A 12 gauge wire can handle a maximum of 41 amps. This amount is for chassis wiring. If you need the maximum amps for power transmission it is 9.3. You can find more information here
http://www.ask.com/webanswers/Consumer_Electronic...

A #12 copper wire with an insulation factor of 75 or 90 degrees C is rated at 20 amps. A 12 AWG wire should not be connected to a breaker larger than 20 amps. The wire is capable
http://wiki.answers.com/Q/How+many+amps+can+12ga+c...

A 10 gauge wire will carry 55 amps for chassis wiring & 15 for powe...
http://www.chacha.com/question/howmanyampswill...

your breakers in your house are 15 amps and 20 amps for duplex recepticles in your house.to be safe use a cord rated for 15amps.then ohms law is amps x volts = watts.so 15 x 120 volt
http://answers.yahoo.com/question/index?qid=200711...
