Electrical Safety

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off.

switched fuse live blown prevent

connected switch fuse live wire

Slide 41

Electrical Safety Check Test

8. Describe the most dangerous thing that can happen to an appliance.

9. What happens to you if you touch the casing of an appliance which is live and why?

10. Describe how the earth wire acts as a safety device?

Slide 42

Electrical Safety Check Test

11. Copy and complete the following notes filling in the blanks using words from the word bank.

The wire is a device which is connected to the of appliances. The earth wire provides a

for the electrical to flow if the live wire becomes and touches the casing making it . The large which flows through the earth wire will

the fuse switching the off.

appliance current live earth loose

safety casing melt path current

Slide 43

Electrical Safety Check Test Answers

1. Name three safety devices that appliances have.

2. These devices are designed to stop you from being electrocuted and to prevent the appliance from being damaged.

The fuse.

The switch.

The earth wire.

Slide 44

Electrical Safety Check Test Answers

3. A fuse is a thin piece of wire which will melt when too much current passes through it.

Current is a flow of electricity and is measured in amps (A).

4. What 2 safety devices control the amount of electricity that enters an appliance?

The fuse.

The switch.

Slide 45

Electrical Safety Check Test Answers

5. Which wire are these 2 safety devices connected to ?

6. Which wire allows electricity to enter an appliance?

The live wire.

The live wire.

Slide 46

Electrical Safety Check Test

7. The fuse and switch must be connected to the live wire to prevent the appliance from remaining live when the fuse is blown or the appliance is switched off.

8. Describe the most dangerous thing that can happen to an appliance.

The most dangerous thing that can happen is that the live wire can become loose inside an appliance and touches the casing.

Slide 47

Electrical Safety Check Test Answers

9. What happens to you if you touch the casing of an appliance which is live and why?

10. Describe how the earth wire acts as a safety device?

If you touch the LIVE casing, you could be electrocuted as you are providing a path for the electricity to flow.