was informed that a contractor (electrical) wired a motor, customer called us (hvac dept) and stated his motor is not running, only humming.
upon trouble shootin found that the motor was wired wrong, 208/230 3 phase line voltage. motor was found to be wired for 460 volts high voltage.
I know that on a 9 lead motor high voltage is in series & low voltage is in parallel. my question is what exactly made the motor fail?
Is it the higher current with the lower voltage wired in series?