{
    "meta": {
        "title": "Wire-Sizing & DC Voltage-Drop Reference",
        "description": "Machine-readable ampacity (60/75/90 C) and DC resistance for 26 copper and aluminum conductor rows, AWG 14 to 4/0, from NEC 2023 Table 310.16 and Chapter 9 Table 8, with NEC 240.4(D) small-conductor overcurrent caps and CEC Table 2/4 cross-reference. For sizing ASIC-miner circuits and off-grid solar DC runs.",
        "generated": "2026-06-28T15:34:43+00:00",
        "version": "1.0",
        "license": "https://creativecommons.org/licenses/by/4.0/",
        "license_name": "CC BY 4.0",
        "source": "https://d-central.tech/asic-wire-sizing-reference/",
        "record_count": 26,
        "disclaimer": "Reference only — published code values, not a stamped design. Have a licensed electrician verify all conductor sizing, overcurrent protection, derating and terminations, and follow your local code (the Canadian Electrical Code in Canada) and the authority having jurisdiction."
    },
    "rows": [
        {
            "awg": "14",
            "material": "copper",
            "ampacity_60c": 15,
            "ampacity_75c": 20,
            "ampacity_90c": 25,
            "dc_resistance_ohm_kft": 3.069999999999999840127884453977458178997039794921875,
            "note": "NEC 240.4(D) limits 14 AWG Cu overcurrent protection to 15 A regardless of the 75/90 C ampacity. Resistance is uncoated solid Cu at 75 C (Ch. 9 Table 8); 7-strand reads ~3.14."
        },
        {
            "awg": "12",
            "material": "copper",
            "ampacity_60c": 20,
            "ampacity_75c": 25,
            "ampacity_90c": 30,
            "dc_resistance_ohm_kft": 1.9299999999999999378275106209912337362766265869140625,
            "note": "NEC 240.4(D) limits 12 AWG Cu overcurrent protection to 20 A. Resistance is uncoated solid Cu at 75 C; 7-strand reads ~1.98."
        },
        {
            "awg": "10",
            "material": "copper",
            "ampacity_60c": 30,
            "ampacity_75c": 35,
            "ampacity_90c": 40,
            "dc_resistance_ohm_kft": 1.20999999999999996447286321199499070644378662109375,
            "note": "NEC 240.4(D) limits 10 AWG Cu overcurrent protection to 30 A. Resistance is uncoated solid Cu at 75 C; 7-strand reads ~1.24."
        },
        {
            "awg": "8",
            "material": "copper",
            "ampacity_60c": 40,
            "ampacity_75c": 50,
            "ampacity_90c": 55,
            "dc_resistance_ohm_kft": 0.7640000000000000124344978758017532527446746826171875,
            "note": "Resistance is uncoated solid Cu at 75 C; stranded 8 AWG reads ~0.778. CEC Table 2 gives comparable values."
        },
        {
            "awg": "6",
            "material": "copper",
            "ampacity_60c": 55,
            "ampacity_75c": 65,
            "ampacity_90c": 75,
            "dc_resistance_ohm_kft": 0.49099999999999999200639422269887290894985198974609375,
            "note": "Resistance is uncoated stranded Cu at 75 C (Ch. 9 Table 8)."
        },
        {
            "awg": "4",
            "material": "copper",
            "ampacity_60c": 70,
            "ampacity_75c": 85,
            "ampacity_90c": 95,
            "dc_resistance_ohm_kft": 0.307999999999999996003197111349436454474925994873046875,
            "note": "Resistance is uncoated stranded Cu at 75 C."
        },
        {
            "awg": "3",
            "material": "copper",
            "ampacity_60c": 85,
            "ampacity_75c": 100,
            "ampacity_90c": 110,
            "dc_resistance_ohm_kft": 0.24499999999999999555910790149937383830547332763671875,
            "note": "Resistance is uncoated stranded Cu at 75 C."
        },
        {
            "awg": "2",
            "material": "copper",
            "ampacity_60c": 95,
            "ampacity_75c": 115,
            "ampacity_90c": 130,
            "dc_resistance_ohm_kft": 0.194000000000000005773159728050814010202884674072265625,
            "note": "Resistance is uncoated stranded Cu at 75 C."
        },
        {
            "awg": "1",
            "material": "copper",
            "ampacity_60c": 110,
            "ampacity_75c": 130,
            "ampacity_90c": 145,
            "dc_resistance_ohm_kft": 0.1539999999999999980015985556747182272374629974365234375,
            "note": "Resistance is uncoated stranded Cu at 75 C (19-strand)."
        },
        {
            "awg": "1/0",
            "material": "copper",
            "ampacity_60c": 125,
            "ampacity_75c": 150,
            "ampacity_90c": 170,
            "dc_resistance_ohm_kft": 0.12199999999999999733546474089962430298328399658203125,
            "note": "Resistance is uncoated stranded Cu at 75 C (19-strand)."
