{
"meta": {
"path": "A",
"inverters": 2,
"panels": 28,
"spares": 3,
"kw": 16.1,
"strings": 4,
"n_series": 7,
"string_cold_voc_V": 430.1,
"voc_ceiling_V": 480,
"array_dc_W": 16100,
"pv_usable_W": 16000
},
"pv_string": {
"run": "PV string (array->6000XP MPPT, per string)",
"mode": "pv",
"length_ft": 200,
"vref_V": 307.0,
"current_A": 13.11,
"req_ampacity_term_A": 21.7,
"req_ampacity_derated_A": 17.3,
"ambient_C": 40,
"ccc": 8,
"temp_factor90": 0.91,
"fill_factor": 0.7,
"ampacity_gauge": "12",
"ampacity_75C_A": 25,
"ampacity_derated90_A": 19.1,
"final_gauge_AWG": "8",
"gauge_driver": "voltage-drop",
"final_ampacity_75C_A": 50,
"final_ampacity_derated90_A": 35.0,
"vdrop_pct": 1.329,
"vdrop_V": 4.08,
"target_pct": 2.0,
"ocpd_A": null,
"ocpd_note": "n/a",
"egc_AWG": null,
"vdrop_sweep_pct": {
"150": 0.997,
"200": 1.329,
"250": 1.661
},
"source_fuse_required": false
},
"ac_per_unit": {
"run": "AC per-unit (6000XP->AC combiner)",
"mode": "continuous",
"length_ft": 10,
"vref_V": 240.0,
"current_A": 25,
"req_ampacity_term_A": 31.2,
"req_ampacity_derated_A": 31.2,
"ambient_C": 30,
"ccc": 2,
"temp_factor90": 1.0,
"fill_factor": 1.0,
"ampacity_gauge": "10",
"ampacity_75C_A": 35,
"ampacity_derated90_A": 40.0,
"final_gauge_AWG": "8",
"gauge_driver": "240.4(D) OCPD",
"final_ampacity_75C_A": 50,
"final_ampacity_derated90_A": 55.0,
"vdrop_pct": 0.162,
"vdrop_V": 0.389,
"target_pct": 2.0,
"ocpd_A": 35,
"ocpd_note": "OK",
"egc_AWG": "10"
},
"ac_combined": {
"run": "AC combined (busbar->main panel)",
"mode": "continuous",
"length_ft": 10,
"vref_V": 240.0,
"current_A": 50,
"req_ampacity_term_A": 62.5,
"req_ampacity_derated_A": 62.5,
"ambient_C": 30,
"ccc": 2,
"temp_factor90": 1.0,
"fill_factor": 1.0,
"ampacity_gauge": "6",
"ampacity_75C_A": 65,
"ampacity_derated90_A": 75.0,
"final_gauge_AWG": "4",
"gauge_driver": "240.4(D) OCPD",
"final_ampacity_75C_A": 85,
"final_ampacity_derated90_A": 95.0,
"vdrop_pct": 0.128,
"vdrop_V": 0.308,
"target_pct": 2.0,
"ocpd_A": 70,
"ocpd_note": "OK",
"egc_AWG": "8"
},
"battery_per_pack": {
"run": "Battery per-pack (pack->busbar)",
"mode": "continuous",
"length_ft": 5,
"vref_V": 51.2,
"current_A": 126.01,
"req_ampacity_term_A": 157.5,
"req_ampacity_derated_A": 157.5,
"ambient_C": 30,
"ccc": 2,
"temp_factor90": 1.0,
"fill_factor": 1.0,
"ampacity_gauge": "2/0",
"ampacity_75C_A": 175,
"ampacity_derated90_A": 195.0,
"final_gauge_AWG": "2/0",
"gauge_driver": "ampacity",
"final_ampacity_75C_A": 175,
"final_ampacity_derated90_A": 195.0,
"vdrop_pct": 0.238,
"vdrop_V": 0.122,
"target_pct": 1.0,
"ocpd_A": 175,
"ocpd_note": "OK",
"egc_AWG": "6"
},
"battery_per_inverter": {
"run": "Battery per-inverter (busbar->6000XP)",
"mode": "continuous",
"length_ft": 10,
"vref_V": 51.2,
"current_A": 126.01,
"req_ampacity_term_A": 157.5,
"req_ampacity_derated_A": 157.5,
"ambient_C": 30,
"ccc": 2,
"temp_factor90": 1.0,
"fill_factor": 1.0,
"ampacity_gauge": "2/0",
"ampacity_75C_A": 175,
"ampacity_derated90_A": 195.0,
"final_gauge_AWG": "2/0",
"gauge_driver": "ampacity",
"final_ampacity_75C_A": 175,
