Looks like a sub panel maybe a mobile home or modular home with a disconnect outside. Also not that old of a place either by the color of the wire sheathing. I have a sump pump in my basement also. Mine is a 40 year old house with a 100amp service we just replaced the small 20 circuit panel with a bigger 30 circuit one cause my dad had it kicking around.
no, 100A main panel, 74 year old house. That was put in before I bought the place, I'd have gone bigger I like my circuits underutilized... When I moved in it was 15A for the boiler, 15A for the lights (and two kitchen outlets) 15A for the 1st floor outlets and basement lights, 30A for the dryer... that's all. Had to hope the 40 year old fridge didn't kick on when the washing machine was running and the TV was on... funny our electric bills were a lot lower back than ;D Best part was when I discovered a short in one of the old BX lines... explained why who ever installed the box left the casing a few inches away from the panel... I got a fun suprise when I went to fix that. >
All better now, as you pointed out, 99% new wiring (everything except about 8' that goes out to the front porch light)
any how, panel is almost full, two spots left.
someday I'd like to do the generator thing, keep the furnace and fridge running if the power goes... been lucky so far. (and yes, I'd get a transfer switch)
speaking of exterior disconnects, I really like those boxes that have the meter, disconnect AND all the breakers outside... seen some right on the front of places, don't piss off the neaghbors, they'll sneak over at night and shut off your power... heh. A place I rented was the same way, but in the back of the house, royal PITA if you pop a breaker when it's pouring rain out, (True story, I poked at it with a long stick...)