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Electrical safety
Identify the dangers associated with: (a) damaged insulation (b) overheating cables (c) wet conditions (d) excessive current due to overloading plugs, extension leads, and sockets when using mains electricity.
5
Objectives
50
Flashcards
35
Questions
90 min
Study time
CambridgeIGCSEPhysicsElectricity and magnetism
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5 objective pages available
Electrical safety outcomes5 objectives
- Identify the dangers associated with: (a) damaged insulation (b) overheating cables (c) wet conditions (d) excessive current due to overloading plugs, extension leads, and sockets when using mains electricity.
- Understand that a mains circuit includes a live wire, a neutral wire, and an earth wire, and describe why the switch should be connected to the live wire to safely turn off the circuit.
- Describe how trip switches and fuses work, and select suitable fuse ratings and trip switch settings for protection.
- Explain the necessity for the outer casing of electrical appliances to be either non-conductive (double-insulated) or earthed for safety.
- Recognize that a fuse without an earth wire provides protection for the circuit and wiring of a double-insulated appliance.
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IdentifyStateKnowExplainDetermine
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