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VoltPlan Wiring Diagrams

by YUZU-Hub · remote · local (npm) · no sign-in to list tools · v0.2.2 · published by GitHub user YUZU-Hub

Generate 12V/24V/48V wiring diagrams and size wires, fuses, batteries, solar, and inverters.

Changes · 8
CompareRegistry entry

9 tools: 8 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http wiring-diagram https://mcp.voltplan.app/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

9 tools

Changes things 8Claude Code: ask
  • calculate_battery_bankCalculate the recommended battery bank size based on daily energy consumption.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Calculate the recommended battery bank size based on daily energy consumption. Accounts for days of autonomy (how many days without charging) and depth of discharge. Returns required capacity, number of batteries, and wiring configuration.
  • calculate_battery_configDetermine how to arrange batteries in series and/or parallel to achieve a target voltage and capacity.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Determine how to arrange batteries in series and/or parallel to achieve a target voltage and capacity. Returns the number of batteries needed, the wiring configuration (e.g. 2S3P), and step-by-step wiring instructions.
  • calculate_charging_timeEstimate how long it takes to charge a battery bank from a given state of charge to a target level.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Estimate how long it takes to charge a battery bank from a given state of charge to a target level. Accounts for the bulk charging phase (constant current, up to ~80% SoC) and the slower absorption phase (tapering current, 80-100% SoC). Works for any charging source: solar, shore power, alternator.
  • calculate_inverter_sizeCalculate the recommended inverter size for running AC loads from a DC battery system.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Calculate the recommended inverter size for running AC loads from a DC battery system. Accounts for continuous power, startup surge power (motors typically surge 2-3x), and includes a 25% headroom for the continuous rating. Returns the recommended inverter wattage and the DC current draw at system voltage.
  • calculate_power_budgetCalculate total daily energy consumption from a list of electrical loads.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Calculate total daily energy consumption from a list of electrical loads. Each load specifies its power draw, how many hours per day it runs, and quantity. Returns total daily energy (Wh and Ah), peak power draw, and average power. This is typically the first step in sizing a battery bank and solar system.
  • calculate_solar_sizeCalculate the required solar panel wattage to cover daily energy consumption.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Calculate the required solar panel wattage to cover daily energy consumption. Accounts for peak sun hours at the location and system efficiency losses (MPPT conversion, wiring, temperature derating). Returns required wattage and common panel configurations.
  • calculate_wire_gaugeCalculate the recommended wire gauge / cable cross-section for a DC circuit.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Calculate the recommended wire gauge / cable cross-section for a DC circuit. Considers both ampacity (current carrying capacity) and voltage drop to recommend the optimal cable size. Also returns total resistance, power loss, and a fuse recommendation. Supports copper conductors from 0.75 mm² (18 AWG) to 240 mm² (300 MCM).
  • generate_wiring_diagramGenerate an electrical wiring diagram for campers, boats, or off-grid setups.No findings

    Why it is in this group

    • The name "generate_wiring_diagram" says "generate": a word for a change.
    Description, as the server wrote it
    Generate an electrical wiring diagram for campers, boats, or off-grid setups. Returns a complete schematic with batteries, chargers, protection components, and loads. Protection components (shunt, main switch, low-voltage cutoff) are auto-generated when both batteries and loads are provided.
Only reads 1Claude Code: allow
  • list_component_typesList all available component types and example configurations for building wiring diagrams.No findings

    Why it is in this group

    • The name "list_component_types" says "list": a word for reading.
    Description, as the server wrote it
    List all available component types and example configurations for building wiring diagrams. Use this to understand what parameters are needed before calling generate_wiring_diagram.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.2.2. Values in angle brackets are yours to fill in.

claude mcp add --transport http wiring-diagram https://mcp.voltplan.app/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__wiring-diagram__list_component_types"
    ],
    "ask": [
      "mcp__wiring-diagram__generate_wiring_diagram",
      "mcp__wiring-diagram__calculate_wire_gauge",
      "mcp__wiring-diagram__calculate_power_budget",
      "mcp__wiring-diagram__calculate_battery_bank",
      "mcp__wiring-diagram__calculate_solar_size",
      "mcp__wiring-diagram__calculate_charging_time",
      "mcp__wiring-diagram__calculate_inverter_size",
      "mcp__wiring-diagram__calculate_battery_config"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as wiring-diagram. Review it before you use it.