Meant to add that the best maintenance technicians were consistently ex-navy and people who grew up on farms.
Showing that ‘necessity is the mother’ of technical prowess IMO.
Last job I had was a large nursing home five stories. We had an air handler motor burn up. It was three phase and a six wire motor. We had a motor same frame code, rpms, and HP, but it was a three wire motor.
My boss said well we're screwed we'll have to wait for the bad one to be rewound. I told him lets bolt it up then give me about thirty minutes and a guy to stand close by with a 2X4 LOL. I made the controller hot and energized then identified the phases of the controller leads coming to the motor and tagged them. Another thirty minutes I had it running and a very puzzled boss LOL.