Anderson Plug Size Calculator

Pick a plug size that stays cool at your current.

This picks the smallest common Anderson-style plug size rated above your current with 25% headroom. The cable and fuse still set what is safe. Everything is worked out in your browser. Nothing is saved or sent anywhere.

1. Your current

The highest current that flows through the plug in normal use.

2. Results

How it was worked out

    What this does and doesn't tell you

    • Plug ratings are the maker's figures for genuine plugs. Cheap copies may not reach them.
    • Use contacts that match the cable size, and crimp them with the right tool.
    • The fuse protects the cable. Size the cable for the current and run length first.
    • Work on 240V AC wiring, including inverter outputs and mains inlets, must be done by a licensed electrician. For high-current DC gear, follow the maker's installation manual and have an auto electrician check your work if you're unsure.
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