{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/us/wire-size/schema.json",
  "title": "Wire Voltage Drop Screening Calculator — United States inputs",
  "description": "Screen the resistive voltage drop of a DC or idealized single-phase two-conductor circuit using explicit material resistivity. USD planning view; stated limitations apply.",
  "type": "object",
  "properties": {
    "unitSystem": {
      "title": "Measurement system",
      "type": "string",
      "default": "imperial",
      "enum": [
        "imperial",
        "metric"
      ],
      "x-optionLabels": {
        "imperial": "Imperial (US gallons / short tons where relevant)",
        "metric": "Metric"
      }
    },
    "length": {
      "title": "One-way conductor length",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 98.42519685039369,
      "minimum": 0.03280839895013123,
      "maximum": 3280839895013.123,
      "x-suffix": "ft"
    },
    "current": {
      "title": "Load current, A",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 20,
      "minimum": 0,
      "maximum": 1000000,
      "x-step": 0.01
    },
    "voltage": {
      "title": "Supply voltage, V",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 230,
      "minimum": 0.01,
      "maximum": 1000000,
      "x-step": 0.01
    },
    "resistivity": {
      "title": "Conductor resistivity at the assumed temperature",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0.010526783637574182,
      "minimum": 0.00006015304935756675,
      "maximum": 0.6015304935756675,
      "x-suffix": "Ω·kcmil/ft"
    },
    "wireArea": {
      "title": "Entered conductor cross-section",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 7.89410096555994,
      "minimum": 0.001973525241389985,
      "maximum": 1973525241389.985,
      "x-suffix": "kcmil"
    },
    "dropLimit": {
      "title": "Design voltage-drop allowance",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 3,
      "minimum": 0,
      "maximum": 50,
      "x-step": 0.1,
      "x-unit": "percent"
    },
    "unitRate": {
      "title": "Material price per conductor length unit",
      "type": "number",
      "description": "Zero means unpriced, not free. Enter a current, scoped supplier quote. Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 304800000000,
      "x-prefix": "USD",
      "x-suffix": "/ft",
      "x-unit": "currency"
    },
    "laborCost": {
      "title": "Total labor allowance",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-step": 0.01,
      "x-prefix": "USD",
      "x-unit": "currency"
    },
    "deliveryCost": {
      "title": "Delivery allowance",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-step": 0.01,
      "x-prefix": "USD",
      "x-unit": "currency"
    },
    "otherCost": {
      "title": "Other fixed costs",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-step": 0.01,
      "x-prefix": "USD",
      "x-unit": "currency"
    },
    "costMultiplier": {
      "title": "Material/labor multiplier",
      "type": "number",
      "description": "Use a verified regional index only when supplied. 1 is an unadjusted scenario, not a researched index. Illustrative starting value; replace with your own evidence.",
      "default": 1,
      "minimum": 0.1,
      "maximum": 10,
      "x-step": 0.01
    },
    "spreadPercent": {
      "title": "Low/high sensitivity around the entered total",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 15,
      "minimum": 0,
      "maximum": 100,
      "x-step": 0.1,
      "x-unit": "percent"
    },
    "taxRate": {
      "title": "Explicit tax allowance",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 100,
      "x-step": 0.1,
      "x-unit": "percent"
    }
  },
  "required": [
    "length",
    "current",
    "voltage",
    "resistivity",
    "wireArea",
    "dropLimit",
    "unitRate",
    "laborCost",
    "deliveryCost",
    "otherCost",
    "costMultiplier",
    "spreadPercent",
    "taxRate"
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "20.16.0",
    "calculatorUrl": "https://askcalculators.com/us/wire-size/",
    "queryExample": "https://askcalculators.com/us/wire-size/?unitSystem=imperial&length=98.42519685039369&current=20&voltage=230&resistivity=0.010526783637574182&wireArea=7.89410096555994&dropLimit=3&unitRate=0&laborCost=0&deliveryCost=0&otherCost=0&costMultiplier=1&spreadPercent=15&taxRate=0",
    "migrationStatus": "new",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "formula": {
      "expression": "two-wire voltage drop = 2 × resistivity × one-way length × current ÷ conductor cross-section.",
      "note": "Inputs are converted to canonical units before evaluating this stated formula."
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/v20-us-wire-size.json",
      "qualifiedReview": "pending",
      "qualifiedReviewer": null,
      "qualifiedReviewDate": null,
      "formulaVersion": "20.16.0",
      "referenceCoverage": "references-listed",
      "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
      "historicalMetadataDate": "",
      "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
    },
    "outputs": {
      "voltageDrop": {
        "title": "Two-conductor voltage drop, V",
        "type": "number",
        "x-format": "number",
        "x-digits": 2
      },
      "dropPercent": {
        "title": "Voltage drop as percentage of supply",
        "type": "number",
        "x-format": "number",
        "x-digits": 2
      },
      "minimumArea": {
        "title": "Cross-section required for the entered drop allowance",
        "type": "number",
        "x-format": "number",
        "x-digits": 2
      },
      "materialCost": {
        "title": "Material cost",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2
      },
      "laborCost": {
        "title": "Labor allowance",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2
      },
      "deliveryCost": {
        "title": "Delivery allowance",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2
      },
      "otherCost": {
        "title": "Other specified costs",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2
      },
      "tax": {
        "title": "Entered tax allowance",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2
      },
      "low": {
        "title": "Low cost scenario",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2
      },
      "mid": {
        "title": "Middle cost scenario",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2,
        "x-primary": true
      },
      "high": {
        "title": "High cost scenario",
        "type": "number",
        "x-format": "currency",
        "x-currency": "USD",
        "x-digits": 2
      }
    }
  }
}