Does your machine run on petrol or manual labor? In that case, listen for an engine or someone complaining. I'm certain 99% of washing machines are powered by

Does your machine run on petrol or manual labor? In that case, listen for an engine or someone complaining. I'm certain 99% of washing machines are powered by electricity, and if you live in 120V town and need 3 phase you can monitor power using the magnetic field on one of 3 conductors.