Electrical Contractor Course

Lesson 1 • Alternating Current Fundamentals

Introduces AC waveforms, frequency, and phase relationships essential for commercial work. Bridges DC theory to the AC systems dominant in contractor practice.

Lesson 2 • Ohm's Law and Power Calculations

Applies Ohm's Law to calculate unknown circuit values and introduces power formulas. Connects mathematical relationships to practical load sizing decisions.

Lesson 3 • Voltage, Current, and Resistance

Introduces the three fundamental electrical quantities and their relationships. Establishes the conceptual base for all subsequent circuit analysis work.

Lesson 4 • Magnetism and Electromagnetic Induction

Covers magnetic fields, flux, and the principles behind electromagnetic induction. Provides the theoretical basis for understanding transformers and motors covered later.

Lesson 1 • Electrical Hazard Recognition

Identifies shock, arc flash, and fire hazards present on job sites. Builds the hazard-awareness foundation required before any hands-on electrical work begins.

Lesson 2 • Lockout and Tagout Procedures

Teaches the step-by-step process for de-energising and verifying electrical equipment. Ensures students can protect themselves and coworkers during maintenance and installation tasks.

Lesson 3 • Job Site Safety Planning

Addresses pre-task planning, safety briefings, and hazard communication on electrical job sites. Integrates safety culture into daily contractor workflow and crew management.

Lesson 1 • Structure of Electrical Installation Standards

Explains how electrical codes are organised, amended, and adopted by authorities. Gives students a navigation framework for locating requirements during design and installation.

Lesson 2 • Permit, Inspection, and Approval Process

Walks through the permit application, inspection scheduling, and certificate of occupancy process. Prepares students to manage regulatory milestones on real contractor projects.

Lesson 3 • Overcurrent Protection Standards

Addresses fuse and circuit breaker sizing rules for conductors and equipment. Connects protection device selection to load calculations and code compliance.

Lesson 4 • Wiring Methods and Material Requirements

Details approved wiring methods, conductor types, and installation conditions. Directly supports compliant material selection for residential and commercial projects.

Lesson 1 • Service Entrance and Panel Installation

Covers meter base, service entrance conductors, and main panel assembly. Builds hands-on competency for the most critical connection point in a residential system.

Lesson 2 • Residential Load Calculations

Applies standard calculation methods to determine service size for residential buildings. Directly enables accurate panel and service entrance design for new and remodel projects.

Lesson 3 • Residential Low-Voltage Systems

Introduces doorbell, thermostat, and structured wiring systems common in residential work. Expands contractor capability to handle full-scope residential electrical scopes.

Lesson 4 • Branch Circuit Wiring Techniques

Teaches rough-in wiring for lighting, receptacle, and dedicated appliance circuits. Connects wiring methods to code requirements and inspection readiness.

Lesson 1 • Motor Circuits and Controls

Addresses motor branch circuit sizing, starter selection, and overload protection. Connects electrical theory to the motor-driven equipment prevalent in commercial facilities.

Lesson 2 • Three-Phase Power Systems

Explains wye and delta configurations, phase relationships, and three-phase power calculations. Provides the theoretical foundation for all commercial distribution and motor work.

Lesson 3 • Conduit Installation and Raceway Systems

Covers bending, cutting, and pulling conductors through rigid and flexible conduit systems. Builds the hands-on skills central to commercial rough-in and finish work.

Lesson 4 • Commercial Load Calculations

Applies demand factor and diversity methods to size commercial service and feeders. Enables accurate design of distribution systems for offices, retail, and light industrial spaces.

Lesson 1 • Switchgear and Panelboard Equipment

Covers the components, ratings, and installation of switchgear, switchboards, and panelboards. Prepares students to work safely with main distribution equipment on large projects.

Lesson 2 • Metering and Power Monitoring

Introduces current transformers, potential transformers, and revenue-grade metering equipment. Connects metering knowledge to energy management and utility billing accuracy.

Lesson 3 • Transformer Principles and Types

Reviews electromagnetic induction as applied to step-up, step-down, and isolation transformers. Establishes the theoretical basis for transformer selection and sizing decisions.

Lesson 1 • Motor and Control Circuit Diagnostics

Addresses troubleshooting of motor windings, starters, and control circuits under load. Extends diagnostic skills to the motor systems introduced in the commercial chapter.

Lesson 2 • Power Quality and Earthing Diagnostics

Covers voltage sag, harmonic distortion, and earthing system integrity testing. Prepares students to resolve power quality complaints that affect sensitive commercial equipment.

Lesson 3 • Test Instruments and Their Use

Covers multimeters, clamp meters, megohmmeters, and circuit tracers used in field diagnostics. Builds instrument proficiency required before applying any troubleshooting methodology.

Lesson 4 • Systematic Troubleshooting Methods

Teaches half-split, cause-and-effect, and symptom-based diagnostic strategies. Provides a repeatable framework that reduces diagnostic time and minimises unnecessary component replacement.

Lesson 1 • Project Scheduling and Crew Management

Applies scheduling tools and crew coordination techniques to electrical project delivery. Connects field leadership skills to on-time, on-budget project completion.

Lesson 2 • Contractor Licensing and Insurance

Covers licensing exam preparation, bond requirements, and insurance types for electrical contractors. Ensures students understand the legal prerequisites for operating a contracting business.

Lesson 3 • Estimating and Bidding Electrical Work

Teaches material takeoff, labour unit pricing, and overhead markup to produce competitive bids. Directly enables students to price work accurately and win profitable contracts.

Lesson 4 • Contract Documents and Change Orders

Explains contract types, scope definitions, and the change order process for electrical work. Protects students from scope creep and underpayment on commercial and residential projects.