The Aluminum 600V URD is designed to serve in the secondary distribution circuits for power. In these secondary circuits, the electrical cable is installed in ducts or direct burial applications. Due to its versatility, conductor strength, and insulation integrity, it works well for these outdoor applications. It is also used in wet and dry places since the cable has a maximum operating temperature of 90��C. The electrical cable is also designed to provide an option of pre-pulling into ducts. Size AWG:nbsp;2 Stranding: 7 Insulation Thickness (mils): 60 Neutral Size AWG: 4 Single Phase Conductor Inches: 0.403 O.D. Inches:nbsp; 0.973 Weight lbs./1000ft: 367 lbs Ampacity:nbsp;Direct burial:nbsp;155 Amps Ampacity:nbsp;In duct:nbsp;115 Amps