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Grovy311 49488f4e1b Add optional cable-sizing module 
Per-circuit cross-section recommendation as a separate module attached to
the circuit list. It never writes project data itself: "Übernehmen" applies
cable type, cross-section and length through the regular circuit.update
command, so revisions and Undo/Redo stay intact.

- Pure domain module (src/cable-sizing) with IEC 60364-5-52:2009 Annex B
  tables for PVC and XLPE, copper and aluminium, methods A1, A2, B1, B2, C,
  D1, D2 and E. Every value was cross-checked against public reproductions;
  where sources differ the lower value is used (docs/cable-sizing-module.md).
- Temperature and grouping between table values round to the safer value;
  values outside the tables return no result instead of a factor of 1.
  Ground methods use B.52.18 (D2) and B.52.19 A (D1).
- Overload protection: circuit-breakers In <= Iz; gG fuses additionally
  I2 <= 1.45 Iz with I2 = 1.6/1.9/2.1 In.
- Inputs prefilled from the circuit: power, phase (group or device rows),
  project voltage, power-weighted cos phi, length and protective device.
- Opened from a "Leitungsberechnung" button in the row actions, not from a
  grid cell, so cable cells keep the spreadsheet behavior.
- Stateless API under /api/cable-sizing; no database table or migration.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-26 11:16:18 +02:00
..
archive Rewrite project documentation 2026-07-23 21:05:43 +02:00
spec Add optional cable-sizing module 2026-09-26 11:16:18 +02:00
cable-sizing-module.md Add optional cable-sizing module 2026-09-26 11:16:18 +02:00
circuit-list-editor-api.md Add optional cable-sizing module 2026-09-26 11:16:18 +02:00
circuit-list-editor-architecture.md Remove circuit structure preview 2026-07-31 14:52:37 +02:00
circuit-list-editor-interactions.md Restore circuit drag placement 2026-07-31 08:33:41 +02:00
circuit-list-editor-known-limitations.md Add optional cable-sizing module 2026-09-26 11:16:18 +02:00
current-architecture.md Add optional cable-sizing module 2026-09-26 11:16:18 +02:00
deployment.md Harden the container runtime and shut down cleanly 2026-09-16 11:04:34 +02:00
development-workflow.md Create clean release database baseline 2026-07-31 14:07:26 +02:00
project-history-and-external-model-architecture.md Add public building project setting 2026-07-31 17:41:30 +02:00
README.md Add optional cable-sizing module 2026-09-26 11:16:18 +02:00
revit-requirements-llm-context.md Add public building project setting 2026-07-31 17:41:30 +02:00

README.md

Dokumentationsübersicht

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