Only once, when 220V was installed, I had someone come and do it. I watched closely, though, and did it myself the second time around. Worked fine, none of the machines burned.

Was just telling a friend last night how I want to learn how to do some basic wiring so I can do things like garden lights for myself.

It works, but everyone will notice that it was done by someone who doesn't have the patience nor gives it the importance to be perfect.

Next time, use it like a meditation.