Electrical Supplies and Equipment Quiz

What is another name for a radial circuit?

• Lighting circuit

• Power circuit

• Data circuit

• Control circuit

What type of appliances does a radial circuit typically feed?

• Television and radio

• Shower, cooker, or central heating system

• Computer and printer

• Refrigerator and microwave

What is the maximum floor area for an A3 radial circuit?

• 100m²

• 250m²

• 500m²

• 750m²

What size PVC cable is used in a radial circuit?

• 1.0mm²

• 2.5mm²

• 4.0mm²

• 6.0mm²

What is the MCB rating for a radial circuit in the consumer unit?

• 10A

• 16A

• 20A

• 32A

What is the maximum floor area served by an A2 radial circuit?

• 50m²

• 75m²

• 100m²

• 125m²

What is the overcurrent protective device rating for an A2 radial circuit?

• 20 A

• 25 A

• 30 or 32 A

• 40 A

What is the minimum live conductor cross-sectional area for copper conductor thermoplastic or thermosetting insulated cables in an A2 radial circuit?

• 1.5 mm²

• 2.5 mm²

• 4 mm²

• 6 mm²

What is a ring main typically used for in a property?

• To supply lighting fixtures

• To supply the socket outlets

• To supply water pipes

• To supply gas lines

How many ring mains are typically found in an average property?

• One

• Two

• Three

• Four