Fault lab

Practise diagnosis without risking real parts.

Choose a low-voltage fault case, take simulated meter readings, make a diagnosis, and learn the next safe measurement.

Safety first, always.

ElectroLab AI teaches theory, low-voltage electronics, and planning concepts. Mains voltage, switchboards, fixed wiring, high-current systems, and legal electrical work must only be performed by licensed electricians where required.

Open Safety Center

Fault practice

Open return path

The LED circuit has 5 V on the positive rail, but the LED never lights.

Diagnosis confidence

Choose a measurement

Meter reading

5.02 V across rails

Safety: Voltage mode, power on.

Your diagnosis

Answer

Make a diagnosis to compare against the case.

Why

Voltage is present at the supply, but current cannot complete the loop back to negative.

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Fault lab cases are low-voltage training examples. Mains voltage, fixed wiring, switchboards, high-current systems, and legal electrical work require licensed electricians where required.