9189PH3ELECTPPT4

What is a radial circuit commonly used to supply in domestic settings?

• Lighting fixtures

• High-power kitchen appliances

• Showers and central heating systems

• Portable electronic devices

What is the maximum floor area that an A3 Radial circuit can cover?

• 20m²

• 50m²

• 100m²

• 150m²

What size of PVC cable is used in an A3 Radial circuit?

• 1.0mm² PVC cable

• 1.5mm² PVC cable

• 2.5mm² PVC cable

• 3.0mm² PVC cable

What is the minimum live conductor cross sectional area (CSA) for a radial circuit with an overcurrent protective device rating of 30 or 32 A using copper conductor thermoplastic or thermosetting insulated cables?

• A) 1.5mm²

• B) 2.5mm²

• C) 4mm²

• D) 6mm²

For a radial circuit with an overcurrent protective device rating of 20 A, what is the minimum CSA for copper conductor mineral insulated cables?

• A) 1.0mm²

• B) 1.5mm²

• C) 2.5mm²

• D) 4.0mm²

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

• To supply the water outlets

• To supply the socket outlets

• To supply the lighting fixtures

• To supply the gas lines

How many ring mains may there be for an average property?

• One

• Two

• Three

• Four

Where are electricians now choosing to install radials instead of ring mains?

• Throughout the property, except the kitchen

• Only in the upstairs area

• Only in the downstairs area

• Only in the bathroom

What is the maximum floor area that an A1 Ring main can cover?

• 50m²

• 100m²

• 120m²

• 150m²

What type of cable is used in the ring main diagram?

• 2.5mm² PVC cable

• 1.5mm² mims cable

• 2.0mm² rubber cable

• 1.0mm² PVC cable