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<jan@janhurst.com> wrote in message 
news:42948abb$0$28838$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
: Hello,
:
: I am studying an introductory electronics course and have been given 
the
: following problem:
:
: A small factory has the following loads operating from the 240Vrms 
50Hz
: supply
: a) Forty 50 watts incandescent lamps with unity power factor
: b) Thirty-five 40 watts fluorescent lamps with a lagging power factor 
of 0.9
: c) One 2400 watts air conditioning system with a lagging power factor 
of
: 0.65.
:
: I am asked to draw the complete phasor diagram and determine the total
: peak current drawn and overall power factor of the factory.
:
: I'm a little stuck :( I have some phasor diagrams put together which I
: am a little unsure of, but I don't really know how to determine peak
: current from this, can anyone shed some light or point me in the
: direction of some material to explain this sort of problem? I've been
: digging through a number of text books and am not really progressing.
:
: Thank you
:
: Jan