Electrical Questions? Ask an Electrician Online.
Welcome. My name is ***** ***** would be glad to assist
You can install a sub panel in the garage from the main panel by adding a breaker in the main panel and wiring to the garage.
If you can provide the estimated loads, I can determine what size breaker and wire is needed for the sub panel..
You stated the garage is attached to the house, correct? Grounding is easier on attached than separated
Let me know and we can continue,