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Power systems
Clear lessons on electrical, mechanical, life safety, data centre and materials engineering, plus the physics and maths behind them. Built for students and early-career engineers.
Power is P = V × I. Drag the sliders to see why the same resistor can be harmless at 12 V and a fire risk at 230 V.
New lessons on a steady cadence, organised into playlists so you can go deep on one subject.
Ohm's law, voltage, current and power, from first principles through to real systems.
How high-voltage substations switch, protect and earth the network, the way it works on site.
Where the power goes, why redundancy matters, and what happens when supply is lost.
Fire alarms, pre-action sprinklers and the systems that protect people and buildings.
How machines, fluids and mechanical systems work, explained step by step.
Where materials come from, such as how metals are made, and how structures use them.
Worked calculations you can follow, like solar panel payback for the UK and Ireland.
The engineering inside things you use every day, like how a surge protector works.
Big ideas in plain language, like how falling water becomes electricity.
Slope of a line, linear equations and more, worked through with clear examples.
Study resources built from the videos, for students and working engineers.
Files you can download straight after purchase.
Clear, structured notes that follow the lessons, so you can revise a topic without re-watching the video.
Ready-to-use spreadsheets with the formulas built in, so you can check your own working and run real calculations.
Prices and checkout will appear here at launch.
Printed reference manuals for engineers and technicians, available on Amazon.
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.
New manuals will follow the topics on the channel. Follow on YouTube to hear when each one is released.
Gear for people who read datasheets for fun. Coming soon.
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.
Follow on YouTubeSample 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.
Questions about a video, the manuals or study resources, or an idea for working together. Send a message and I'll reply by email.