60A in the garage would be more than enough in my opinion. We ran a
detached for 30+ years with a 10-3 underground 200 feet away. 200A welder,
air compressor, overhead heater, fluorescent lights, bench grinder, etc.
Never once did we trip the 30 in the main house, nor did we experience the
lights in the garage dimming. Your mileage may vary.
"Doug Miller" < firstname.lastname@example.org> wrote in message
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