⚡ Industrial Electrical Power Engineering: Calculations & System Design

A hands-on calculation course for sizing and analysing low- and medium-voltage industrial power systems — cables, capacitors, transformers, demand charges, arc-flash and solar — with the real equations and worked examples behind each engineering tool. The course is organized into 11 modules, ending with a final exam (pass mark 80%). It is independent, free exam-preparation training — not an official or accredited review course.

What you'll learn

• Foundations: Three-Phase Power, Phasors and the kVA Triangle
• The Per-Unit System: One Common Base for the Whole Network
• Conductor & Cable Sizing: Ampacity, NEC vs IEC
• Voltage Drop: Keeping the Far End Within Tolerance
• Power Factor & Reactive Power: Sizing the Capacitor Bank
• The Economics of PF Correction: Recovering Penalties
• Transformer Loading, Losses and De-rating
• Demand vs Energy: How Utility Bills Are Built
• Arc-Flash: Incident Energy and PPE Category
• Commercial Solar-PV Economics: Yield, Payback and LCOE
• Putting It Together: A Plant Feeder Design Walkthrough

Learning objectives

• Build the per-unit model of a power system and convert impedances across voltage levels and bases.
• Size conductors and compute single- and three-phase voltage drop using NEC and IEC methods, applying temperature and grouping derating.
• Calculate real, reactive and apparent power, and size a capacitor bank in kVAR to correct power factor to a target.
• Justify power-factor correction economically by recovering reactive-power and kVA-demand penalties.
• Evaluate transformer loading, percentage loading, copper and core losses, and ambient/altitude de-rating.
• Distinguish demand (kW/kVA) from energy (kWh), and model time-of-use and peak-shaving savings on a utility bill.
• Estimate arc-flash incident energy and select the correct PPE category and arc-flash boundary.
• Run a commercial solar-PV economic analysis: energy yield, savings, payback, ROI and LCOE.