125w. It might handle two small-med locos and a few small/light weight cars.
If you mean the LW, that only has one throttle. Two LW would be great.
I think the SW or TW is two throttle. That case style tends to not follow lionels normal tap outlines. I had one or both as a kid and wasn't too impressed.
KW or VW 180w are better. (VW price tends to be higher because it is a ZW twin, but deals are common too because it is odd and lower power than ZWs)
These can deliver more than the 180w half of 90w to track #A
If track B is only wanting 50w, track A has 130w to use or visa versa. Nice.
Two 1033s 90w is decent too, (gotta phase two, not hard. I did it with gramps by phone a few times when very young. Not hard to find how, here, Lionel via Youtube, etc,)
A prewar transformer? A different look but still great stuff
