Unit 012 understand inspection, testing (Revision)

What does the Electricity at Work Regulations specifically require a person carrying out inspection and testing to be?

• Competent.

• Ordinary.

• Responsible.

• Instructed.

How must an isolated circuit be secured?

• Using a warning notice.

• With a lock having one key.

• With a lock having many keys.

• Using tape over the circuit breaker.

What does a proving unit do?

• It checks that a circuit is safe to work on.

• It checks that a circuit breaker is secured.

• It simulates a supply to test the isolated circuit.

• It simulates a supply to test the Voltage indicator.

Which test cannot be safely undertaken on a circuit that is not securely isolated?

• Phase sequencing.

• Insulation resistance.

• Prospective fault current.

• Earth fault loop impedance.

What must an inspector consider, for safety reasons, before isolating a supply?

• Mobile phones are fully charged.

• Lifts are not operating or occupied.

• Emergency lights are fully discharged.

• Fire alarms batteries are disconnected.

What should never be undertaken unless a building is fully isolated?

• Remove the cover from a socket-outlet.

• Undertake earth fault loop impedance testing

• Disconnect main protective bonding conductors.

• Check the phase sequence of the supply.

Which IET Guidance Note is specific to the Initial Verification process?

• GN1

• GN3

• GN6

• GN8

Which of the following documents is statutory?

• EWR

• BS 7671

• HSE GS38

• GN2

What are the first three tests undertaken on a newly installed radial circuit?

• Continuity of CPC, Continuity of Ring, Insulation Resistance.

• Continuity of Ring, Insulation Resistance, Polarity.

• Continuity of Ring, Polarity, Earth Electrode Resistance.

• Continuity of CPC, Insulation Resistance, Polarity.

What test is undertaken at the origin of an installation?

• R1

• Ze

• rn

• Zs