Snapquiz - Household Electrical Safety

Question 1. What is the earth wire connected to inside the appliance?

The power switch of the appliance.
The neutral power connection of the appliance.
The live components of the appliance.
The metal case or body of the appliance.

Question 2. Which is not a standard mains wire colour in the U.K?

Striped green and yellow.
Brown.
Blue.
Black.

Question 3. What is the normal potential difference of the neutral wire?

230V.
50Hz.
0V.
110V.

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

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

Question 5. Why might an appliance not need to use the earth wire?

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

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