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. Why might an appliance not need to use the earth wire?

It would cost more to use an earth connection.
It uses an AC supply.
It only needs a 3A fuse.
It's double-insulated (non-conductive body) and low power.


Question 2. If an appliance draws a 4A current which standard fuse value (for the UK) should be used in its plug?

5A.
3A.
4A.
13A.


Question 3. How does a fuse protect us?

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


Question 4. Which wire is coloured brown?

Neutral.
Earth.
Live.
Mains.


Question 5. Which is not a standard mains wire colour in the U.K?

Brown.
Blue.
Black.
Striped green and yellow.


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