This is for my Industrial Wiring Principles class

1.  Three, 10AWG, type THW conductors are to be installed between poles on individual insulators.  What will the conductor ampacity be? 

2.  A 3-phase, 480 V motor with a starting current of 235 A is located 1800 ft (550 m) from the electrical power source. What size copper conductors should be used to ensure that the voltage drop will not exceed6% during starting.