5357 - 012 sample questions

Who, under the Electricity at Work Regulations, should the inspector ensure the safety of?

• Themselves.

• The client and others.

• Both themselves and others.

• Staff in other buildings owned by the client.

Where is the correct location to test that a lighting circuit is isolated and safe to work on?

• At the supply intake position.

• On the supply side of the circuit protective device.

• At any convenient luminaire.

• On the load side of the circuit protective device.

How many keys must be available for a lock that is used to securely isolate a protective device?

• 1.

• 2.

• 3.

• 4.

Why is safe isolation carried out?

• To allow earth fault loop impedance testing.

• To allow phase sequencing testing.

• To stop RCDs operating when testing.

• To stop contact with live parts.

What must be done before tests are carried out in a large, unoccupied building with a standby generator?

• Check the operation of the standby supply.

• All main protective bonding must be disconnected.

• Temporary lighting must be installed for all escape routes.

• The standby supplies must be isolated to ensure safe testing.

The implications of not carrying out a safe isolation could lead to prosecution. Which statutory legislation would be used for this purpose?

• COSHH.

• ESCQR.

• EAWR.

• BS 7671.

Which document is statutory?

• BS 7671.

• EAWR.

• GN3.

• GS38.

Which publication does not include model forms that can be used for certification and reporting purposes?

• HSE Guidance Note GS38.

• The IET On-Site Guide.

• IET Guidance Note 3.

• BS 7671.

Which test would not apply to an electrical installation forming part of a TN-S system?

• Earth fault loop impedance.

• Insulation resistance.

• Earth electrode resistance.

• Functional tests.

Which test could also indicate the supply polarity?

• External earth fault loop impedance.

• Continuity of protective conductors.

• Insulation resistance.

• Continuity of ring final circuits.