Posted by Phil on June 17, 2007, 11:42 am
So I noticed that my cable box is using 20-30W while it's *off* so I hooked
it along with the cable modem wall wart and some power-sucking-while-standby
speaker systems together on one power strip and set a timer on that power
strip so that it's not on in the middle of the night. What do you guys do
to nip low-drain 24-hour power usage? What other things would be good to
put on a timer? Water heater not so much, I've discovered.
--
Phil
Posted by Dennis on June 17, 2007, 12:02 pm
>So I noticed that my cable box is using 20-30W while it's *off* so I hooked
>it along with the cable modem wall wart and some power-sucking-while-standby
>speaker systems together on one power strip and set a timer on that power
>strip so that it's not on in the middle of the night. What do you guys do
>to nip low-drain 24-hour power usage? What other things would be good to
>put on a timer? Water heater not so much, I've discovered.
How much power does the timer use?
Dennis (evil)
--
"There is a fine line between participation and mockery" - Wally
Posted by Logan Shaw on June 17, 2007, 12:55 pm
Dennis wrote:
>
>> So I noticed that my cable box is using 20-30W while it's *off* so I hooked
>> it along with the cable modem wall wart and some power-sucking-while-standby
>> speaker systems together on one power strip and set a timer on that power
>> strip so that it's not on in the middle of the night.
> How much power does the timer use?
I just measured an old mechanical lamp timer with a Kill-a-Watt, and it
seems to draw about 1W of power. The cable box shouldn't have to be off
very much of the time for that to pay off.
- Logan
Posted by Phil on June 17, 2007, 10:48 pm
Logan Shaw wrote:
> Dennis wrote:
>>
>>> So I noticed that my cable box is using 20-30W while it's *off* so
>>> I hooked it along with the cable modem wall wart and some
>>> power-sucking-while-standby speaker systems together on one power
>>> strip and set a timer on that power strip so that it's not on in
>>> the middle of the night.
>> How much power does the timer use?
> I just measured an old mechanical lamp timer with a Kill-a-Watt, and
> it seems to draw about 1W of power. The cable box shouldn't have to
> be off very much of the time for that to pay off.
> - Logan
My mechanical timer is 1W, too, tested with a KAW.
--
Phil
Posted by Don Klipstein on June 17, 2007, 12:23 pm
>So I noticed that my cable box is using 20-30W while it's *off* so I hooked
>it along with the cable modem wall wart and some power-sucking-while-standby
>speaker systems together on one power strip and set a timer on that power
>strip so that it's not on in the middle of the night. What do you guys do
>to nip low-drain 24-hour power usage? What other things would be good to
>put on a timer? Water heater not so much, I've discovered.
How did you get that measurement for cable box power consumption? It
sounds awfully high to me.
Consider that power going into a cable box is nearly enough 100%
converted to heat. Consider what 20-30 watts of heat is:
A 27 watt compact fluorescent produces about 5 watts of light and close
to 22 watts of heat.
A 60 watt incandescent has a little over half its power input becoming
radiation, mostly infrared, causing heat to materialize where the
radiation is absorbed. A little less than half the 60 watts becomes heat
at the bulb surface.
If the cable box does actually consume 20-30 watts, then I think it
makes sense to put it on a timer. Since you have other power suckers on
the same power strip, I think the timer is a good way to go.
If cable boxes that consume 20-30 watts when "off" are actually common,
then I think some energy standard is in order to reduce that. That is
about 14.4-22 KWH per month.
- Don Klipstein (don@misty.com)
>it along with the cable modem wall wart and some power-sucking-while-standby
>speaker systems together on one power strip and set a timer on that power
>strip so that it's not on in the middle of the night. What do you guys do
>to nip low-drain 24-hour power usage? What other things would be good to
>put on a timer? Water heater not so much, I've discovered.