I'm not sure about your math. Let's look at it. A 13watt lamp with a power factor of 1.0 will in fact draw 13 watts of power. if the PF is .6 then you would simply multiple the 13w X 0.6 = 7.8 watts.
The most common PF of CFL is .90 that would make the actual consumed wattage as 11.7.
People should know that for exemple, to power a 36watt CFL the power plant must pump to their homes 72VA which is in fact 72watts. In most countries they don't charge the residencial consumer for that, but industries could never use hundreds of CFL with low PF - Power Factor. The PF of the CFLs we buy are at best 0.6. So a 13watts CFL are actually consuming about 21watts - 13 / 0.6. People should be aware of that and avoid buying above 30watt CFLs to replace a 60watts incadescent bulb
STRINGMJ,
DIVIDE, NOT MULTIPLY
b83mcley 1 year ago
I'm not sure about your math. Let's look at it. A 13watt lamp with a power factor of 1.0 will in fact draw 13 watts of power. if the PF is .6 then you would simply multiple the 13w X 0.6 = 7.8 watts.
The most common PF of CFL is .90 that would make the actual consumed wattage as 11.7.
stringmj 2 years ago
People should know that for exemple, to power a 36watt CFL the power plant must pump to their homes 72VA which is in fact 72watts. In most countries they don't charge the residencial consumer for that, but industries could never use hundreds of CFL with low PF - Power Factor. The PF of the CFLs we buy are at best 0.6. So a 13watts CFL are actually consuming about 21watts - 13 / 0.6. People should be aware of that and avoid buying above 30watt CFLs to replace a 60watts incadescent bulb
raursf 4 years ago
This has been flagged as spam show
I invite everyone to read this article on CFL and the incandescent ban. It's very englightening - no pun intended! ;)
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sound+westhost+com/articles/incandescent+htm#std
raursf 4 years ago
I have 3 cfl's in my bathroom, had to replace them after 3 years. the things are expensive, contain murcury, and are made in china.
fcharrua 4 years ago
I switched to CFL's in my whole house. It cost me $110 (ouch!) but I will get the money back from reduced power costs.
Globalpack 4 years ago