Panel & Switchboard Designer

Web version available (PWA): https://electricalpanel.netlify.app/

Design an electrical panel the way it will actually be built. Choose the devices, route the circuits, check the calculations and print the documents for the electrician and for the panel door.

BUILD A PANEL IN MINUTES

- Panel wizard: say how many rooms you have and which big appliances, and the app makes the circuits and builds the panel. Or start empty and drag devices onto the DIN rail yourself.

- A library of about 150 devices in groups: protection (breakers, RCDs, RCBOs, surge protection), control, metering, automation, DC for solar and batteries, busbars, terminals, transformers and power supplies, accessories.

- Rows, widths in modules and terminal pitch are taken into account: a device that does not fit is refused with a clear reason.

- Ready-made examples for every region, all of them passing the checks.

STANDARDS FOR YOUR COUNTRY

Pick a region and the app follows its conventions: device ratings, cable sizes, wire colours, symbols and layout. Hints and checks refer to the rules:

- Europe: IEC 60364 (cable sizing 5-52, solar 7-712, EV charging 7-722), IEC 60898, surge protection IEC 61643-32, short-circuit currents IEC 60909, enclosure heating IEC 60890

- United Kingdom: BS 7671

- United States and Canada: NEC 2023 (NFPA 70), including panelboards (408) and solar (690)

- Russia: PUE and GOST

- Solar arrays: IEC 62548

Earthing system: TN-C-S, TN-S, TT or IT. In TT the app checks every RCD against the earth electrode resistance and flags circuits without an RCD; in IT it asks for insulation monitoring.

WIRING YOU CAN READ

- Wires are routed automatically, and one button re-lays them.

- Bundle wires into one thick line, like a loom in a real panel.

- Wire colours by function, labels, grid.

- Single-line diagram next to the panel view.

CALCULATIONS AND CHECKS

- design load with demand factors by load type (lighting, sockets, cooking, heating, EV charging, motors) and phase balance

- voltage drop, fault loop impedance, short-circuit currents and breaking capacity

- cable size against breaker and load, and cable short-circuit withstand

- current through RCDs, switches and contactors, motor overload settings, leakage current under each RCD

- selectivity between protective devices

- trip time simulation: how long a breaker takes to open at a given current

- fault simulation: pick a line and see which devices trip and what loses power

- heat inside the enclosure (simplified IEC 60890) to choose its size

- solar and batteries: module voltage at low temperature, MPPT window, inverter current, reverse polarity, fuses larger than the cable, battery discharge current

All remarks are gathered in one list and shown next to the circuit they belong to. Calculations are approximate, and the app says so.

DOCUMENTS

- single-line diagram and calculation report

- circuit schedule and bill of materials

- labels for the panel

PDF export in A4 or A3, portrait or landscape. Save the project to a file and open it later.

SHARE AND WORK TOGETHER

- Link for your customer: a read-only interactive diagram. They can rotate the panel and see what each circuit is for, without changing anything.

- Send by code: the other person types a short code and gets the panel in their own app.

- Shared project: several people edit one panel. A view code for those who look, an edit key for those who change. The app never silently overwrites someone else's work. History keeps 20 versions, and any can be restored.

ANYWHERE, NO ACCOUNT

- no account and no sign-up

- works offline; your projects stay on your device

- 35 languages, including Hindi and right-to-left Arabic, Hebrew and Persian

- no ads

IMPORTANT

The app helps you plan and check a design. It does not replace a qualified electrician or the rules in force where you live. Have the final design reviewed and the work done by a licensed professional.