lowryder 2 cfl vs hps

700m45 said:

Hmmm, That video should be longer. When you put that lamp on...it doesn't give you the maximum light, is it? ...It takes a while(warms up or smth). So here's my question: Is it possible that it takes less electricity when you put it on and more when it has warmed up and gives you the maximum light?

Click to expand...

s'possible. when i get around to it I'll get a power meter and let ya know what I find out.

ceestyle said:

s'possible. when i get around to it I'll get a power meter and let ya know what I find out.

Click to expand...

that would be nice to seee!

found this from UK420 forum:

"Edit - these were 200W remote ballasted lamps. This IS important for enviro users to know as the self-ballasted ones have a Power Factor (PF) of 0.7. The remote ballasted ones have a PF of 0.97 which makes them 25% more efficient. The result is pretty much 25% more lumens from the lamp (or 25% less power used and the smae lumens, there's a lot of different "enviros" out there). Google on "power factor correction" if you want more knowledge on why this is so. "

Originally Posted by yardbird
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.

700m45 said:

Originally Posted by yardbird
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.

Click to expand...

i work for an energy consulting company.. i was about to do these calculations as well until i read this post. finally an intelligent calculated response for the thread lol. cheers