I just upgraded to a servo on the z axis. I`m considering changing the y and potentially the x. I have two power supplies now. One is 54 volts 15 amp DC and one 32 volt 10 amp. How do I determine the maximum amperage draw of a servo motor to help me decide which power supply to use for the various motors. One of the cnczone members mentioned that its best to get a amperage reading when the servo is in a stall condition...under a maximum load. How is this accomplished in a test condition. The motor I have now was purchased from Jeff at homecnc.He mentioned that the maximum current draw is potentially 20 amps. At that rate Id need a new power supply totaling 60 amps. It seems a actual current rating is needed to make a reasonable estimate of true current .