How To
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How to Wire a 20A – 125V Outlet – NEMA 5-20 Receptacle
How to Install a Standard 20A – 125V Receptacle (NEMA 5-20) with Breaker and GFCI Protection A 20A – 120V outlet receptacle (commonly known as a NEMA 5-20R) is a…
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How to Wire a 15A – 125V Outlet – NEMA 5-15 Receptacle
How to Install a Standard 15A – 125V Receptacle (NEMA 5-15) with Breaker and GFCI Protection A standard 15A, 120V receptacle outlet is a common electrical fixture used in North…
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How to Size a Breaker and Wires in AWG with EGC for Load?
Proper Sizing of Breakers and Wires in AWG with Equipment Grounding Conductor (EGC) for Branch Circuits – Based on Load Current, Wattage, and Supply Voltage in Single-Phase and Three-Phase Systems…
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LED Light Bulb Circuit – 230V / 120V Mains Operated LEDs
120V / 230V AC Mains Operated LED Light Bulb Circuit Diagram – Components, and Operation Years ago, lighting applications relied on incandescent filament lamps, compact fluorescent lamps (CFLs), and fluorescent…
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Part 14 – How to Size Star-Delta Starter for Motors?
Sizing a Star-Delta Starter with Contactors for a 3-Phase Motor A Star-Delta starter is used to reduce the inrush current when starting large three phase motors. The starting current of…
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Part 13 – How to Size DOL Starter for Three-Phase Motors?
Sizing Direct-On-Line Starter with Contactor, Fuse, Circuit Breaker and Overload Relay for 3-Phase Motors – NEC & IEC DOL Starter A DOL starter (also known as Direct-On-Line or across the…
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Part 12 – Sizing Motor Starter & Contactor – NEMA – NEC
How to Size a Motor Starter, Contactor and Controller? NEMA – NEC Motor starters and controllers are a combination of devices in a single unit to safely start, run and…
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Part 11 – Sizing Disconnecting Means for Motor & Controller
How to Size Disconnecting Switch, Fuse & Breaker for Motors and Controllers Disconnecting Means for Motors & Controllers Although we know that the motor disconnecting means can be sized based…
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Part 10 – Overcurrent Protection for Motor Control Circuits
How to Size Short Circuit and Overload Protective Devices for Motor Control Circuit Conductors? According to 430.75(A), motor control circuit must have a disconnect. If the motor control circuit conductors…
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Part 9 – Sizing Motor Overload Protection and OCPDs
How to Size Overload Protection for 3-Phase Motors? NEC Article 430, Part III provides guidelines for sizing overload protection devices such as, overload relays, fuses and circuit breakers for motor…
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