Observed arrival · 2026-09-26
Wirewhy: a wiring simulator that teaches by letting you break things
A free browser-based electrical wiring simulator for building circuits, testing faults, and seeing how current and protective devices behave.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Electrical learners, teachers, and installation professionals
- Worth noticing
- Fault paths are numbered from the supply, with breaker curves B, C, and D and RCD ratings from 10 to 500 mA described.
Field notes
The described solver updates when wires are connected or controls are operated, and reports readings on the wires as well as at loads. Fault-finding is presented as a trace from the supply, while teaching features include self-checking exercises, hidden-fault puzzles, and a live class-follow mode. The homepage lists support for TN-C-S, TN-S, and TT earthing systems and names English, Polish, and Portuguese as available languages.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue