Don't forget with a 100 amp out you need to up date the wiring.
That small wire wont take 100 amp for long and your going to get a big voltage drop that will make more heat.
Unless there is something going on, like a huge audio system or a refrigerator in there, 100 amps is probably 60 amps more than you will ever need. A 100 amp wire is huge, I would use no more than a 12 or 10awg wire for that
