Electrical Wiring

Electrical Wiring Installation Tutorials

Part 3 – Understanding NEMA Motor Nameplate Data and Marking

How to Read NEMA Motor Nameplates Data Printed on It for Motor Circuits? What is NEMA? NEMA (National Electrical Manufacturers Association) is a U.S.-based trade association that develops and publishes…
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Part 2 – NEC Requirements for Motor Circuits

General Requirements for the Design, Installation, and Protection of Motors, Motor Circuits, Controllers, and Disconnects – 2023 NEC Article 430 As discussed in part 1, motor circuits differ significantly from…
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Part 1 – Motor Load Circuits: NEC Terms and Terminologies

NEC Terms and Basic Terminologies Used in Motor Load Circuits Before designing an effective motor circuit that operates as expected based on analysis and calculations, it is important to understand…
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What is the Difference Between 15-Amp and 20-Amp Outlet?

Difference Between 15-Amp and 20-Amp Outlets and Receptacles Electrical wiring installations, equipment, devices, and other electrical systems for residential and commercial applications in the United States differ significantly in complexity…
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How to Size a Branch Circuit Conductors with Protection?

Sizing of Branch Circuits and Conductors with Protection Supplying from OPCD to the Final Load Point Branch Circuit According to NEC 100 – Definitions, branch circuits are the circuit conductors…
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How to Size Feeder Conductors with Overcurrent Protection

Sizing of Feeder Conductors with Protection Supplying from Main Panel to the Subpanel or Branch Circuits Feeder Conductors According to NEC 100 – Definitions, feeders are all circuit conductors between…
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How to Size Service-Entrance Conductors and Feeder Cables?

Sizing of Service-Entrance Conductors, Feeders and Service Disconnecting Means Service-entrance conductors for the service disconnect and main panel, as well as feeder cables for subpanels, must be properly sized in…
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How to Size Equipment Grounding Conductor (EGC)?

What is Equipment Grounding Conductor? Sizing EGC for Grounding Systems The Equipment Grounding Conductor (EGC) is a main part of the electrical bonding and grounding system, ensuring the safe dissipation of…
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How to Size Grounding Electrode Conductor (GEC)?

What is Grounding Electrode Conductor? Sizing GEC for Grounding in AC Systems For a proper grounding system, the following step-by-step guide can be used to determine the suitable size of…
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Grounding and Methods of Earthing in PV Solar System

Methods of Earthing and Grounding in PV Solar Panel Systems Grounding (also known as earthing) is the process of physically connecting the metallic and exposed parts of a device to…
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