It is hard to find this information, and the power consumption varies
widely across manufacturers and models. I have done some testing on
appliance timers, and using a Kill-A-Watt power meter I have found the
power consumption varies from under a watt continuous to more than 5
watts. One of the best is a Noma model I use for grow lights (less than
a watt), while one of the worst was also a Noma model (rated for outdoor
use and switching up to 1500 watts).
I had no success looking through vendor specifications, or writing to
the manufacturers.
Given the function of the device (timer), I don't think you will be able
to find one that consumes power only when the controlled device is on.
If you have an appliance power monitor, you could build a testing rig.
Assuming that you are starting from a standard medium Edison base for
the light bulb, and want to put the timer between it and the bulb, there
are simplex outlet receptacles that screw into the light socket (to plug
in the power monitor) and 2-prong plug to socket adaptors (to act as the
controlled device). Just insert the timer where appropriate downstream
from the monitor to get the desired data. If you don't like the power
consumption, take it back to the retailer.
If you collect such data, please post it for reference.
Darryl
Ken Dunn wrote:
Hi all,
I hope the cross-post is OK. I'm looking at adding a photo-sensitive
lighting timer for my lamp post light. However, I'm having a hard
time finding the energy consumption of the timer itself. Our lamp
post light is already on a photo sensor and we use a CFL bulb.
Ideally, the timer will only consume energy while the light is on and
it should consume a watt or less in order to make it practical and
beneficial. I can't seem to find that information, though. Any help
you might be able to provide would be appreciated.
Thanks,
Ken
--
Darryl McMahon
The Emperor's New Hydrogen Economy (in trade paperback and eBook)
http://www.econogics.com/TENHE/
Latest review of The Emperor's New Hydrogen Economy in Greenlife Magazine
http://www.econogics.com/TENHE/tenheGLspring2009.htm
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