July 9, 2026 — Merged Electrical tool, live fill, CEC wire, NA/Europe voltages
Path: _pwa-build/ · July 9, 2026 (site v1.0.25) · SW cache v59
Merged Electrical calculator (step menu)
- Single page:
app/tools/electrical.htm + js/electrical-calc.js (RefCalc-style stepper).
- 8 steps: Power (Ohm’s + voltage drop), Motor (MCA/MOP + capacitor), 3-Phase Power, Compressor, Fan, Defrost, Refrigeration Load, Efficiency.
- Hub retired: former 3-card hub replaced; old
ohms-law.htm / voltage-drop.htm / 3phase-power.htm redirect into the merged tool.
- Main site
members/* electrical pages left unchanged.
Coil Airflow-style live fill
- All value slots are blank
<input> fields (no result cards / no -- output placeholders).
- Live reconcile fills missing / derived fields as anchors are entered (Calculate still works).
- Input stability: never overwrite the focused field; protect the just-blurred field; do not blank results on incomplete entry (CLR only clears).
Step 3 — NA / Europe voltages + wye/delta
- Region toggle: NA | Europe (default NA,
localStorage phvac-elec-region).
- NA line-to-line order/default: 208 · 240 · 480 · 600 (default 600).
- NA wye/delta presets: 240 · 347 · 600 (347 = one leg of 600Y).
- Europe: default 400; presets 230 · 400.
- Wye ↔ delta convert: VΔ = VY / √3 and reverse.
Wire / breaker logic (CEC field guide)
- Hard-coded wire map: 15→14 AWG, 20→12, 30→10, 40→8, 50→6, then 60→6, 70–80→4, etc.
- No inrush MOP: removed 2.25× / 2.5× and MCA÷0.8 bumps. MCA = RLA×1.25; breaker/MOP = next standard ≥ MCA (e.g. 40 A RLA → 50 A, not 90 A).
- Applied on compressor, motor circuit, fan, defrost (and related wire fields).
Cache & version
- Service worker
phvac-app-v59 (electrical script cache-busted through development).
- Site version 1.0.25.
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