Group # 10 Exercise 1: Assume that the annual peak-load input to a primary feeder is 2000 kW. A computer program that calculates voltage drops and 12R losses shows that the total copper loss at the time of peak load is PR 100 kW. The total annual energy supplied to the sending end of the feeder is 5.61 x 106 kWh. = a. By using Equation 2.40, determine the annual loss factor. The annual loss factor is F-0.3 +0.75 b. Calculate the total annual copper loss energy and its value at $0.06/kWh. Example 6: The average load factor of a substation is 0.65. Determine the average loss factor of its feeders, if the substation services a. An urban area b. A rural area