phases

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  1. F

    3 phase polyphase meter,, landis an gear

    i am sepperating a small unit from the main building next door. the owner wants the said unit on own supply and on own meter to resell the electricity , i have seperated the circuits involed , a 10amp lighting cct, a 32 amp ring final and a 3 phase 32 amp isolator . i have placed the ccts...
    • fancypantsyeah
    • Thread
    • 3 phase electricians' talk gear meter phase phases supply wired
    • Replies: 1
    • Forum: Commercial Electrical Advice
  2. N

    Help: Light commercial with three phases - Fit and inform still?

    hi, Haven't done a three phase systems and have always assumed that staying under 16amps per phase can be fitted, and DNO informed afterwards. Is that correct or does the DNO have to approve prior to installation. thanks in advance. RN
  3. V

    3 phases in one switch box

    hi all ive been asked to wire some high bay lighting in a unit from a tp+n c/u. my question was as its accross all 3 phases what do you do about the switch end? i dont like the idea of 400v in a metal switch box. ive got 4 rows of 400 hids and want them switched in rows. ta all vitoboy
  4. rmaynard

    Drop over 3 phases

    I have installed a 16a 3 phase extract fan, when doing my testing after id finished i had 403v between phases, boss thinks this is ok but i think its a bit low, anyone?
    • rmaynard
    • Thread
    • aus between electricians' talk phases under voltage
    • Replies: 9
    • Forum: Australia
  5. dlt27

    3 phase meter

    The company I work for sent out some guys to connect up some temps through a 3 phase meter. Now the circuit was fed via an existing board with a 63A breaker and the existing board was backed up by a 160 amp mccb.(plus an rcd for the sub-main). The 3 phase meter so I have been told went up in...
  6. S

    Wylex bs 4293 100ma type s RCD Tripping times

    Does anyone know what the tripping times for an Wylex bs 4293 100ma type s RCD are? Ive been searching the net and just keep getting more and more confused about this i know an bs6009/9 should trip within 130ms-500ms but cant make headway for the tripping times for an older bs4293 rcd.
    • Superspark23
    • Thread
    • 100ma aus electricians' talk phases rcd rcd tripping testing times tripping tripping times type within wylex
    • Replies: 2
    • Forum: Australia
  7. E

    Architect Specification for PV job

    Hi Guys Just wondering if anyone could help me with this. I have to submit a quotation for a job but its larger than I have done before. The electrical AC side I havent a problem with its more the PV spec. So here is what I'm working with- The contractor shall allow for the supply and...
  8. W

    3.6 Kw PV with 6Kw wind

    Hi, I'm due to install a 3.6Kw system on a property with an existing 6Kw Wind turbine. I have applied for it with the DNO because it already has the 6Kw wind turbine. The installation is 3 Phase and I intend to connect the PV system to a different phase to the wind turbine. Has anybody had...
  9. D

    FIT for 10KW 3 phase

    just about to price my first 10KW 3 phase install and was wondering if the first 4Kw are at 43.3p and the remaining 6Kw at the lower rate or would the whole system be charged at lower rate? If as I suspect the whole job is at the lower rate then a 5Kw system would never be viable (for future...
  10. K

    3.6kw system into 3 phases

    An ex farm that i visited today would like to install a 3.6kw system feeding into a single phase which is currently supplying an outbuilding. The remaining 2 phases supply the house, Assuming that the DNO is happy with the imbalance, if we installed the system would the energy generated on this...
  11. P

    HeLp with 3 phase

    Hi guys just need some help with 3 phase.I have done some theory on it a while back but not alot.So I get the fact there are 3 phase's and a neutral The three phases are colour coded and go to three separate parts on the 3phase db,Is this correct?What next? For the final circuits?Cheers for any...
    • p11jor
    • Thread
    • 3 phase aus electricians' talk help neutral phase phases
    • Replies: 7
    • Forum: Australia
  12. D

    Please Explain: Symmetrical fault current

    Im doing my 2391 course and it was quickly mentioned about symmetrical fault current when talking about PFC testing. It was just mentioned and not explained so can anyone explain what this means. My first thought is that 3 phases shorted together would cancel out and leave 0 volts?? But...
  13. D

    separation of 13amp sockets on different phases

    when separating 13amp sockets on different phases by 2/2.5m -the only concern is physical separation of the sockets and not leads and appliances? am i right in thinking any risk to customers/users from appliances on different phases is very small?
  14. 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 electricians' talk phases supplied
    • Replies: 28
    • Forum: Australia
  15. 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...
  16. 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 electricians' talk limit phase phases single single phase
    • Replies: 4
    • Forum: Australia
  17. 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...
  18. 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...
  19. 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 electricians' talk fuse fuses ideas phases problem supply units
    • Replies: 7
    • Forum: Australia
  20. 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...
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