Well for me, I stumbled into the trade at 22 yrs old. (layed off truck driver) Wasn't sure what a screw driver was. A friend of a friend needed help, so there I was.
Started out doing small resi stuff and fire alarm, that fizzled and ended up with a big contractor. Did construction and commercial fire for a while. They must of thought I was kinda' intelligent coz they put me in service.
So with limited commercial service installs I learned how to diagnose and repair what others had designed and installed, I did some but not the heavey thinking part.
thats why I like this site, I'm getting a better knowledge of how to know what and why.
I can diagnose and fix it with great confidence, but why it was installed that way, I'm still learning.
