There is a height in the elec code for overhead wires on residential properties - 12' over driveways I believe and it's supposed to be 16' over roads. When buying a house you can bring this up during the home inspection as a lower wire isn't up to code.
When I ran power to my garage 12 years ago (the previous owner had a regular 110 line run across and tied to a tree branch...) I looked at underground - WAY more expensive as you need to dig of course, put it in conduit and running electricity in wires makes the wires hot so wires run 'in air' (as in overhead) can be smaller gage so cheaper than those underground.
12' is close - i've had to hold them up (with a rake or 1x4) to get dumptrucks and such in (for gravel or material delivery).
My TT fits - it clears all the hard stuff but whacks the antenna (which is spring loaded).
I did have a fed ex truck snagged the wire, a big box truck- he didn't see it and stopped just short of pulling it off the house.
Jill & Chris, Wills (14) Evie (11) & Toby our collie (5)
2011 Grey Wolf 28BH
2013 Chevy K1500 Crew w/ Reese StraitLine Dual Cam
Nights camped 2011: 11 2012: 18 2013: 12 2014: 12 2015: 13 2016: 3