Originally Posted by LANShark42
I assumed it would be fed from the existing house panel. Pros/Cons?
What is your house panel currently (100 amp, 200 amp)? I assume you are going to install a circuit breaker in your house panel and run the wire from it over to your detached garage.
It works similar to an RV. You only have so many amps . If you have a 100 amp service to your house and run a 100 amp service off of it to your detached garage....you are in essence just sharing the same 100 amp service, but now between two buildings. If you used say 50 amps worth of stuff in your detached garage...then since it's being fed by your house, then you are now limited to 50 amps in your house.
It may not ever be a big deal, but I have no idea what you use in your house, amount of air conditioners, if you have electric stoves, electric heat, etc.
What I ran into was, I actually have three buildings (a house, shop, and two story detached garage). I ran a 200 amp service to the shop, as it was built first with the house planned for future. I then built the house and ran a 100 amp service from the shop to it....leaving 100 amps for the shop and it's air conditioner, electric welders, etc.
Years later, I built a detached garage with air conditioned apartment on the top. Now I had to either feed from the houses 100 amp service or the shops 100 amp service. I chose the shops, but had the electric company come out and do an assessment. They figured out everything, and said it should be good to go, unless I was welding and both air conditioner compressors kicked on at the same time.
Just food for thought, and you may not ever have the electrical requirements I have. Also, all of mine was run underground as I wanted no overhead lines for tree limbs to fall on.