Single Bolt Grounding Clamp Grounding Wire Size 4 to 14 AWG Material Bronze Description/Special Features Single Bolt Grounding Clamp For Maximum Ground Conductor Wire Size 4 AWG For Minimum Ground Conductor Wire Size 14 AWG For Use With EMT and Rigid Conduit Raceways Grounding Wires Connected To 1/2 in to 1 in Conduit Steel and Copper Water Pipes Standards A-A-50552 C22.2 No 41-07 NEMA Standard FB-1 UL File Number E-20412 UL-467 UNSPSC 39121613