Get the proper power meter one.

My Efergy whole house meter reads 76W for my PC/monitor/ADSL modem when in
standby. A proper power factor corrected meter and what I am paying for
reads only 15W.

"blackhead" wrote in message
...
First off, does the electricity company's meter multiply the voltage
by the current to calculate the power, regardless of the phase?

I'm looking at whether to buy a wireless electricity monitor such as
this:

http://www.amazon.co.uk/Owl-Electris...lectricity/dp/
B000LQ79Q6/ref=sr_1_1?ie=UTF8&s=electronics&qid=1202911664&sr =1-1

which clips around the input meter lead so measuring the current and
multiplies this by a set voltage to calculte the power consumption.

Or to buy a power monitor that actually measure the power used by the
device:

http://www.amazon.co.uk/Plug-In-Powe...gy-Monitor/dp/
B000Q7PJGW/ref=pd_bxgy_ce_img_b?ie=UTF8&qid=1202911664&sr=1-1

Thanks