I thought I had left this urban myth behind long ago. I first met it in 1983 and re-met it over the weekend.
It goes like this: I don't turn lights off because it uses more power to turn them on and off than they use when on.
Really? I don't think so.
How much more? Lets say 100 times, for the argument. It's generous.
How long does it take to turn a light on? Let's say half a second, for the argument. It's generous.
100 times a half =50. It's generous. Squared.
So if you turn a light off for anything over a minute you will be saving more power than if you left it on. So turn it off, already.
And take that myth and bury it. Somewhere dark.
But a different question, same topic: It was suggested that the turning on and off of a power-saving fluorescent bulb shortens it's life and that, if you include the cost of the bulb, the economics can favour leaving it on. That complicates the calculation. I still don't like it though.
Anyone know about this?