Electrical Fundamentals for Technicians

A plain-language grounding in voltage, current, AC and DC, three-phase power, site voltage levels, circuit protection and earthing. For technicians, operators and anyone who works around electrical equipment without being an electrician.

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51m

Total time

Competency levels

Lessons

What you'll learn

Explain voltage, current and resistance in plain terms and describe how they relate through Ohm's law
Distinguish AC from DC and explain why power grids generate, transmit and distribute AC
Describe the difference between single-phase and three-phase supplies and where each is used on site
Interpret power ratings in kW and kVA and explain what power factor means in practical terms
Recognise typical LV, MV and HV voltage levels on an industrial site and the access rules that go with them
Explain what fuses, MCBs, MCCBs and RCDs protect against, and why earthing and bonding keep people safe

Curriculum

Progress through each competency level in order.

Awareness

Voltage, Current and Resistance in Plain Terms
Knowledge
2m
AC and DC: Two Kinds of Current
Knowledge
2m
Awareness Check: Electrical Basics
Assessment
7m

Knowledge

Single-Phase, Three-Phase, Power and Power Factor
Knowledge
3m
Site Voltage Levels: LV, MV and HV Awareness
Knowledge
2m
Knowledge Check: Phases, Power and Voltage Levels
Assessment
8m

Skill

Circuit Protection: Fuses, MCBs, MCCBs and RCDs
Knowledge
3m
Assignment: Distribution Board Walkdown
Assignment
3m
Skill Check: Protection Devices in Practice
Assessment
8m

Mastery

Earthing and Bonding: Why They Keep You Alive
Knowledge
3m
Assignment: Teach the Fundamentals
Assignment
3m
Mastery Assessment: Fundamentals Applied
Assessment
7m

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