THESE GENERAL PURPOSE 110 TO 120V SEWAGE EJECTOR PUMPS REMOVE SEWAGE CONTAINING SOLIDS FROM DRAINS WHERE A GRAVITY SYSTEM WONT WORK SUCH AS IN SEPTIC SYSTEMS THAT ARE BELOW THE MAIN SEWER LINE THEY ARE COMPATIBLE WITH MOST STANDARD US RESIDENTIAL ELECTRICAL WALL OUTLETS AND HAVE A TYPE A TWO PRONGS UNGROUNDED OR TYPE B THREE PRONGS GROUNDED POWER CORD PLUGSEWAGE EJECTOR PUMPS REMOVE SEWAGE CONTAINING SOLIDS FROM DRAINS WHERE A GRAVITY SYSTEM WONT WORK SUCH AS IN SEPTIC SYSTEMS THAT ARE BELOW THE