Fuse and safety precautions

The ______________ _______________ (lightning circuit, main fuse, power circuit) controls total current that flows into a circuit in a house.

The _______________ ______________ (circuit breakers, power circuit, main switch) controls current supply to all circuits in homes.

The ______________ ________________ (electric metre, circuit breakers, power circuit) breaks circuit if a large surge of current passes such as lightning strikes.

The ____________ ______________ (earth wire, live wire, neutral wire) carries electric current from substation to house.

The earth wire represent with ____________ colour.

• Brown

• Blue

• Red

• Yellow and green stripes

The 2-pin plug have the following items except

• Live wire

• Neutral wire

• Earth wire

A fuse is a thin wire installed in a circuit to _________________.

• Protect the electrical appliances

• Has a thick wire

• Has high melting point

• Low resistance

Choose the correct statement about fuse.

• Cartridge fuse is replaceable

• Fuse with holder is replaceable

• The cartridge fuse are found in the main fuse.

• The replaceable fuse is found in electrical appliances.

Given a lamp with 50 Watt and the voltage is 240V, choose the best fuse for this lamp.

• 1A

• 2A

• 3A

• 5A

An electric kettle has 1500 W and 240 V, choose the best fuse for the kettle.

• 1A

• 2A

• 5A

• 10A