Zoeller 803-0002 Model N803 "Shark" Fractional HP Grinder Pump 0.5 HP 115V 1PH 15' Cord NonautomaticZoeller Model 803 Grinder Pump Description The Shark Series Model N803 Grinder Pump with a is designed to remove raw sewage in sewage ejector applications. The professional grade, 1 2 HP 803 is a time tested and reliable grinder pump. The N803 is a nonautomatic pump equipped with a single piggyback float switch. The piggyback float switch allows you to set the on and off point of the pump in the field. This is ideal in an application with a deep sump