Unit 208 electrical 2025

Which British Standard details the requirements for the correct installation of electrical components in domestic properties?

• BS 5449

• BS 6700

• BS 7671

• BS 8000

Which of the following is the correct description of a spur circuit?

• Supply from the meter to a component

• Supply from the consumer unit to an immersion heater

• Branch connection from a ring main circuit

• Branch connection from a main earthing cable

What component is used in a domestic property to house the circuit protection devices?

• Junction box

• Meter

• 13 amp socket outlet

• Consumer unit

What type of component is shown in the following diagram?

• Fuse

• Residual current device

• Miniature circuit breaker

• Junction box

What is the circuit breaker rating required to control the supply to an 8.5kW instantaneous electric shower fed with a 240v AC supply?

• 6 amp

• 16 amp

• 32 amp

• 40 amp

A capacitor may be fitted to which of the following components?

• Jacuzzi pump

• Consumer unit

• Junction box

• Room thermostat

Which of the following plumbing components in a domestic property will usually require a 2.5mm² heat proof flex?

• Electric shower

• Immersion heater

• Central heating pump

• Macerator WC

Which of the following correctly lists the sheathing colour in a modern 3 core flex?

• Blue Brown Green/Yellow

• Yellow Blue Brown/Green

• Red Brown Green/Yellow

• Brown Blue Green/Yellow

What is the name of the connector shown in the following diagram?

• Pillar terminal

• Strip connector

• Claw washer

• Terminal connector

Knots and coils should not be left in cables during installation as they can lead to –

• Corrosion of the cable

• Reduction in resistance of the circuit

• Reduction in cable insulation

• Heating of the cable during use