Electrical Wiring (Integrated Science)

Which of the following fuses is BEST suited for a 5 amp string of Christmas lights?

• 2 A fuse

• 5 A fuse

• 6 A fuse

• 10 A fuse

What is the correct colour code for the LIVE wire?

• purple

• brown

• blue

• yellow-green

What is the correct colour code for the NEUTRAL wire?

• brown

• blue

• yellow-green

• white

What is the correct colour code for the EARTH wire?

• brown

• blue

• yellow-green

• orange

Which wire should the FUSE be connected to, in the plug of a 3-flex cord for an appliance?

• live wire

• neutral wire

• earth wire

• it should not be connected to any wire

Which two wires carry the current through an appliance under NORMAL operation?

• live and earth wires

• earth and neutral wires

• live and neutral wires

Which wire will take excess current safely to the ground, in the event that there is a short circuit in an appliance, and it becomes electrified?

• live wire

• neutral wire

• earth wire

Which of the following appliances is MOST LIKELY to have a 3-pin plug (as opposed to a 2-pin plug)?

• a cell-phone charger

• a small desk-fan

• a string of Christmas tree lights

• a washing machine

Overhead electrical cables are always made out of thick wires because thick wires

• have a high resistance

• have a low resistance

• are easier to install

• are cheaper

Which wire is always connected to the inner casing of an electrical appliance?

• live wire

• earth wire

• neutral wire

• all three wires