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Electrical shock happens when current passes through the body. Electricity travels through closed circuits, and people, sometimes tragically, can become part of the circuit. When a person receives a shock, electricity flows between parts of the body or through the body to a ground. This can happen if someone touches both wires of an energized circuit, touches one wire of the circuit while standing unprotected or touches a metal part that has become energized.An earthing system (UK and IEC) or grounding system (US) connects specific parts of an electric power system with the ground, typically the Earth's conductive surface, for safety and functional purposes.[1] The choice of earthing...
Power quality issues can increase your utility and operating costs. In a 3-phase power system, any disturbance on one parameter (magnitude, frequency, waveform, or symmetry) is classified as a power quality problem. Even minor disruptive voltage fluctuations can cause major issues from equipment malfunctions, to flickering lights, to complete power shutdowns. Power quality problems can cause unplanned, expensive outages and equipment failures. Main topics: Power QualityStandards and their effect on energy qualityVoltage and frequency modulators and the resulting harmonicsThe effect of harmonics in low voltage networksPower Factor c...