Phase 3 - Electrical checkpoint test 2

Which one of the following should be carried out before any electrical work takes place?

• Safe isolation.

• Safe insulation.

• Safe continuity.

• Safe polarity.

Which one of the following units should be used to check if a circuit is dead?

• Multimeter.

• RCD.

• Proving.

• OHMs.

Which one of the following tests should be carried out on insulation?

• Polarity.

• Resistance.

• Impedance.

• Continuity.

The floor area covered by a ring final circuit must not exceed

• 25 m²

• 50 m²

• 75 m²

• 100 m²

The main protection on a domestic consumer unit is provided by which one of the following?

• RCD.

• RBC.

• MCB.

• MCD.

A 9.8 kW shower should be protected by a circuit breaker rated at

• 35 amp

• 40 amp

• 45 amp

• 50 amp

Which one of the following tests should be carried out to ensure that phase and neutral are not cross connected?

• Polarity

• Resistance

• Impedance

• Continuity

The electrical circuit which provides a dedicated supply for a boiler is called

• a ring main

• a radial circuit

• a spur

• an ancillary circuit

Which one of the following tests should be carried out on the earthing circuit with the circuit live?

• Earth loop impedance

• Insulation resistance

• Polarity

• Earth continuity

The standard UK grid voltage for regional distribution is ...

• 11 KV

• 33 KV

• 132 KV

• 400 KV