solve using the wire chart

Interpreting an Electrical Wire Chart Locate the column on the left side of the chart representing the voltage system. Move down in this column until you find the horizontal line representing your desired wire length. Follow this line to the right until it intersects the diagonal line for your desired amperage. At this point you must be at or above curve (1, 2 or 3) for your application. A. If you are at or above your curve (1, 2 or 3) drop down vertically to the bottom of the chart to the wire size. If the line falls between wire sizes, you must select the larger wire. B. If you are not at or above your curve (1, 2 or 3) you must follow along upwards on your desired amperage line until it is at or above curve (1, 2 or 3). Now drop down vertically to the bottom of the chart to the wire size. If the line falls between wire sizes, you must select the larger wire. SITUATIONS FOR ELECTRICAL WIRE CHART 1. 28 Volt System, 100 Feet of Wire, 40 Amps, Free wire in air (continuous). A. 1 Gauge B. 2 Gauge C. 4 Gauge 2. 14 Volt System, 35 Feet of Wire, 15 Amps, Free wire in air (continuous). A. 10 Gauge B. 6 Gauge C. 8 Gauge 3. 14 Volt System, 20 Feet of Wire, 40 Amps, Bundle (continuous). A. 10 Gauge B. 6 Gauge C. 8 Gauge 4. 28 Volt System, 50 Feet of Wire, 30 Amps, Bundle (intermittent). A. 6 Gauge B. 8 Gauge C. 10 Gauge 5. 14 Volt System, 20 Feet of Wire, 6 Gauge, Bundle (continuous). A. 45 - 50 Amps B. 55 - 60 Amps C. 60 - 65 Amps SCORING: FOR EACH ACCURATELY INTERPRETED SITUATION, +5. Subtotal score: Instructor: Grade: cbf3d01ec5c4d65d6359f6268e104caf14343da5.doc 05/29/2019 Page 3 of 7 Interpreting a Density Variation of Aircraft Fuel Graph Locate the horizontal graph scale representing temperature in Celsius. After determining the local ambient temperature, locate the temperature represented on the bottom graph edge and follow a vertical line until you intersect the fuel type along the determined temperature line. Move along this line to the left of the fuel type intersecting line and the temperature line until you locate the specific weight in pounds per US gallon. A. Once you have located the intersecting left column specific weight, you have determined the specific density variation based on fuel type and temperature. SITUATIONS FOR DENSITY VARIATION OF AIRCRAFT FUEL GRAPH 1. 20'C, Aviation Gasoline Grade 100, Ibs specific weight. A. 6.55 lbs B. 5.75 Ibs C. 5.80 lbs 2. -12'C, Jet B (JP-4) Ibs specific weight. A. 6.50 lbs B. 6.60 lbs C. 6.70 lbs