ai.sparkquote/nec-calculators

up checked 2026-11-11T03:39:06.784Z

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Publisher-provided title

SparkQuote NEC calculators

Publisher-provided description

NEC 2023 electrical calculators: wire size, ampacity, voltage drop, conduit fill, box fill, load.

Summary by lookupd

Runs NEC 2023 electrical calculations such as wire sizing, conduit and box fill, voltage drop, service load, and bid pricing.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http nec-calculators https://sparkquote.ai/mcp

Codex, remote (streamable-http)

codex mcp add nec-calculators --url https://sparkquote.ai/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "nec-calculators": {
      "url": "https://sparkquote.ai/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (10 tools)

Publisher-provided text

• wire_size Minimum conductor size for a circuit: NEC Table 310.16 ampacity at the termination temperature rating, the 240.4(D) small-conductor limits, voltage drop over th
• voltage_drop Voltage drop for a given conductor size, current and one-way length, single- or three-phase, from NEC Chapter 9 Table 8 circular mils (VD = 2·K·I·L / CM, or √3
• watts_to_amps Current drawn by a load in watts at a voltage and power factor, single- or three-phase, plus the 125% continuous-load value.
• conduit_fill Percent fill and maximum number of THHN/THWN-2 conductors of one size in EMT or PVC Schedule 40, from NEC Chapter 9 Tables 1, 4 and 5.
• box_fill Minimum outlet box volume from NEC 314.16(B): conductor, device (2 each), clamp and grounding allowances times the Table 314.16(B) volume for the largest conduc
• load_calculator Dwelling service load by the NEC 220.82 optional method: 3 VA/ft² lighting, small-appliance and laundry circuits, fixed appliances, demand factor, heating or co
• ohms_law Ohm's law and power: give exactly two of voltage, current, resistance and power; the other two are calculated.
• panel_schedule Lays circuits out on a 120/240 V single-phase or 208Y/120 V three-phase panel and totals the load per phase with the imbalance.
• bid_calculator Electrical bid price from materials, markup, labor hours and rate, job costs, overhead and a target net margin (price = break-even / (1 − margin)).
• nec_ampacity Allowable ampacity of one insulated conductor from NEC Table 310.16 (not more than three current-carrying conductors in a raceway or cable, 30°C ambient), befor

Details

• Version: 1.0.1
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 547 ms
• First indexed: 2026-11-01T08:50:59.862Z
• Last seen in registry: 2026-11-01T08:50:59.872Z
• Website: https://sparkquote.ai/tools/mcp-server

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• Last crawl: 2026-11-11T15:38:39.561Z
• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp