Math & Numbers

Cable Voltage Drop Calculator

Compute cable voltage drop from current, length, conductor size (AWG/mm²) and material, for DC, single-phase and three-phase circuits

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/voltage-drop-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"current":15,"lengthM":30,"material":"copper","sizeMode":"awg","awg":"12","areaMm2":2.5,"circuit":"dc1p","sourceVoltage":120}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/voltage-drop-calculator

Parameters

Name	Type	Required	Description
current	number	Yes	—
lengthM	number	Yes	—
material	select	No	—
sizeMode	select	No	—
awg	select	No	—
areaMm2

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-voltage-drop-calculator": {
      "name": "voltage-drop-calculator",
      "description": "Compute cable voltage drop from current, length, conductor size (AWG/mm²) and material, for DC, single-phase and three-phase circuits",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=voltage-drop-calculator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "voltage-drop-calculator",
    "arguments": {
  "current": 15,
  "lengthM": 30,
  "material": "copper",
  "sizeMode": "awg",
  "awg": "12",
  "areaMm2": 2.5,
  "circuit": "dc1p",
  "sourceVoltage": 120
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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