yardbird
15-01-08, 11:56 PM
I posted this on another forum because it seems like good science to me, but I would like to know whether any of you can spot any flaws with the logic:
So-called "125W" envirolites actually only use about 80 real watts per hour at your electricity meter.
The "125W" version is actually rated at 0.35 amps, so if you consider the equation:
Watts = Amps x Volts
And dial in the numbers for UK electricity supply
Watts = 0.35A x 230V
You get the result
80.5W = 0.35A x 230V
So the "125W" model only uses 80.5 real watts
The "200W" model is rated at 0.56A so:
128W = 0.56A x 230V
Or only 128 real watts
I can't find any data for the "250W" model, but it's reasonable to assume that it uses the same as two "125W" versions
80.5W x 2 = 161W
So a "125W" envirolite uses less electricity than a 100w incandescent light bulb, a "200W" envirolite uses slightly more than two 60W incandescent light bulbs, and a "250W" envirolite uses about as much as a 100W and a 60W incandescent light bulb together.
Using the "125W" model the electricity consumption during an 18 hour light cycle will be
80.5W x 18 hours = 1.449 KW/h
Or the same as switching on a switching on a 1000W one bar electric fire for an hour and a half each day.
Cheap as chips, and nobody is going to notice anything unusual about your electricity consumption patterns, IMO.
http://www.plugandgrow.co.uk/files/envirolite_technical_specifications_en.pdf
So, your Envirolites may not be using as much juice as you thought they were. :cool:
So-called "125W" envirolites actually only use about 80 real watts per hour at your electricity meter.
The "125W" version is actually rated at 0.35 amps, so if you consider the equation:
Watts = Amps x Volts
And dial in the numbers for UK electricity supply
Watts = 0.35A x 230V
You get the result
80.5W = 0.35A x 230V
So the "125W" model only uses 80.5 real watts
The "200W" model is rated at 0.56A so:
128W = 0.56A x 230V
Or only 128 real watts
I can't find any data for the "250W" model, but it's reasonable to assume that it uses the same as two "125W" versions
80.5W x 2 = 161W
So a "125W" envirolite uses less electricity than a 100w incandescent light bulb, a "200W" envirolite uses slightly more than two 60W incandescent light bulbs, and a "250W" envirolite uses about as much as a 100W and a 60W incandescent light bulb together.
Using the "125W" model the electricity consumption during an 18 hour light cycle will be
80.5W x 18 hours = 1.449 KW/h
Or the same as switching on a switching on a 1000W one bar electric fire for an hour and a half each day.
Cheap as chips, and nobody is going to notice anything unusual about your electricity consumption patterns, IMO.
http://www.plugandgrow.co.uk/files/envirolite_technical_specifications_en.pdf
So, your Envirolites may not be using as much juice as you thought they were. :cool: