Grundfos 3 Wire Stainless Submersible Pumps
3 wire pumps are pumps that require a control box to start up.
3 wire pumps includes a lead wire with 2 power wires, 1 start wire and 1 ground wire that attach to the color coded motor terminals inside the control box.
NOTE: Supply power/voltage should never be applied to any of these wires or damage to the motor could occur.
Grundfos Stainless Steel 3 Wire Pumps Ship "FREE"