        },
        {
            "awg": "2/0",
            "material": "copper",
            "ampacity_60c": 145,
            "ampacity_75c": 175,
            "ampacity_90c": 195,
            "dc_resistance_ohm_kft": 0.09669999999999999429345365342669538222253322601318359375,
            "note": "Resistance is uncoated stranded Cu at 75 C (19-strand)."
        },
        {
            "awg": "3/0",
            "material": "copper",
            "ampacity_60c": 165,
            "ampacity_75c": 200,
            "ampacity_90c": 225,
            "dc_resistance_ohm_kft": 0.07660000000000000142108547152020037174224853515625,
            "note": "Resistance is uncoated stranded Cu at 75 C (19-strand)."
        },
        {
            "awg": "4/0",
            "material": "copper",
            "ampacity_60c": 195,
            "ampacity_75c": 230,
            "ampacity_90c": 260,
            "dc_resistance_ohm_kft": 0.060799999999999999877875467291232780553400516510009765625,
            "note": "Resistance is uncoated stranded Cu at 75 C (19-strand)."
        },
        {
            "awg": "14",
            "material": "aluminum",
            "ampacity_60c": null,
            "ampacity_75c": null,
            "ampacity_90c": null,
            "dc_resistance_ohm_kft": null,
            "note": "NEC Table 310.16 does not list aluminum smaller than 12 AWG; 14 AWG aluminum building wire is not a standard listed size. Use copper at this size."
        },
        {
            "awg": "12",
            "material": "aluminum",
            "ampacity_60c": 15,
            "ampacity_75c": 20,
            "ampacity_90c": 25,
            "dc_resistance_ohm_kft": 3.180000000000000159872115546022541821002960205078125,
            "note": "NEC 240.4(D) limits 12 AWG Al overcurrent protection to 15 A. Resistance is Al at 75 C (Ch. 9 Table 8). CEC Table 4 gives comparable values."
        },
        {
            "awg": "10",
            "material": "aluminum",
            "ampacity_60c": 25,
            "ampacity_75c": 30,
            "ampacity_90c": 35,
            "dc_resistance_ohm_kft": 2,
            "note": "NEC 240.4(D) limits 10 AWG Al overcurrent protection to 25 A. Resistance is Al at 75 C."
        },
        {
            "awg": "8",
            "material": "aluminum",
            "ampacity_60c": 35,
            "ampacity_75c": 40,
            "ampacity_90c": 45,
            "dc_resistance_ohm_kft": 1.2600000000000000088817841970012523233890533447265625,
            "note": "Resistance is Al at 75 C (Ch. 9 Table 8)."
        },
        {
            "awg": "6",
            "material": "aluminum",
            "ampacity_60c": 40,
            "ampacity_75c": 50,
            "ampacity_90c": 55,
            "dc_resistance_ohm_kft": 0.8080000000000000515143483426072634756565093994140625,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "4",
            "material": "aluminum",
            "ampacity_60c": 55,
            "ampacity_75c": 65,
            "ampacity_90c": 75,
            "dc_resistance_ohm_kft": 0.50800000000000000710542735760100185871124267578125,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "3",
            "material": "aluminum",
            "ampacity_60c": 65,
            "ampacity_75c": 75,
            "ampacity_90c": 85,
            "dc_resistance_ohm_kft": 0.403000000000000024868995751603506505489349365234375,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "2",
            "material": "aluminum",
            "ampacity_60c": 75,
            "ampacity_75c": 90,
            "ampacity_90c": 100,
            "dc_resistance_ohm_kft": 0.319000000000000005773159728050814010202884674072265625,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "1",
            "material": "aluminum",
            "ampacity_60c": 85,
            "ampacity_75c": 100,
            "ampacity_90c": 115,
            "dc_resistance_ohm_kft": 0.25300000000000000266453525910037569701671600341796875,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "1/0",
            "material": "aluminum",
            "ampacity_60c": 100,
            "ampacity_75c": 120,
            "ampacity_90c": 135,
            "dc_resistance_ohm_kft": 0.201000000000000011990408665951690636575222015380859375,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "2/0",
            "material": "aluminum",
            "ampacity_60c": 115,
            "ampacity_75c": 135,
            "ampacity_90c": 150,
            "dc_resistance_ohm_kft": 0.1590000000000000024424906541753443889319896697998046875,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "3/0",
            "material": "aluminum",
            "ampacity_60c": 130,
            "ampacity_75c": 155,
            "ampacity_90c": 175,
            "dc_resistance_ohm_kft": 0.12600000000000000088817841970012523233890533447265625,
            "note": "Resistance is Al at 75 C."
        },
        {
            "awg": "4/0",
            "material": "aluminum",
            "ampacity_60c": 150,
            "ampacity_75c": 180,
            "ampacity_90c": 205,
            "dc_resistance_ohm_kft": 0.1000000000000000055511151231257827021181583404541015625,
            "note": "Resistance is Al at 75 C."
        }
    ]
}