"final_ampacity_derated90_A": 195.0,
"vdrop_pct": 0.476,
"vdrop_V": 0.244,
"target_pct": 1.0,
"ocpd_A": 175,
"ocpd_note": "OK",
"egc_AWG": "6"
},
"bank": {
"i_bank_A": 252.0,
"i_pack_A": 126.0,
"i_inv_A": 126.0,
"busbar_min_A": 315.0,
"busbar_A": 350
},
"limits": {
"bank_limit_A": 280,
"bank_headroom_A": 28.0,
"per_inv_limit_A": 140,
"per_inv_headroom_A": 14.0,
"per_pack_binding": "JK-BMS OCP (300s)",
"per_pack_binding_A": 150,
"per_pack_headroom_A": 24.0,
"c_dis": 0.401,
"c_chg": 0.398,
"surge_bank_A": 504.0,
"surge_pack_A": 252.0,
"surge_duration_s": 3.5,
"bank_usable_kwh_80dod": 25.73,
"days_avg": 0.77,
"days_peak": 0.48,
"classT_fuse_A": 175,
"classT_count": 4
},
"production": {
"annual_kwh": 20550,
"pct_load": 168,
"cov_winter": 132,
"cov_summer": 120,
"cov_aug": 96,
"meets_all_seasons": false,
"host": "developer.nlr.gov"
},
"nec_checks": [
{
"section": "690.7",
"status": "PASS",
"evidence": "Max system voltage 430.1V (7S) <= 480V design / 500V abs (validated x4 strings)."
},
{
"section": "690.8(A)",
"status": "PASS",
"evidence": "Per string Isc x1.25 = 17.3A; 1 string/MPPT -> Isc 13.87A <= 25A MPPT rating, Imp 13.11A <= 17A input."
},
{
"section": "690.9(A) Ex",
"status": "PASS",
"evidence": "NO PV source fusing: exactly 1 string per MPPT (no parallel strings) on either 6000XP."
},
{
"section": "690.9 / 710.15",
"status": "PASS",
"evidence": "AC OCPD: per-unit 35A 2-pole x2 (8AWG) at the parallel busbar; combined 70A (4AWG) to main panel."
},
{
"section": "690.11/690.41(B)",
"status": "PASS",
"evidence": "Each 6000XP has integrated PV AFCI + GFDI/isolation (x2 units)."
},
{
"section": "690.12",
"status": "VERIFY-AHJ",
"evidence": "Each 6000XP supplies an RSD initiator if required; same ground-mount/AHJ question as Phase 1."
},
{
"section": "690.13/690.15",
"status": "PASS",
"evidence": "Each 6000XP integrated DC disconnect; bank + per-pack + per-inverter disconnects."
},
{
"section": "690.9/480.9/706.31",
"status": "PASS",
"evidence": "4x 175A Class-T (2 packs + 2 inverter inputs), 20kAIC, <= 2/0 cable 175A."
},
{
"section": "705",
"status": "N/A",
"evidence": "Off-grid. Two inverters PARALLELED (EG4 parallel kit), not utility-interactive; main panel subfed, main breaker locked off."
},
{
"section": "706.7",
"status": "PASS",
"evidence": "2-pack bank on a busbar feeding 2 inverters; bank 252A split 126A/pack (17% under 150A BMS) and 126A/inverter (14A under 140A)."
},
{
"section": "706.x comms",
"status": "VERIFY",
"evidence": "ONE master BMS-CAN link (master pack -> master 6000XP); master shares battery data to slave 6000XP over the EG4 inverter parallel/comms kit; packs daisy-chain pack-to-pack via RS485. NOT two CAN-to-both-inverters links (bus-collision risk). Open-loop fallback viable."
},
{
"section": "Redundancy",
"status": "NOTE",
"evidence": "N+1: one 6000XP can keep ~half the system (8kW PV / 6kW AC) running if the other fails."
},
{
"section": "690.53/54/56",
"status": "ACTION",
"evidence": "Labels: max system voltage 430.1V, 2x inverter output ratings, disconnects, battery hazard."
}
]
}