Quote Originally Posted by Green Apple View Post
One other thing that should be done is to replace a power connector because the one that comes with 2.2kW spindle is not rated to 10A, but to something way below it.
About a month ago my HY VFD went up in smoke due to an arc that went across pins of my spindle power connector.
Today I'm looking at a new Altivar 320 to replace it and I need help with setting it up Altivar 320 VFD + ESS Smoothstepper + Mach4 + Gecko G540
You are correct, some suppliers supply undersized/under rated connectors. Full load current of a three phase motor is not split between phases. However your spindle might never draw the full load current. But if your motor is rated for say 10A that means ten amps per phase and you should have a cable and plug that is rated minimum 10A...:)

...just to add, a loose connection is obviously something that will likely damage any connector no matter the current rating