Oops, I hit a landmine with that one. Let me clarify that to mean in the context of it being a substation serving ONLY my own house, like the Dell dudes'.
Some years ago in the Air Force I took the lineman's CDC (Career Developement Course) and exams to see how I'd fare. Passed with score of 86.
I had actually considered becoming a lineman, but I didn't because I can't stand heights. (Makes climbing and bucket work impractical.)
Working around high voltage doesn't really bother me (I did make contact with a live 12kv padmount switch, wearing all appropriate PPE thanks to a really cool foreman I knew), and have a facination with power equipment in general. I told the foreman, half-joking, that if I came upon a transformer fire, I'd probably bring out the hot dogs and 'smores.
Seriously, I've also been too close to some rather violent equipment failures to actually try such a thing. My very first encounter was when a pole-mount tx got hit by lightning as I rode by on my bicycle. My friend and I both got knocked on our little butts and had nightmares for weeks. I was around 7.