After living in a house for a year, I noticed my backup sump pump discharge pipe is 1 1/2", but then changes to 2" before it goes outside. It changes to 2" about 2/3 up the vertical section. The pump runs OK when tested but I'm worried in case of a real emergency that it'll burn out quick.
Am I being paranoid? Has anyone seen a battery backup pump with a 2" discharge?