I put in three 10 ga Romex dedicated lines myself. It's not difficult, surely not rocket science, but if you are not mechanically inclined, wiser to let an electrician do it (safety). Be sure that the electricity is off.
The hardest part (for this old man), was crawling 40 feet in a very tight crawl space, and digging two trenches in lava rock, for the two 8' dedicated ground rods. The only real pain with using 10 ga wire is when terminating the ends (stiff wire), and getting them to cooperate sharing space in the small electrical baxes - Ha!
I terminated each dedicated line with Porter Ports - very worthwhile.
As for the sub-panel, I used a 12 circuit breaker box, and connected my three lines into breakers 1, 5, and 9 - i.e.:
1 - 2
3 - 4
5 - 6
7 - 8
9 - 10
11 - 12
Same side, but every other row, so that they are same phase.
The hardest part (for this old man), was crawling 40 feet in a very tight crawl space, and digging two trenches in lava rock, for the two 8' dedicated ground rods. The only real pain with using 10 ga wire is when terminating the ends (stiff wire), and getting them to cooperate sharing space in the small electrical baxes - Ha!
I terminated each dedicated line with Porter Ports - very worthwhile.
As for the sub-panel, I used a 12 circuit breaker box, and connected my three lines into breakers 1, 5, and 9 - i.e.:
1 - 2
3 - 4
5 - 6
7 - 8
9 - 10
11 - 12
Same side, but every other row, so that they are same phase.