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Displaying products 1 - 10 of 48.
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Discusses how speed of an AC Motor is determined, theoretical speed vs. actual speed, AC power converters and inverters. Also, six-step sine wave and PWM simulated AC power, ramping, motor running characteristics when control is used and factors in selecting a controller.
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A starting examination of electric power and its uses in industry. Includes measurement (amps, volts and watts), DC, AC, phases, magnetism and electric motors.
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Includes discussion on the function of the controller and how it works, enclosures, internal and external monitoring, speed regulation, motor construction, base speeds, voltages and performance factors to consider when selecting the drive.
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Selecting the proper size and type for voltage, current load or resistance testing. Advantages and disadvantages of analog and digital styles. Safety checks, examinations and precautions. Demonstration of proper and safe usage.
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Discusses the basic nomenclature of conductors, such as size designations and numbering systems. Copper versus Aluminum; the advantages and disadvantages of each. Stranded and solid conductors and their application. Non-insulated (bare) and insulated conductors and the various insulation types with their designations and appropriate temperature limitations. References to the National Electrical Code, UL li
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Discusses industry related products. Conductor or 'wire' is broken down into five basic easily understood categories. Addresses low, medium and high voltage applications. Includes industrial, commercial, residential and special duty product applications. Also reviews the commonly available electronic wire types, industrial cables and portable cords, including their nomenclature.
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A simple understanding of electric light sources with primary emphasis on incandescent and fluorescent lamps including the selection of fluorescent lamp ballast. Lamps such as halogen and other energy saving products are reviewed. The various types of lamps, their identification systems, common applications and comparative efficiencies are all discussed.
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Reviews three major commercial light sources; Mercury Vapor, Metal Halide and Sodium High Intensity Discharge Lamps, includes ballasts, starting aids and some typical applications. Lighting characteristics and how they are measured, plus other general operating characteristics are examined.
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A discussion on metal and non-metallic enclosures, outlet boxes and junction boxes. Selection criteria such as cubic capacity and type of installation are examined. Common components are identified by their trade names. Includes general types used for indoor-outdoor and special service. Reviews NWMA and UL designations.
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Provides a simple and workable understanding of applications and duty cycles. Ratings on devices for home use, commercial service and hospital duty components are discussed. A wide variety of components are reviewed, including components such as connectors, plugs, receptacles, switches and dimmers.
