Engineering Simplified

Browse by topic

New lessons on a steady cadence, organised into playlists so you can go deep on one subject.

Power & fundamentals

Electrical Engineering Explained

Ohm's law, voltage, current and power, from first principles through to real systems.

Power systems

Substation Engineering Explained

How high-voltage substations switch, protect and earth the network, the way it works on site.

Infrastructure

Data Centre Engineering Explained

Where the power goes, why redundancy matters, and what happens when supply is lost.

Life safety

Life Safety System Engineering Explained

Fire alarms, pre-action sprinklers and the systems that protect people and buildings.

Mechanical

Mechanical Engineering Explained

How machines, fluids and mechanical systems work, explained step by step.

Materials & structures

Materials & Structural Engineering Explained

Where materials come from, such as how metals are made, and how structures use them.

Calculations

Engineering Calculations

Worked calculations you can follow, like solar panel payback for the UK and Ireland.

Everyday

Everyday Engineering

The engineering inside things you use every day, like how a surge protector works.

Physics

Physics Made Simple

Big ideas in plain language, like how falling water becomes electricity.

Maths

Math Fundamentals Explained

Slope of a line, linear equations and more, worked through with clear examples.

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Study resources built from the videos, for students and working engineers.

Digital downloads

Files you can download straight after purchase.

Digital download

Study notes

Clear, structured notes that follow the lessons, so you can revise a topic without re-watching the video.

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Digital download

Excel calculation sheets

Ready-to-use spreadsheets with the formulas built in, so you can check your own working and run real calculations.

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Prices and checkout will appear here at launch.

Manuals

Printed reference manuals for engineers and technicians, available on Amazon.

Design manual & workbook · Amazon

Fire Alarm System Design Explained

Ireland & UK · Detection · Warning · Standby power

Understand how fire behaves, choose the right detection and warning equipment, then design the system and work through the calculations, including standby power.

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In development

More manuals

New manuals will follow the topics on the channel. Follow on YouTube to hear when each one is released.

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Merch

Gear for people who read datasheets for fun. Coming soon.

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In development

The Engineering Simplified study workbook

A workbook for engineering students with worked examples and practice problems, written in the same plain style as the videos. Follow the channel to hear when it launches.

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Sample problem · Voltage drop

A 50 m single-phase run of 16 mm² copper cable carries 20 A at 230 V. What is the voltage drop?

ΔV = 2 × L × I × ρ ÷ A
   = 2 × 50 × 20 × 0.0175 ÷ 16
   = 2.19 V

2.19 ÷ 230 = 0.95 % of supply

ρ = 0.0175 Ω·mm²/m for copper at 20 °C. Cable-sizing limits vary by standard, so always check the rules that apply to your installation.

Real-world engineering

Try it: Ohm's law

Browse by topic

Electrical Engineering Explained

Substation Engineering Explained

Data Centre Engineering Explained

Life Safety System Engineering Explained

Mechanical Engineering Explained

Materials & Structural Engineering Explained

Engineering Calculations

Everyday Engineering

Physics Made Simple

Math Fundamentals Explained

Shop

Digital downloads

Study notes

Excel calculation sheets

Manuals

Fire Alarm System Design Explained

More manuals

Merch

The Engineering Simplified study workbook