Electrical Circuit Arrangements

What is the maximum floor area a single 30A or 32A ring circuit can serve?

• 50 m²

• 75 m²

• 100 m²

• 150 m²

What is the minimum live conductor cross-sectional area for a Type A1 Ring circuit with a protective device rating of 30 or 32 A using copper conductor thermoplastic or thermosetting insulated cables according to the On-Site Guide, Table H2.1?

• 2.5 mm²

• 4 mm²

• 1.5 mm²

• 5 mm²

According to Table H2.1, what is the maximum floor area served by a Type A2 Radial circuit with a protective device rating of 30A or 32A using copper conductor mineral insulated cables?

• 100 m²

• 75 m²

• 50 m²

• 60 m²

Which types of circuit-breakers are applicable for circuits protected by Table H2.1?

• Types B and C to BS EN 60898 or BS EN 61009-1

• Types 1, 2 and 3 to BS 3871

• Types A and B to BS EN 61009-1

What is the minimum conductor size for cables with socket-outlets using thermosetting or thermoplastic (PVC) insulated cables, according to the On-Site Guide?

• 1.5 mm²

• 1 mm²

• 2 mm²

• 0.75 mm²

For a radial circuit A2, what is the minimum current-carrying capacity required for the conductors?

• 27A

• 32A

• 41A

• 13A

What is the maximum current served by a fused spur according to the On-Site Guide?

• 13A

• 16A

• 20A

• 32A

According to the text, permanently connected equipment should be protected by a fuse not exceeding what amperage?

• 10A

• 13A

• 16A

• 20A

What is the maximum current rating for a radial circuit's overcurrent protective device as specified in BS EN 60309-2?

• 15 A

• 20 A

• 25 A

• 30 A

For cooker circuits in household premises, what is the typical appropriate circuit rating for similar cookers up to 15 kW?

• 20 A

• 25 A

• 30 A or 32 A

• 50 A