Want plasma cutter, but no power hookup

Garage is out back behind house, would say 50ft would be a safe bet.
house is old, built in the 50s, and the previous owner did alot of "stuff" to it...not necessarily on the up and up.
Breakerbox is actually in the kitchen pantry, however a shelving system if you will was built around it, making it damn near impossible to even trip a breaker.
Dryer is almost directly under breakerbox, in the basement. I'll be having to run the exstension cord out of a basement window out to the garage.