What the current app can do, the four-step workflow, and the 20 guided templates that open pre-built in the editor. Where a template has a written walkthrough, the card links to it — read the theory, or skip straight to building.
Features to use before you start the circuit walkthroughs: templates for fast starts, wiring control, fault testing, and tools for larger diagrams.
Open 20 built-in guided circuits straight inside the app: ten starter circuits (lamps, one-way and two-way switching, RCD fault checks, contactors, timers, a push-button doorbell, an RCBO socket) and ten Pro scenarios — three-phase motor control, EV charging, solar with battery storage, underfloor heating, staircase timers, PIR floodlights, cooker supplies, surge-protected consumer units, generator backup and AFDD bedrooms.
Inject wire breaks, reverse polarity, and missing-earth faults directly on the canvas, then compare the warning and error feedback.
Use default smart right-angle routing around components, or enable custom wiring to place manual checkpoint corners for real cable-run teaching.
Export circuits as JSON, SVG, PNG, PDF/print sheets, or shareable URLs. Import is schema-validated so broken files do not corrupt your work.
Use drag-select, copy/paste, alignment, distribution, mini-map navigation, zoom-to-fit, gridless mode, and colour presets for larger diagrams.
Choose light, dark, or system theme, high-contrast and colour-blind canvas palettes, and reduced visual effects for lower-powered devices.
Start with a template when you want a working example, then inspect, modify, fault-test, and export it.
Open Templates in the app and choose a guided circuit that matches the concept you want to learn.
Run the simulation and follow live, neutral, and earth through the highlighted wire paths.
Toggle switches, move components, reroute wires, or inject faults to see how the circuit responds.
Export JSON, SVG, PNG, PDF/print, or a shareable URL when the diagram is ready.
The app ships 20 built-in guided circuits with loaded components, wires, steps, and expected outcomes. Every card opens its guide inside the editor. Every one of them has a written walkthrough in this guide — build it in the app first, or read the theory first.
Trace live through an MCB to a bulb and follow neutral back to source.
Open in ElectraSim →📖 Or follow the written walkthrough →Learn why a switch belongs on the live conductor, not the neutral return.
Open in ElectraSim →📖 Or follow the written walkthrough →Split one switched live through a junction box and see each lamp keep full voltage.
Open in ElectraSim →📖 Or follow the written walkthrough →Compare COM, L1, and L2 traveller paths as either switch changes state.
Open in ElectraSim →📖 Or follow the written walkthrough →Put a dimmer in the live conductor instead of a plain switch, on a dimmable lamp only.
Open in ElectraSim →📖 Or follow the written walkthrough →Inspect an RCD-protected socket branch with an intentional earth-fault warning.
Open in ElectraSim →📖 Or follow the written walkthrough →Switch a motor load through a contactor after MCB protection.
Open in ElectraSim →📖 Or follow the written walkthrough →Use a timer switch as a controlled live path feeding a bell or buzzer.
Open in ElectraSim →📖 Or follow the written walkthrough →Hold a normally-open push button to energise a protected bell, then release it and watch the circuit open again.
Open in ElectraSim →📖 Or follow the written walkthrough →Supply a socket outlet through an RCBO with switched live and neutral, protective earth, and a plugged-in test load.
Open in ElectraSim →📖 Or follow the written walkthrough →Three phases through per-phase Type-D breakers and a three-pole contactor to a 3-phase motor with its own earth.
Open in ElectraSim →📖 Or follow the written walkthrough →A 7.4 kW charge point behind a rotary isolator and an RCBO, with a direct protective earth.
Open in ElectraSim →📖 Or follow the written walkthrough →A 12 V DC bus shared by a PV array and a battery through a lever connector, feeding a low-voltage LED.
Open in ElectraSim →📖 Or follow the written walkthrough →A Type-C MCB and a heating thermostat switching both poles to the underfloor heating mat.
Open in ElectraSim →📖 Or follow the written walkthrough →A staircase timer holds an LED light on for the preset time, then switches it off automatically.
Open in ElectraSim →📖 Or follow the written walkthrough →A PIR sensor powered across live and neutral switches a halogen floodlight on detection.
Open in ElectraSim →📖 Or follow the written walkthrough →A dedicated circuit through a cooker control unit feeds an induction hob, isolatable at the unit.
Open in ElectraSim →📖 Or follow the written walkthrough →The supply lands on a Type 2 SPD before the board; one way feeds an RCBO-protected socket branch with a test lamp.
Open in ElectraSim →📖 Or follow the written walkthrough →A standby generator with a dedicated earth rod feeds an MCB-protected emergency light and siren.
Open in ElectraSim →📖 Or follow the written walkthrough →An AFDD-RCBO protects a bedroom final circuit feeding a socket and lighting point.
Open in ElectraSim →📖 Or follow the written walkthrough →The circuit walkthroughs place every component by hand, one connection at a time.