- Published on
What a hazardous area is, why it matters, and how zones, Ex equipment, and competent design work together.
Electrical, Control and Industrial Cyber Security Engineering
Practical engineering guides, calculators and project notes covering electrical design, BS 7671, control panels, hazardous areas, IEC 62443, OT cyber security and industrial automation.
Latest technical guides
Recent practical writing on electrical, control and industrial engineering.
- Published on
A practical guide to BS 7671 from an electrical design engineer's perspective, covering design inputs, load assessment, cable sizing, protection, earthing, verification, and documentation.- Published on
A practical guide to IEC 62443, the NCSC Cyber Assessment Framework, UK cyber law, zones and conduits, network segmentation, secure remote access, industrial firewalls, asset management, patching, and cyber security across the engineering lifecycle.- Published on
A practical account of how I joined the IET, used Career Manager, understood UK-SPEC and applied for Engineering Technician registration during my year in industry.
Engineering tools and calculators
Practical browser-based tools for repeatable, reviewable engineering calculations.
Control Panel Load Calculator
Create AC and DC load schedules, assess individual supply rails, and produce a traceable engineering calculation report.
Open calculator →Control Panel Heat Calculator
Calculate component heat losses, estimate enclosure temperature rise, and assess natural or forced ventilation requirements.
Open calculator →Main engineering subject areas
Guides and working notes organised around the disciplines that shape industrial design decisions.
Electrical design
Practical guidance on BS 7671, design decisions, protection and documentation.
Explore electrical design →Control systems
Notes on control panels, automation architecture and dependable system design.
Explore control systems →Industrial cyber security
Engineering-focused guidance on IEC 62443, OT risk and secure industrial systems.
Explore industrial cyber security →Hazardous areas
Clear introductions to area classification, Ex equipment and ignition control.
Explore hazardous areas →Engineering tools
Browser-based calculators for traceable control-panel design calculations.
Explore engineering tools →About Jonny Wilson
I am a design engineer working across electrical design, control systems, industrial automation and industrial cyber security. This site is a personal technical resource for practical guides, engineering notes, calculators and lessons from real engineering work.
Professional enquiries
Relevant enquiries concerning design engineering, control systems, industrial automation, OT cyber security, technical writing, training and speaking are welcome.
View professional enquiry information →Free practical engineering training
OT Cyber Security Foundations
A practical introduction to operational technology cyber security for engineers working with control systems, industrial networks and automation equipment.
Apply each topic to the fictional Riverside Water Transfer Station and build a coherent cyber-security design basis as you progress.
- 15 modules
- Approximately 9 hr 40 min
- Foundation to intermediate
- Free and self-paced