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=== Circuit Tracer / Fox and Hound ===examples: * Fluke 337 1000 Amp True RMS AC/DC Clamp Meter* Amprobe ACD-10 TRMS-PLUS 600A Clamp-On Multimeter by Fluke === Circuit Tracer ===Sometimes referred to as a Fox and Hound. Purchase a quality unit that does electrical, network, and phone.Perhaps the most common piece of equipment used in low voltage DC applications as well as higher voltage AC systems. They are used by electricians, automotive mechanics, electronics technicians, and by many other industries. There are two basic types of multimeters, digital and analog. Analog multimeters have a needle while digital multimeters have an LCD or a LED display. The most basic test functions are for voltage, current and resistance. Even the least expensive units have many more testing functions than those basic three. In a Digital Multimeter the signal under test is converted to a voltage and an amplifier with an electronically controlled gain preconditions the signal.=== Electrical Power Analyzer ===A three-phase electrical power analyzer is an expensive piece of equipment that is used to measure, calculate, and display the main electrical parameters for balanced and unbalanced, three-phase electrical systems. There are different types of power analyzers:* Power Quality Logger* Power Quality Analyzer* Electrical Power AnalyzerSome power quality analyzers are designed to measure single phase systems while others are for three phase systems. A single phase system is one that consists of one alternating current, like in most homes. A three phase system is one that consists of three alternating currents, sometimes used in industry, especially with electric motors. A three-phase system has three different sine wave current flows, different in phase by 120 degrees from each other. For residential purposes, a single phase system, like in a home, has three wires, live, neutral, and the earth ground.Power Quality: Based on measuring and calculating indicators of power demand, power consumption and power cleanliness. Clean power is free of harmonics which result from non-linear loads that cause irregular spikes and dips in voltage and current on an electrical system. Power provided by the utility company should be constant, a perfect sin wave. The current being drawn from the utility company depends on the load in the building. Harmonics appear when varying, non-linear loads create short pulses of current that deform the supplied, sinusoidal current waveform, creating an arbitrary waveform. The sin wave becomes distorted and voltage becomes irregular, a condition that can be identified and measured with a power quality analyzer.=== Watt Meter ===Displays the wattage being used, as well as the cost, in dollars and cents.== True RMS Meter ==== The True RMS Meter Explained ==* Professional Equipment - http://www.professionalequipment.com/