Star vs Delta Connection Diagram

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🌟 Star Connection vs 🔺 Delta Connection Star Connection (Y): Each phase winding is connected to a common neutral point. Phase voltage = Line voltage ÷ √3. Used...
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Grounding and Bonding: Safety Essentials

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Grounding and Bonding: How Are They Different? Grounding and bonding are often confused, but they’re not the same. Both work together to keep electrical systems...
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Safe Working at Heights in the Electricity Supply Industry

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Working at heights on electricity network poles and structures involves serious risks such as falls and electrical hazards. Proper training, equipment, and safe practices...
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Fire Safety in Electrical Installations

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🔥 What is an Electrical Fire? An electrical fire starts from damaged or overheated electrical components, wiring, or appliances. These fires spread quickly and can...
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Photodiode

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A photodiode is a semiconductor device that converts light into an electrical current. It operates in reverse bias and generates current when exposed to...
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LED (Light Emitting Diode)

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A Light Emitting Diode (LED) is a semiconductor device that emits light when current flows through it in the forward direction. Unlike ordinary diodes,...
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Zener Diode

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A Zener diode is a special type of diode designed to allow current to flow not only in the forward direction (like a normal...
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Forward and Reverse Bias

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Definition: A PN junction diode works in two modes depending on how the external voltage is applied: Forward Bias: Current flows easily. Reverse Bias: Current is almost...
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PN Junction Diode

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Definition: A PN junction diode is formed when a p-type semiconductor (rich in holes) is joined with an n-type semiconductor (rich in electrons). The junction...
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Intrinsic & Extrinsic Semiconductors

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Intrinsic Semiconductor Definition: An intrinsic semiconductor is a pure form of semiconductor material (like silicon or germanium) with no impurities. Its electrical conductivity comes only from...
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Electrical Symbols on Floor Plans & Blueprints

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Electrical plans, wiring diagrams, and installation layouts all rely on standardized symbols. Consistency ensures that electricians, inspectors, and contractors all “speak the same language.” Standardized symbols...
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Symbols for Lighting Fixtures in Wiring Diagrams

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Light fixture symbols help differentiate between types of lighting. Ceiling lights, for example, are often drawn as circles representing the light fixture itself. Solid...
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Switch Symbols and Their Uses

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Generic Switch Symbol It is the symbol of a generic switch in open condition. Closed switch It is a generic symbol for closed switch. a closed switch...
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Must-Know Electrical Symbols for Electricians

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Location Symbols for Installations Machine, general symbol* function etcLoad, general symbol* detailsMotor starter, general symbol* Indicates type etc.Socket-outlet, general symbol Twin Socket-outlet, general symbolSwitched socket-outlet Twin Switched...
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Introduction to Common Electrical Symbols

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Electrical symbols are universal representations used in diagrams and schematics to show electrical components and connections clearly. Power Supply Schematic Symbols SchematicSymbolSymbol IdentificationDescription of SymbolSingle CellA...
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