Eustacian wrote:If a stereo is rated for "500 watts audio output" does that mean it consumes 500 watts of electricity? Are audio watts the same as electrical watts?.
Carmiac wrote:A watt is a watt is a watt is a measure of energy over time. Specificaly a joule per second. A joule is the amount of energy required to raise one gram of water by one degree Centigrade.
Axiom wrote:Carmiac wrote:A watt is a watt is a watt is a measure of energy over time. Specificaly a joule per second. A joule is the amount of energy required to raise one gram of water by one degree Centigrade.
[nitpick]
Are you sure? The [small] calorie is defined as the amount of energy required to raise the temperature of 1 gram of water by 1 degree C. It takes about 4.2 joules to raise 1 gram of water by 1 degree C.
[/nitpick]
back to lurk mode
Eustacian wrote:Hello everybody,
Real simple question here - you'd think I'd know this or have found the answer by now. Anyway, here goes.
If a stereo is rated for "500 watts audio output" does that mean it consumes 500 watts of electricity? Are audio watts the same as electrical watts?
Just a little shocked to realize that my surround sound system may be consuming as much as kW while watching a movie, that is a frightening amount of waste.
So what method do you recommend for determining the power consumption of a 350 hp ac electric motor running 3 phase?
The use of a suitable power meter on the circuit in use. Most industrial monitors will have suitable adaptors for connection to virtually any power system.
Here is an example of a high-end portable device, but less sophisticated devices are available.
MissingLink wrote:So what method do you recommend for determining the power consumption of a 350 hp ac electric motor running 3 phase?
MissingLink wrote:Or the power consumption for all the lights in an entire bay of a large inductrial plant?
MissingLink wrote:Or the power cumsumption for a 3 phase 7.5 hp ac motor that is being run by an AC drive?
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