The exercise platform is under construction. The pages are available for preview — features will be enabled gradually.
Interactive exercises for electricians
Practical design scenarios, compliance errors to spot and fix, and educational animations to grasp electrical principles — all based on the I7-2011 standard.
General concepts
AVAILABLEAnimated visualisations: current flow, MCB curves, how an RCD works, Ohm’s and Kirchhoff’s laws, magnetic fields.
Glossary of electrical terms
AVAILABLEA searchable dictionary: protective devices, earthing systems, quantities and switchgear — simple definitions plus the notes from the standard.
Compliance calculators
AVAILABLECable cross-sectional area sizing (with K1/K2 factors, copper and aluminium), voltage drop, a step-by-step guide and interactive exercises on 3 levels. Compliant with I7-2011.
Fully functional — calculators, single-phase/three-phase comparator and a pocket calculator.
Three-phase balancing
AVAILABLEInstallations with unbalanced phases. Redistribute loads across R/S/T until the imbalance drops below 15%.
Protection selectivity
AVAILABLEMCB, RCCB and RCBO wiring errors. Simulate the fault and correct the order and ratings of the protective devices.
I7 compliance errors
AVAILABLEProjects with deliberate mistakes against I7-2011. Find the errors, fix them, run the validator and get a score.
Free design
AVAILABLEA circuit designer on the real engine (calc-engine), a recipe of the minimum circuits and design exercises driven by the client’s request — validated against I7 in real time.
The three wiring diagrams
BETAMulti-line, single-line and developed: where each of them comes from on the 2D plan, with three levels of exercises and a verdict on the circuit you wire yourself.
Circuit simulator
BETACurrent, voltage drop, Ib ≤ In ≤ Iz sizing and tripping on short circuit for a single-phase or three-phase circuit.
Electrical panel simulator
BETAWire a single-phase panel, press TEST, cause a short circuit or an overload and watch the breaker trip — real simulation.
Lightning risk calculator (ND)
BETAHow many direct lightning strikes hit a building per year, whether the risk exceeds the tolerable threshold and what the lightning protection installation calls for — the separation distance, the rolling sphere method and the rules for panels on the same roof.
Roof + solar panels
BETADraw the roof and see how many panels fit, in what layout and what installed power comes out of it, plus the minimum distance from the obstacles that cast shade in winter and the reference figures for tilt.
PV system sizing
BETAFrom the consumption to the module string: kWp and number of panels, panel ↔ inverter compatibility at −15 °C and with a hot cell, the current and the string fuse on the DC side — with the articles of I7-2011 ch. 7.11 quoted wherever they apply.
Photovoltaic autonomy (panels + batteries)
BETAHow many panels and which batteries you need to get through the winter: production and autonomy by month and by season, with real location data, plus the classic off-grid sizing (Wp, battery Ah, charge controller).
Wiring simulator
BETAInteractive step-by-step 3D simulation: Schuko socket, switches (single and double), two-way and intermediate switches, plus single-phase and three-phase distribution boards. You crimp the conductors, connect them to the correct terminals (L, N, PE) and test the circuit. Based on SR HD 308 S2:2002 and I7-2011.
Working now with placeholder geometry — more scenarios and realistic 3D models in preparation. Your feedback helps us prioritise.
Want to publish your own exercises?
Teachers and electricians can build scenarios from their own projects and share them with the community or with their students (private access code).