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-calculatorParameters
| 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]