Cable Tray Grounding Connector Grounding Wire Size 2 to 2/0 AWG SOL 2 to 2/0 AWG STR Material Copper Number of Wires - Grounding 2 Description/Special Features Direct Burial Ribbed Neck Bolt For Maximum Ground Conductor Wire Size 2/0 AWG STR For Minimum Ground Conductor Wire Size 4 AWG SOL For Use With Aluminum Conductor Cable Tray Copper Conductors Flat Bar Grounding Wires Connected To Cable Tray Standards UL Listed Direct Burial UL467 Type - Grounding Connector Mechanical