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True only if volts& amps were calculated as complex values??
Phasors?
(Oh, AND of course IFF that "-" between "Volt" and "amperes"
indicates MULTIPLICATION rather than subtraction ;-) )
wiki is there to be IMPROVED upon by those who know!!
My understanding is that most residential meters DO just multiply rms
volts& amps - taking no account of the reactive, phase difference.
Distribution systems DO need to be designed and built in terms of
Vmax and Imax.
Phase differences make for inefficient.
SOMEbody has to pay for the 'excess' V& I that gets designed into
the dist. system.
Commercial users are not a gullible as res. users so THEY insist on
(and GET) True Power meters.)
(I've heard rumors that a commercial user can get a break on their
rates if they have a capacitive rather than inductive reactive load.
It helps balance all those motors that MOST industrial users have.)
.
At 5:20 PM -0700 7/24/11, Bernard Cleyet wrote:
"Volt-amperes measures all power passed through a distribution
network, including reactive and actual. This is equal to the product
of root-mean-square volts and amperes."
Electricity meter - Wikipedia, the free encyclopedia
No?
bc a result due to a friend's going solar.
p.s. power is power not imaginary power -- there is virtual work tho.?
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_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l