Power System
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Why are Capacitors Connected in Series in Power Lines?
Why are Capacitors Connected in Series with Power Transmission Lines? While capacitors are often associated with shunt applications for power factor correction, series capacitors are widely used in transmission lines…
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Why is a Capacitor Bank Connected in Parallel and Not in Series for P.F?
Why is a Capacitor Bank Connected in Parallel and Not in Series for Power Factor Correction? Capacitor banks are used to improve power factor and voltage regulation in electrical systems.…
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Why Does Japan Use Both 50Hz and 60Hz in Its Power System?
Why and How Does Japan Use Both 50Hz and 60Hz Frequency in its Electrical Power Systems? Japan uses both 50Hz and 60Hz power frequencies due to historical and logistical reasons…
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Why is the Neutral Wire Size Smaller than the Phase Wire?
Why is the Size of the Neutral Conductor Smaller than the Line Conductor in a Polyphase System? In a three-phase (poly-phase) system, the Neutral wire may sometimes be smaller than…
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Why is the Ground Wire Size Smaller than the Hot Wire?
Why is the Size of the Ground Conductor Smaller than the Line Conductor? The ground wire does not always have to be the same size as the power (phase or…
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Why Must Neutral and Ground Wires Be Bonded in the Main Panel?
Why Do Neutral and Ground Conductors Need to Be Bonded in the Main Panel? According to NEC Article 250, both the neutral and ground wires must be connected only in…
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Why are Neutral and Ground Wires Separated in a Subpanel?
Why Do Neutral and Ground Conductors Need to Be Separated in a Subpanel? According to NEC Article 250, neutral and ground wires must remain separate in subpanels. Bonding (connecting) the…
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Why are Electrical Busbars Rectangular Instead of Circular?
Why is the Preferred Shape of Busbars Rectangular or Flat Rather than Circular or Round Shaped Cables? What is an Electrical Busbar? An electrical busbar is a metallic strip or…
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IEC and BS 7671 Requirements for Consumer Unit and Distribution Board
IEC-60364 and BS-7671 Guidelines for Garage Unit, Consumer Unit and Distribution Board The IEC (International Electrotechnical Commission) and BS 7671 (British Standard for Electrical Installations) both provide essential requirements for…
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National Electrical Code (NEC) Requirements for Panelboards
NEC Requirements for Electric Main Panelboards and Working Space Depth and Mounting Height Panelboards shall be installed in accordance with the listing of the panelboard. The National Electrical Code (NEC)…
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