Phantom Electric Loads
Information from Care2 site
Excerpted from Real Goods Solar Living Source Book, edited
by Doug Pratt and executive editor John Schaeffer.
Many modern
appliances remain partially on when they appear to be turned off. Anything that
can be powered from a remote control must remain partially on to receive the
"on" signal from the remote.
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Simple
Solution:
- Anything with a clock-VCRs,
coffee makers, microwave ovens-also use a small amount of power all the
time. And anything that uses a "power cube" in the AC socket,
such as answering machines and electric toothbrushes, use very tiny
amounts of power, maybe only a watt or two, but they make the inverter
stay turned on and running 24 hours per day.
- The solution for clocks is
battery power. A wall mounted clock runs for nearly a year on a single
AA rechargeable battery. Look for good quality battery powered alarm and
other clocks. Clocks on house current are ridiculously wasteful.
- Watch out for those small
cube-shaped transformers that plug into the wall outlet to power a lower
voltage appliance. These villainous wastrels usually run horrible 60
percent to 80 percent inefficiency (which means that for every dime's
worth of electricity consumed, they throw away six or eight cents
worth). We recommend that power cubes be kept on plug strips or
switchable outlets that can be switched off when not in use. Electronic toothbrushes,
for example, use very little power themselves, but their charging
systems are grossly inefficient. If it has a power cube put it on a
switchable outlet that can be switched off when not in use.
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Is a 'Phantom' Stealing Your Electricity?
Phantom Loads
(PDF) 
... November 1993 Energy Efficiency Phantom Loads Richard
Perez Just because the switch says “OFF” doesn’t mean a device is not consuming
electric power. ...
Electric
Homes (PDF) 
... It’s also important to watch out for “phantom loads.”
A phantom load is an electric device that continues to draw power
even though the device is not switched “ON”
Positive Energy : Guide for Electricians
Electric
Consumption 
... answers can be found with a little bit of investigation and one of
the newly available portable electric meters ... We call these
on-while-off loads Phantom Loads. ...