How do power-up a garbage disposal with 12 volts

[Margaritaman]

Thanks to all who will humor me with a serious answer. Solving my problem won't save the world but it will be fun.

I am using a 3/4 hp garbage disposal to operate a mobile blender. The unit specs at 8.1 amps and is an induction motor. I have to use this unit because the lesser units do not have stainless steel mechanism and would be a health hazard. I want to be able to plug the unit into a normal 110 outlet when stationary and be able to operate the motor while mobile.

I have tried running a 1000 w power inverter which according to my simple calculations should be more than enough to power the motor. It simply keeps tripping the overload relay.

My question is, is there a relatively simple way to reduce the electric draw required by the motor at start-up so as to not trip the breaker? I understand a simple dimmer-type devise will not work on an induction motor.

I am open to other suggestions.

Thanks

 

[sparkey]

keep in mind that motors will have a current spike on start up (as much as 600%). is the power inverter you have 1000w peak or sustained?

so at 8.1FLA, your 3/4Hp motor starting under load could generate 48.6A. this would undoubtedly trip your overload (at 5346w max). most inverters are not designed to withstand the punch of a motor like that.

your probably looking at a 2500-3000w inverter to take the surge.