Be sure to check with code. The panel in the garage was considered a sub-panel. I had to run three #4s and a ground. Plus a ground rod at the garage. And a disconnect before the panel in the garage. And an isolated ground in the sub panel, which meant that the neutral and ground could not be tied together anywhere. Also, consider running two cat 5 cables instead of one phone line. Cat 5 cable is only $70.00 per thousand feet. Phone line can be run on it, as well as computer. Don't you want to put a computer in your building so that you can check Tractorbynet when those tough questions arise? /w3tcompact/icons/smile.gif
Nice and neat trench, Fred. Frost line is 4ft deep here in lower Michigan. And, I needed to get into the trench at each end for making connections, etc. I thought about renting or hiring a trencher to do the job (they have machines that go to 4ft deep and about 8 inches wide) but would have needed to do the same with a back hoe for the ends. So, I decided to just have the backhoe guy do it all. I think it worked out ok...the part of the lawn that got ripped a new one is due for renovation anyway.
Here's a jpg diagram of my home electrical layout. Its about 150k, so be fore warned, its big. It shows how the main disconnect is outside of the house under the meter. Since it is the main disconnect, the main panel in the house is considered a sub panel. I feed my big garage from the panel in the house with a 50AMP double pole breaker. There is also a disconnect switch in the big garage ahead of the sub panel. I have several circuits in the big garage. I also feed a smaller garage from the sub panel in the big garage. Since it is only one circuit, I did not need a sub panel in the little garage. If its not a clear picture, I can post a larger one on another site and give you the link. Also, this might not be the code in your area, and I take no responsibility if you electricute yourself/w3tcompact/icons/smile.gif.