I have an unattached garage that I'm am planning to wire and I'd like some
advice...

Run from the house to the garage is about 80 feet. I'm looking at installing
a 60 amp or 100 amp service to the garage.

In the garage is an 8 breaker (16 half breaker) panel. I plan on using 15
amp breakers and 14gauge wiring for lighting and some outlets, 20 amp
breakers with 12gauge wiring for several outlets, and installing one or two
220v outlets.

So, here are my questions...

- In my home, do I use a pair of 30 amp or 60 amp breakers?
- I know that I need two hots, a neutral and a ground to the garage. Would
this be considered two 30 amp circuits?
- What gauge wiring should I run, considering the distance from the panel to
the garage?
- Is a 220v outlet as simple as wiring two hots (each on it's own breaker,
on opposite phases) and a ground, and no neutral?
- Although I'll have a small shop in my garage, are 20 amp outlets overkill?