Big John Submersible Sump Pumps - 10 Series 1/2 HP, 83 GPM - Automatic Submersible Sump Pump, 25' power cord The Big John submersible sump pumps provide efficient, trouble-free service for extended or continuous use in moving large volumes of water. Little Giant's submersible sump pumps are ideals for use in Excavation, Crawl Space, Basement, Underground Passageway, Loading Docks, Grain Elevator, Construction Site, Cooling Tower, Fire Cleanup and other applications requiring high volume water dispersal. 1/2 HP split phase motor Designed for continuous duty Epoxy coated cast iron housing Carbon/ceramic shaft seal Upper and lower ball bearings Multiple switch options for automatic operation Multiple power cord lengths available UL / CSA listed Product Specifications Spec Sheet O&M Manual Item Number: 510155 Model Number: 10-CIA