Lesson 2
What Off Really Means
See why a dark display can still hide 230 V, take control of an appliance's supply the right way, and work out whether a dead appliance, its plug or the socket is at fault.
Builds on
Predict
Your washing machine has stopped mid-wash. The display is dark and pressing the power button does nothing. The plug is still in the wall socket behind it.
Where could 230 V still be present?
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Choose a prediction, then select Next to see the answer.