Snapquiz - Household Electrical Safety

This is the Snapquiz on Household Electrical Safety. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. Which is not a standard mains wire colour in the U.K?

Striped green and yellow.
Blue.
Brown.
Black.


Question 2. How does a fuse protect us?

It limits large currents, only allowing a set amount of current to flow.
It detects when a large current flows, switching off the power.
It predicts large currents, then disables the device.
It melts when a large current flows, breaking the circuit.


Question 3. Which pin in a UK plug should connect to the fuse?

Any - it doesn't matter.
Bottom right.
Bottom left.
Top centre.


Question 4. Which pin in a UK plug should connect to the blue wire?

Top centre.
Any - it doesn't matter.
Bottom left.
Bottom right.


Question 5. How does an RCCB protect us?

It compares the live and neutral currents and triggers if they're different.
It compares the live and earth currents and triggers if they're the same.
It compares the live and earth currents and triggers if they're different.
It compares the live and neutral currents and triggers if they're the same.


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