NEC
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Electrical Wiring
How to Wire Single Pole, Single Throw (SPST) as 2-Way Switch?
Installation of SPST – 2-Way Switch (NEC) AKA 1-Way Switch (IEC) for 120/240V & 230V AC – 2-Way & 1-Way Circuits What is SPST Switch? SPST (stands for Single Pole…
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Electrical Wiring
Why are Outlets and Receptacles in Hospitals Upside Down?
Why Are Hospitals Outlets Upside Down as Compared to the Residential Receptacles Most of you guys may have noticed the inverted electrical outlets installed in the hospitals while the same…
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Electrical Wiring
How to Wire a Subpanel? Main Lug Installation for 120V/240V
Wiring a Subpanel for 120V & 240V with GFCI – NEC – US What is a Main Panel? According to NEC (National Electric Code: Article 1 00-Definitions), a Main Panel…
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Electrical Wiring
How to Wire 277/480V, 1-Phase & 3-Phase Main Service Panel?
Wiring a 480V/277V, Single & Three Phase Main Breaker Box for Commercial Applications What is 277 & 480V Commercial Supply? 277V is a standard single phase voltage derived from 480V…
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Electrical Wiring
How to Wire 120/208/240V High Leg Delta 1 & 3-Phase Panel
Wiring High Leg Delta Main Panel for 120V, 208V & 240V, 1-Phase & 3-Phase Circuits What is High Leg Delta? High Leg Delta (also known as Power Leg, Wild Leg…
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Electrical Wiring
How to Wire 120/208V 3ΦY Main Panel for 1-Phase & 3-Phase Load
Wiring a 3-Phase Wye 208/120V, Single-Phase & Three Phase Load Center for Commercial Applications In the USA, 208V single phase and three phase voltage is one of the standard voltage…
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Electrical Wiring
How to Wire 120/240V Main Panel – Breaker Box Installation
Wiring Installation of Single Phase 120V & 240V Circuits & Breakers in Main Service Panel In the USA and Canada (following NEC and CEC), distribution transformers typically receive 4.5 kV…
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Electrical Wiring
Electrical Wiring Color Codes for AC & DC – NEC & IEC
Wire and Cable Color Codes for AC Single-Phase, Three-Phase, and DC Circuits Electrical engineers, contractors, traders, manufacturers, and especially electricians worldwide rely on different wiring color codes for wire and…
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Electrical Wiring
How to Wire a GFCI Combo Switch and Outlet?
Wiring and Installation of GFCI Switch/Outlet Commination with Single Pole Switch and 15A-120V Receptacle a GFCI aka Ground-Fault Circuit Interrupter is a protective device designed to prevent electric shock. It…
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Electrical Wiring
How to Wire a GFCI Outlet – Wiring a GFCI Receptacle
How to Install a 15A/120V and 20A/120V GFCI Receptacle Outlet What is a GFCI? GFCI (Ground Fault Circuit Interrupter) is a protective device that automatically detects ground faults and leakage…
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