MCP server

SparkQuote NEC calculators Official

ai.sparkquote/nec-calculators

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

sparkquote.ai (verified by the MCP Registry)

Status

Working at last check

Tools

10

Token cost

About 3,059 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.nec-calculators]
url = "https://sparkquote.ai/mcp"

Gemini CLI

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

Cursor

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

VS Code

{"servers":{"nec-calculators":{"type":"http","url":"https://sparkquote.ai/mcp"}}}

Antigravity

agy mcp add nec-calculators https://sparkquote.ai/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"nec-calculators","server_url":"https://sparkquote.ai/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"nec-calculators","server_url":"https://sparkquote.ai/mcp"}

Tools

• bid_calculator ~286 tokens
  Electrical bid price from materials, markup, labor hours and rate, job costs, overhead and a target net margin (price = break-even / (1 − margin)).
• box_fill ~303 tokens
  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 conductor.
• conduit_fill ~341 tokens
  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.
• load_calculator ~432 tokens
  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 cooling, and the minimum standard service size. Leave an appliance out to count it as 0 VA.
• nec_ampacity ~250 tokens
  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), before any adjustment or correction factors and before the 240.4(D) small-conductor limits.
• ohms_law ~160 tokens
  Ohm's law and power: give exactly two of voltage, current, resistance and power; the other two are calculated.
• panel_schedule ~264 tokens
  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.
• voltage_drop Deletes data · ~416 tokens
  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 for three-phase).
• watts_to_amps ~217 tokens
  Current drawn by a load in watts at a voltage and power factor, single- or three-phase, plus the 125% continuous-load value.
• wire_size ~390 tokens
  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 the run, and the Table 250.122 equipment grounding conductor, increased in proportion under 250.122(B) when voltage drop upsizes the conductor

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