I have a sonic mouse repeller that says:
120v- 60Hz 12A. max
How many watts will it use each hour? Or each year?
2007-10-04 06:58:18 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
... and what's the minimum wattage of a solar panel required to run it? Is a 20 watt solar panel enough?
2007-10-04 07:00:55 · update #1
It says 12a, but it has an extra outlet on the side, so you can use it without losing a wall outlet. The 12a is the limit for whatever appliance you plug in.
How many watts would you guess the rodent repeller part actually is?
2007-10-04 07:54:52 · update #2
actually - very little
it is not 12 amps that is the same as say a vacuum cleaner
it is using milliamps - or thousands of an amp
and may use at most 4 watts an hour - about 4 dollars a year -
but they don't work anyway
see link
2007-10-04 07:10:36 · answer #1 · answered by eyeguy 2 · 0⤊ 0⤋
For a start, watts are used to measure power, not energy. Therefore you should be looking for watts, not watts per hour or per year.
Watts (Joules per second) are calculated by multiplying Volts by Amps; thus your device may use up to (120 x 12 = 1,440) Watts of power.
Since your solar panel produces 20 Watts, you'd only get 1/72 (about 1.389%) of the maximum performance from your device.
2007-10-04 07:07:48 · answer #2 · answered by general_ego 3 · 0⤊ 0⤋
Its wattage is 12 x 120 = 1440 watts (volts multiplied by amps)
A watt hour is a watt of power used for an hour and is an unit of energy.
2007-10-04 07:04:41 · answer #3 · answered by Swamy 7 · 0⤊ 0⤋
That seems like a lot of current to repel mice. That's almost as much as a hair drier. Are you sure it doesn't say something like 0.12 A or 12 mA?
2007-10-04 07:08:28 · answer #4 · answered by Shev 3 · 0⤊ 0⤋