If the breaker trips on two different power circuits it must be that the washer is drawing too much current. This can happen with improper grounds, so look for that, but the most likely cause is your motor is drawing too much power. This will happen if the motor is failing, or if there is a jam which is causing the motor to straing to start and draw too much current.

If the problem occurs at the beginning of the cycle it is more likely the motor failing, but you will have to check out the machine and the motor.

Good luck