Junction Current Check (Kirchhoff's Current Law)

What goes in must come out.

Enter the current going in, and the currents you measured in each branch going out. Everything is worked out in your browser. Nothing is saved or sent anywhere.

1. In

2. Out (leave unused at 0)

3. Results

How it was worked out

    What this does and doesn't tell you

    • A clamp meter makes branch currents easy to measure without cutting wires.
    • Unexplained current can point to a hidden load or a leak to earth.
    • 240V AC mains can kill. In Australia, work on household mains wiring must be carried out by a licensed electrician. Low-voltage DC systems can still deliver very high current.
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