6. Refer to the diagram below. Five (5) metal halide fixtures are located along an entrance to a parking lot. The fixtures are mounted on four (4) 30 foot poles with one fixture per pole except the last pole which has 2 fixtures. The fixtures along with their ballasts consume 375 watts each. The fixtures are connected to a single 120 volt, 20 ampere circuit with #12 stranded copper conductors. The panel is 5 feet above grade and the conduit is buried 24 inches below grade. There will be junction boxes at the bottom of each light pole in which conductors can be jointed. What is the voltage drop at the fixtures on each pole (10 Points)? (Hint: draw the circuit and calculate each segment of the conductor, for example the 300-foot segment of conductor is going to have a higher load then the conductor going up to L1). Panel 300 feet X Li 100 feet-X L2 100 feet-X L3 120 feet-> L4 & L5 - ----- ----- 375 W 375 W 375 W Panel 375 ] 375W 5 Panel peng 750 W 5 . 750w 3759 c2&30' C4330 C6330 30 C5 2 C7 2 300 100' 100' 120 Length K Los cw) Segment Length K' Load (W) Current (A) Current (a) Resistance (2) Voltage Drop (V) Resistance (m) - Volage Drop (v) ci C2 C3 C4 C5 C7