PART 1 WIRING PRINCIPLES (1-284) : 1 NEC, Product Standards, and Inspection 1 2 Numbers, Measurements, and Electricity 14 3 AC and DC; Power Factor; Transformers 38 4 Basic Electrical Power Utilization Systems 55 5 Basic Devices and Equipment 67 6 Overcurrent Devices 87 7 Selecting Conductors 101 8 Making Wire Connections and Splices 116 9 Grounding for Safet…