Guides & validation
Plain-language notes on the IEC 62305 standards behind the tools, and exactly how each engine is checked. Written for practising engineers — clause-grounded, no reproduced tables.
Articles
One building through IEC 62305 — Parts 2, 3 and 4, in order
Read →IEC 62305 · Parts 2, 3 & 4
IEC 62305-2: what changed in the 2024 edition
Read →IEC 62305-2
The free IEC 62305-2 tools, and which edition each one computes
Read →IEC 62305-2
Where the lightning density comes from
Read →IEC 62305-2
The separation distance, worked through
Read →IEC 62305-3
What decides whether an SPD actually protects anything
Read →IEC 62305-4
How each study is validated
Each engine is reconciled figure-by-figure against independent published worked examples and the standards' own case studies. See the method for each: