Author Archives: Dr. Khuong Nguyen-Vinh

Comparison of #4 AWG vs #1 AWG copper wire sizes on an NEC Table 310.16 page, demonstrating the correct wire size for 100 amp breaker general load circuits versus residential service conductors.
100 Amp Breaker Wire Size & Capacity Guide (NEC 2025)

The Ultimate Guide to 100 Amp Breakers: Wire Size, Capacity, and Installation (NEC Standards) Author: [...]

14
Dec
Diode Symbols
Diode Symbols Guide: Complete List & Functions (2025)

Diode Symbols: The Complete Guide to Electronic & Electrical Schematic Symbols Category: Electrical Technology Reading [...]

14
Dec
An electrical engineer inspects High Rupturing Capacity (HRC) fuses installed in a large industrial switchgear panel to prevent catastrophic short circuit faults and electrical fires in a substation environment.
HRC Fuses Explained: High Rupturing Capacity Guide (2025)

High Rupturing Capacity (HRC) Fuses: The Ultimate Guide for Electrical Engineers & Safety Pros Author: [...]

14
Dec
Close-up of heavy-duty copper electrical wire strands symbolizing electric current flow and ampere load capacity.
Ampere (Amp) Explained: Definition, Formulas & Conversion

Ampere (Ampe) Explained: The Complete Guide to Understanding Electric Current Author: Dr. Khuong Nguyen (Vinh [...]

14
Dec
Senior electrical engineer analyzing a hand-drawn schematic diagram focusing on the polarized capacitor symbol ANSI standard versus IEC standard.
Capacitor Symbols: Complete Guide to IEC, ANSI & Polarity

Comprehensive Guide to Capacitor Symbols: IEC, ANSI, and Schematic Standards “Schematic symbols are the alphabet [...]

14
Dec
How to Wire a 20A – 125V Outlet – NEMA 5-20 Receptacle
How to Wire a 20A Outlet (NEMA 5-20): Stop! Use #12 AWG

How to Wire a 20A – 125V Outlet (NEMA 5-20): The Definitive NEC Guide Author: [...]

14
Dec
terminals of nema 6 15 receptacle wring 15a 250v outlet 2
How to Wire a NEMA 6-15 Receptacle (15A 250V): Ultimate Guide

How to Wire a 15A – 250V Outlet (NEMA 6-15): The Complete NEC Guide Author: [...]

14
Dec
Terminals of NEMA 6-20 Receptacle - Wring 20A-250V Outlet
How to Wire a 20A 250V Outlet (NEMA 6-20): No Neutral Needed!

How to Wire a 20A – 250V Outlet (NEMA 6-20): The Ultimate Safety & Wiring [...]

14
Dec
Terminals of NEMA 5-30, 30A-125V Receptacle
How to Wire NEMA 5-30 Receptacle (30A 125V): Not for RVs!

How to Wire a NEMA 5-30 Receptacle (30A – 125V): The Complete Guide Author: Dr. [...]

14
Dec
Terminals of NEMA 5-50, 50A-125V Receptacle
How to Wire a NEMA 5-50 Receptacle (125V/50A): Ultimate Guide

How to Wire a NEMA 5-50 Receptacle (50A – 125V): The Definitive Technical & Safety [...]

14
Dec
3D visual representation of the Electrical Power Triangle on a workbench, illustrating the trigonometric relationship between Active Power (P), Reactive Power (Q), and Apparent Power (S) with phase angle theta.
Active vs Reactive Power Explained: Formulas & The “Beer Analogy”

Active, Reactive, Apparent, and Complex Power: A Comprehensive Guide Part 1: The Three Pillars of [...]

12
Dec
Professional electrician terminating #6 AWG copper wire into a double-pole 50 Amp circuit breaker within a residential electrical panel.
What Wire Size for 50A Breaker? NEC Guide (#6 Cu vs #4 Al)

What is the Suitable Wire Size for 50A Breaker and Outlet? (NEC Guide) Part 1: [...]

12
Dec
dc-machine-construction-working-types-and-applications
DC Machine: Construction, Working, Types & Applications [2025]

Comprehensive Guide to DC Machines: Construction, Working, Types & Applications Part 1: Introduction & Working [...]

12
Dec
Assortment of common capacitor types including aluminum electrolytic, ceramic, tantalum, and mica capacitors on a vintage engineering workbench.
Capacitor & Types of Capacitors: The Ultimate Guide [2025]

Capacitor & Types Of Capacitors: The Ultimate Guide Fixed, Variable, Polar & Non-Polar | 2025 [...]

12
Dec
How to Test a Capacitor with a Multimeter (3 Safe Ways)
How to Test a Capacitor with a Multimeter (3 Safe Ways)

3 Ways to Test a Capacitor: Accurate & Safe Methods (2025 Guide) Quick Summary: To [...]

12
Dec
Electronics Engineering Interview Questions
Top 65+ Basic Electronics Engineering Interview Questions [2025]

65+ Basic Electronics Engineering Interview Questions & Answers The Ultimate Guide for 2025 | Circuit [...]

12
Dec
Top 60+ Electrical Engineering Interview Questions & Answers [2025 Edition]
Top 60+ Electrical Engineering Interview Questions & Answers [2025 Edition]

60+ Electrical Engineering Interview Questions & Answers Comprehensive Guide for 2025 | Part 1: Basics, [...]

11
Dec
Top 7 Essential Books for Electricians & Apprentices (NEC 2023/2025 Guide)
Top 7 Essential Books for Electricians & Apprentices (NEC 2023/2025 Guide)

⚡️ TOP 7 ESSENTIAL BOOKS & GUIDES FOR ELECTRICIANS AND APPRENTICES (2025 EDITION) Disclaimer: Expertise [...]

11
Dec
Close-up of the NEMA TT-30R 30A 125V receptacle face, featuring the distinct 3-prong configuration designed for RVs and Travel Trailers to distinguish it from 240V outlets.
Wiring NEMA TT-30 RV Outlet: The Ultimate 30A 120V Guide [2025]

Electrical Technology | 16-20 phút How to Wire NEMA TT-30 Receptacle for RVs & Travel [...]

10
Dec