I just was GIVEN a cal spa model 200-18. It was not wired up when I I picked it up. They do not recall how it was wired. on TB1 both red wires on TB1-4. (see pic) One of the red wires then goes to a fuse but there is no lead off the other side of the fuse. (20A). the J23 jumper is only on 1 pin (The jumper does not connect the 20/50amp pins) By what I read it is wired for 120V. Anyone know for sure.