This Preventing Electrocutions by Undetected Feedback Electrical Energy Present in Power Lines. Publication No. 88-104, 1987, December. Cautions workers and employers that undetected feedback electrical energy in power lines is a constant hazard. Fuzzing, although an accepted practice to check for high voltage in power lines, is not a reliable test method. Once fuzzing has determined that high voltage is not present, low voltage testing equipment, such as a glowing neon light or a light-emitting diode, should be used to determine whether low voltage is present. -732 Steam-electric generating units burn fossil fuels, such as coal, natural gas, and petroleum. The steam turns a turbine that produces electricity through an electrical generator. Natural gas and petroleum are also burned in gas turbine generators where the hot gases produced from combustion are used to turn the turbine, which, and in turn, spins the generator to produce electricity. Additionally, petroleum is burned in generating units with internal-combustion engines. The combustion occurs inside cylinders of the engine, which is connected to the shaft of the generator. The mechanical energy provided from the engine drives the generator to produce energy. "magnetic motors for cars " and "perm motor pmg 132 permanent magnet dc " (include "permanent magnet motor diagram", "electricity generation from water ", "how do stars generate their energy ", "home energy audit nova scotia ", "how to make a model windmill ", "Magnetic motor how to build ", Renewable (also known as alternative or green) energy sources include Hydro power, Wind power, Solar, Biomasses, Biofuels and Ground Source (geothermal) & How does a permanent magnet motor work )