Specifications include, but are not limited to: 3.1 Cable shall be guaranteed to withstand copper temperatures not to exceed the following: 3.1.1 90°C (194°F) for normal operating conditions; 3.1.2 130°C (266°F) not to exceed 1500 cumulative hours during the life of the cable 3.1.3 250°C (482°F) under short circuit conditions 3.2 The 35 kV cable will be installed on a three phase (3∅) 34,500 Volt wye system with the neutral grounded through a resistor. Three single phase cables (3∅ system) will be installed in a single duct. The maximum ground fault current is 7000 Amperes (A) for a phase-to-ground fault and 15,000 A for a phase-to-phase fault for a maximum of ten cycles. The line to ground voltage on the unfaulted phases may reach line to line values underground fault conditions. All three phase cable shall have a one-third or reduced concentric neutral. All single phase cable shall have a full concentric neutral.