Open standard for electrical diagrams (single-line and multi-line), as code: JSON format, Python library, web viewer and MCP server.
An open standard to describe electrical installations, and the reference Python library that validates them, checks them against rules and draws their single-line and multi-line diagrams.
You describe the installation (sources, protective devices, cables, loads, PLCs) in a .uniwire.json file or in Python, and uniwire computes the drawings. No coordinates, no CAD file: a text file you can review and diff.
Format: .uniwire.json, format 1.0, defined by the specification and validated by a published JSON Schema: . Library: pip install uniwire: Python API, code-first builder and the uniwire command line. Documentation: Web viewer: , paste a document to validate, check and draw it in the browser.
Single-line and multi-line diagrams from the same document: the multi-line view derives every conductor (L1, L2, L3, N, PE, PEN) from the single-line data, with no extra input. 53 node types: utility grid, transformers, generators, UPS, PV, batteries, inverters; breakers, RCDs, RCBOs, fuses, switch-disconnectors, contactors, motor starters, transfer switches, SPDs, protection relays, instrument transformers, insulation monitors; busbars, boards, terminal blocks; lighting, sockets, heating, motors, EV chargers, modular PLCs and more. Tree + links: the power tree is the backbone; transfers, bus ties, infeeds, earthing, control, interlocks, trips, measurements and data buses are links. A terminal / connectivity-node graph is derived automatically, with CIM, IFC and IEC 61850 SCL mappings. Closed typing and unit-suffixed fields: inA, idnmA, sectionmm2, pkW; unknown fields are errors (cali
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