factor

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  1. C

    grouping of cables factor

    hi all, the job i am doing for my first assesment is garage supply in conduit(i have previoulsy posted about that) and replacing the c/u, on assessing the job today for the c/u all of the cables come down from the ceiling in a wooden box covered with a wooden front, i removed the front cover off...
  2. R

    power factor correction units

    hi guys i need advice my friend passed on some remedials for a factory i mainly do domestic work however given the climate i fancy taking it on but part of the job is installing a new pfc unit which ive never done how hard are they to do should i leave that part to a more suitable spark thanks...
  3. T

    grouping factor question

    i was thinking of the installation i have nearly completed and i was thinking about the grouping factor issue, the cables are grouped in pvc trunking leaving the consumer unit and travel about 4 meters before entering ceiling before dispersing into seperate circuits.would a correction factor be...
  4. T

    pvc trunking limits?

    just a thought, i have been using some maxi trunking to suply cu going verticaly down the wall was wondering how far verticaly can you go with trunking before you need to support cables? also how do you judge how many cables to put in?
    • thekingiam
    • Thread
    • cable cables factor meters pvc trunking
    • Replies: 5
    • Forum: UK Electrical Forum
  5. B

    grouping factor of a cable with irratic use

    Hi Guys I am trying to work out a system to be run in a small church like premises with irratic use.the system is to be in trunking so grouping is going to be effected by using the loadings of each circuit(which is not for long periods)is there any way of over coming these restriants I know I...
  6. C

    Cable factors in trunking, conductors over 25mm^2.

    Hi All, I have been searching the forum but can't find this anywhere. Can you please see if my interpretation of this is correct: 50x50 trunking, 2m run with 1 90o bend. 4 x 50mm conductors, 1 x 35mm conductor. As there are no factors for over 25mm2 I have to work it out manually 50x50 =...
  7. sythai

    Conduit cable calcs....help please ?

    Just calculating my In... conduit with singles run. For the grouping factor - Cg it states number of circuits If I have 2 circuits, but this consists of 18 x singles (e.g 1 x ring = 6 and 4 x radials) Would this still be a factor = 0.75 ? Thank you Sy
  8. M

    Power factor

    Can any body give me the formula for power factor Given:kw=630 kvar=400 PF=? Thanks.
  9. S

    3 Phase cable sizing help?? Proceedure?

    i'm after a little help with cable sizing. I have tried reading my IEE design guide, and still struggling to get to grips with the correct proceedure to follow for sizing cables. I have always struggled a little with this, but thus far my knowledge goes (albeit shaky)... It>_ In/(Ca x Cg x Ci x...
    • Smudge
    • Thread
    • 3 phase aus cable cable sizing cables factor help phase power sizing
    • Replies: 8
    • Forum: Australia
  10. P

    correction factor for discharge lighting

    hi guys, just a quick calc here:- 4 X 400w rated lighting, is my calculation for this 1600/230 = 6.9amp X correction factor Type C circuit Breaker. thanks phil
    • p11jor
    • Thread
    • aus factor lighting
    • Replies: 3
    • Forum: Australia
  11. G

    Power Factor Correction Capacitors

    Hi, i am looking to correct the p.f. on a number of individual motors. I hope to use a small capacitor bank position locally to each motor. Can anyone recommend a brand/shop where I can get hold of these? Thanks,
    • gerard
    • Thread
    • canada capacitors factor power
    • Replies: 1
    • Forum: Canada
  12. T

    power factor correction

    Well time has come to further my knowledge, now I know I was taught these at college but once i left i realised it was all about thinking from the neck down! So I know the rule of thumb is .8 but how do I apply these into calculations:freak:
  13. B

    200 x 200 trunking capacity

    What is the maximum cable capacity (factor) for 200 x 200 steel trunking 2metres up the wall with a 90 degree bend three metres along the wall And what is the cable factors for 1.5mm and 2.5mm singles Don't have reference books to hand
    • brizospark
    • Thread
    • aus cable capacity factor singles trunking
    • Replies: 5
    • Forum: Australia
  14. S

    X factor

    Anyone know any decent sparks in the London area ? Might be needed on the X Factor to stop all the saddos topping themselves cos its broke :chillpill:
  15. S

    Power Factor Fudger!?!

    Hello. I'm new and I'm not an Electrician. I have just about got my head around why these little plug in power factor correction devices don't work. I was wondering whether a device could be made that does the opposite? i.e. gives you a poorer power factor and thus lower bills. Or have I got a...
    • Sunnydaze
    • Thread
    • aus factor power
    • Replies: 2
    • Forum: Australia
  16. L

    RLC Circuits - Phasors

    Hi Guys, Just wondering if anybody would mind explaining the main purpose of working out the lead/lag of current compared to voltage in RLC circuits? Is it to do when selecting/derating cables for current carry capacity? Is there any other things that happen? maybe extra heat build up in...
    • LearnerDave
    • Thread
    • canada circuit circuits current factor power volts
    • Replies: 5
    • Forum: Canada
  17. K

    Please HELP me (POWER FACTOR ISSUE)

    Hi folks, My client have a generator set rated 450KVA, 220Vac, 3P, 60Hz. Recently, the during start up of operation, the generator shut down because of an unknown trouble. When I check the power analyzer (I used for monitoring), the event that caused the shut down was "PF" which means...
    • keynotez
    • Thread
    • aus factor help issue please
    • Replies: 9
    • Forum: Australia
  18. K

    Power factor

    Hi folks, My client have a generator set rated 450KVA, 220Vac, 3P, 60Hz. Recently, the during start up of operation, the generator shut down because of an unknown trouble. When I check the power analyzer (I used for monitoring), the event that caused the shut down was "PF" which means, POWER...
    • keynotez
    • Thread
    • aus factor power
    • Replies: 2
    • Forum: Australia
  19. S

    Demand Factor 'v' Diversity Factor - which is your preferred method

    Gents, I'm applying for CEng through the CIBSE TRR route, my chosen subject determining maximum demands within commercial properties. I've been reading through some of the previous threads concerning manximum demand calculations and note almost everybody has a completely different approach...
  20. J

    volt drop rule of thumb

    Hi Guys, could anyone explain to me the 1.2 volt drop rule of thumb? i understand the 3% for lighting and 5% for other circuits. any help would be welcome studying for 2391. Thanks in advance.

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