have a 3 phase power supply from my power supplier and i was told that my electric bill was much higher than it should be because one phase draws plenty of power while my other phases do not and the cost is calculated on the highest demand and the cost is determined by the meter with the...
  6. DiscoDave

    Bang goes the supply fuses any ideas greatly recieved.

    Picture the scene, Last week I replaced a sub main and distribution board on a farm. I left site and about six hours later two of the phases dissappear. with in half an hour of the supply going down the standby generator was fired up with out problem. The following day the corp turn up...
    • DiscoDave
    • Thread
    • aus bang fuse fuses ideas phases problem supply units
    • Replies: 7
    • Forum: Australia
  7. P

    3 phase supply issues

    Hi I'm having some problems with a 2 phase supply and any help would be appreciated. I got a breakdown last week on a machine with a 3 phase motor, the contactor was burnt out and the motor windings also. The main contactors and overload have been replaced and the motor rewind completed and...
    • paul-k
    • Thread
    • 3 phase canada issues motor phase phases supply
    • Replies: 6
    • Forum: Canada
  8. J

    pfc on 3 phases

    when prospective fault testing a three phase circuit do you only need to do the short circuit test only on the 3 phases in turn due to result being twice that of the earth short circuit current due to the line voltage being twice the value?
  9. G

    110V vs 230V

    Hi, Had a question today. Why do the yanks use 110V and the UK use 230V? What are the costs and benifits? Which one is better? Any help with this one is appreciated.
  10. S

    What Is New Term For 3 Phase

    Hi, Can anyone help please? I can't remember what wording we use under the 17th Edition for phases. I know we have to use the term line conductor instead of phase conductor. But I am writing something that requires the correct terminology when expressing the 3 phases.
    • steverido
    • Thread
    • 3 phase aus conductor new phase phases
    • Replies: 2
    • Forum: Australia
  11. Mark42

    Distance between socket outlets on different phases

    Hi I can’t find this anywhere: what is the minimum distance between sockets wired to different phases in a large domestic installation? I’m sure in the same room is OK (encouraged even, for load balancing - but never in the same enclosure) but I remember reading somewhere years ago about a...
    • Mark42
    • Thread
    • between canada different distance domestic outlets phase phases roman socket times
    • Replies: 18
    • Forum: Canada
  12. C

    Circuits on phases

    Hi I was wondering if anyone could explain about circuits on phases, on sites that I work on we r given drawings with lighting circuits and power circuits and I get told we need to keep certain circuits on certain phases but dnt knw why, obv you have exp L1 L2 and L3
    • Cj24
    • Thread
    • aus circuit circuits factor loads neutral phases power
    • Replies: 9
    • Forum: Australia
  13. C

    3 phase meter

    Hi All, just registerd and my first post, so be gentle.. Question Regarding a Secondary 3 phase meter i installed on Friday. On Power up noticed that dial was running backwards. i tried changing 2 phases over and still running backwards, tried swapping other 2 phase over and you guessed it...
    • cmar79
    • Thread
    • 3 phase canada meter pairs phase phases rotation
    • Replies: 4
    • Forum: Canada
  14. F

    3-Phase 415V supply. How many circuits?!?

    Hi! I have recently changed my job and my employer has asked me to survey the existing electrical system. The main incomer is 100A 415V 3-phase and neutral and each phase and neutral is attached to a separate CU. This is how is breaks down:- L1+N= (100A CU) Handdriers in toilets, lighting...
  15. S

    ipf and ka on 3ph boards

    just been reading about measuring pfc on 3ph boards and the niceic book states that you should double the line to neutral/cpc (highest) and record it. Does this mean if the doubled result is higher than 6ka that even single phase mcb's should be rated higher than 6ka? Any thoughts? Thanks Sarge...
  16. P

    Two Voltage/CCurrent Values on Motor

    Motor Tags.doc - File Shared from Box.net - Free Online File Storage Got a few queries about the info on the motor tagsin the pics in the attachment. In the first one in the Voltage box, it has 220 Delta and 380 Star. Does this mean that when the motor is running in delta config, the voltage...
    • pprendeville
    • Thread
    • calibri canada delta motor phases values voltage volts
    • Replies: 4
    • Forum: Canada
  17. P

    phases

    just want to check about sockets close together on different phases or can you plug things in on different phases?:confused: the problem is that servers have 2 power supplys for backup if the power goes then the ups takes over but i have just installed a 15 kva ups to feed the DB (which i...
    • peteludman
    • Thread
    • canada phases
    • Replies: 10
    • Forum: Canada
  18. D

    Testing 480v system

    Hi there, i was called to a job by a customer to replace a distribution board that had suffered water damage within a farm building. The DB i was presented with was 2 - phase, with a measured 250v per phase and 480v between phases. I have never seen these before and no-one in the...
  19. S

    resistance between phases?

    hi just wondered how high the resistance between phases should be on a 3 phase board?
  20. G

    3 Phase Billing

    Got a query about how a 3 phase domestic supply is charged by the supplier. 3 phases enter the meter (digital), does this work out the actual energy used or does it mesure the highest phase and read accross the other two?? basically its a domestic supply with inballanced loads. The sockets and...
    • Graeme Harrold
    • Thread
    • 3 phase billing canada digital meter phase phases supply
    • Replies: 2
    • Forum: Canada

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