Author: ELECTRICAL_WORLD

Transformer Selection & Technical Specification in EPC Projects

Transformer Selection and Technical Specification in EPC Projects Selecting a transformer in an EPC project is much more than simply deciding its kVA rating. For example, a load calculation may tell us: Required transformer...

FULL EPC ELECTRICAL LESSON

Transformer Sizing in EPC: kW to kVA, Margin & Selection

Transformer Sizing in EPC Electrical EPC Design Course — Beginner to Professional Level Transformer sizing is a very important EPC electrical engineering skill because it connects several concepts you've already learned: Load...

FULL EPC ELECTRICAL LESSON

Motor Starting Methods for EPC Electrical Engineers: DOL, Star-Delta, Soft Starter & VFD

Motor Starting Methods for EPC Electrical Engineers Electrical EPC Design Course — Beginner to Professional Level In Lesson 8, we learned the fundamentals of industrial motors, including motor rating, current, efficiency, power...

FULL EPC ELECTRICAL LESSON

Motor Fundamentals for EPC Electrical Engineers

Motor Fundamentals for EPC Electrical Engineers Electrical EPC Design Course — Beginner to Professional Level If you are learning Electrical EPC Design, motors are one of the most important topics you need to understand. In a...

FULL EPC ELECTRICAL LESSON

Electrical Equipment — Transformer, Switchgear, PCC & MCC

Electrical Equipment — Transformer, Switchgear, PCC & MCC Electrical EPC Design Course — Beginner to Professional Level In Lesson 6, we learned how to read a Single Line Diagram (SLD) and trace the flow of electrical...

FULL EPC ELECTRICAL LESSON

Understanding the Single Line Diagram (SLD)

Understanding the Single Line Diagram (SLD) 1. What is Single Line Diagram (SLD)?Important2. Why Is the Single Line Diagram (SLD) So Important?3. Let's Build Our First Single Line Diagram (SLD)4. Add a Transformer5. Understanding...

FULL EPC ELECTRICAL LESSON

Electrical Power Distribution System & Voltage Levels

Electrical Power Distribution System & Voltage Levels Electrical EPC Design Course — Beginner to Professional Level In the previous lesson, we learned about the Electrical Load List—the master list of electrical loads in...

FULL EPC ELECTRICAL LESSON

Electrical Load List — The Starting Point of EPC Electrical Design

Electrical Load List — The Starting Point of EPC Electrical Design Electrical EPC Design Course — Beginner to Professional Level After understanding the Electrical Design Basis (EDB), the next major step in EPC electrical...

FULL EPC ELECTRICAL LESSON

Electrical Design Basis — The Foundation of EPC Electrical Design

Electrical EPC Design Course — Beginner to Professional Level Before an EPC electrical engineer starts sizing cables, transformers, switchgear, motors, generators, UPS systems, and other electrical equipment, one important...

FULL EPC ELECTRICAL LESSON

How an EPC Electrical Engineer Actually Works: A Practical Guide for Beginners

Table of Contents[Open][Close] How an EPC Electrical Engineer Actually Works: A Practical Guide for BeginnersIntroduction1. Imagine a Real EPC Project 🏭New Process Plant — 100 MW Electrical LoadAn important point2. Where...

FULL EPC ELECTRICAL LESSON

Electrical EPC Design — Complete Learning Path

⚡ Electrical EPC Design — Complete Learning Path Table of Contents[Open][Close]⚡ Electrical EPC Design — Complete Learning PathFrom Beginner to Professional EPC Electrical Design Engineer📚 Complete Electrical EPC...

ELECTRICAL BASICS

DB Sizing for Flats (Distribution Board Sizing)

Distribution Board (DB) sizing in residential buildings depends on the connected load, supply type (single-phase or three-phase), current calculation, and number of outgoing circuits. Below is a simple explanation using 2 BHK and...

ELECTRICAL BASICS

Why Demand Load is Converted to kVA for Transformer Sizing

A transformer is rated in kVA, not in kW. Because a transformer supplies both real power and reactive power. 📌 Power Types in Electrical System TypeSymbolMeaningReal PowerkWActual power used by equipmentReactive PowerkVARPower...

ELECTRICAL BASICS

What is Demand Factor (Very Simple Explanation)

Demand Factor means: How much electrical load is actually used compared to the total connected load. 📌 Formula Demand Factor=Maximum DemandTotal Connected Load\text{Demand Factor} = \frac{\text{Maximum...

ELECTRICAL BASICS

What Is the Difference Between AC and DC?

What Is the Difference Between AC and DC? If you are starting to learn electrical engineering, one of the first concepts you will come across is AC and DC. AC means Alternating Current, while DC means Direct Current. Many people...

ELECTRICAL BASICS

What Is Potential Difference? Voltage Explained Simply

What Is Potential Difference? What Is Potential Difference? 1. What Is Potential Difference in Simple Terms?2. Understand Potential Difference Using a Water AnalogyCase 1: Different Water LevelsCase 2: Equal Water Levels3. What...

ELECTRICAL BASICS

WHAT IS BACK EMF AND WHY IT IS NEEDED?

1. How a running motor works: When the motor’s armature (rotor) spins in the magnetic field, it acts like a generator, producing a voltage called back EMF. This back EMF opposes the supply voltage. The net...

ELECTRICAL BASICS

WHAT IS AMPACITY

What Is Ampacity? Simple Explanation of Cable Current-Carrying Capacity What Is Ampacity? Ampacity means the maximum amount of electrical current that a conductor or cable can carry continuously without exceeding its allowable...

ELECTRICAL BASICS

HOW TO UNDERSTAND CABLE SIZING LIKE A STORY ?

he Adventure of Mr. Current & The Cable Kingdom Once upon a time, in the Electrical Kingdom, there lived a hardworking hero named Mr. Current (Electric Current). Every day, Mr. Current carried energy from the Power Castle to...

ELECTRICAL BASICS

how cable filing is done in cable tray?

1️⃣ What is mm² in cable? mm² = Square millimeterIt tells the cross-sectional area of the copper conductor inside the cable — not the outer diameter. 🔹Example: 2.5 mm² cable means the copper area is 2.5 mm² 4 mm²...