Safe isolation quiz

What does Regulation 14 of the Electricity at Work Regulation 1989 require before beginning work on any live installation?

• All tools must be inspected and approved before use.

• A written work order must be obtained before starting the work.

• Only qualified personnel are allowed to work on live circuits.

• Circumstances make it unreasonable to conduct work on dead circuit; It is reasonable given circumstances to work in or near live circuit; and Suitable precautions are taken prior to work.

What is the first step in minimum safe isolation procedures?

• Carry out earthing and short circuiting.

• Switch off installation/circuit to be isolated.

• Identify correct isolation point or device.

• Verify with voltage indicating device that no voltage is present.

What should be checked after identifying the correct point of isolation?

• Condition of voltage indicating device.

• If the equipment is still operational.

• The functionality of the locking-off device.

• The presence of any secondary source of energy.

What is the purpose of using a proving unit?

• To test the insulation of cables.

• To confirm that the voltage on the indicating device is functioning correctly.

• To check the battery life of the device.

• To measure the resistance of the circuit.

What is essential to prevent the supply being reinstated?

• Verifying no voltage is present with a voltage indicating device.

• Re-confirming that the voltage indicating device functions correctly.

• Locking off the device used to isolate the installation circuit.

• Posting warning notices.

What should be done when isolating the main source of energy?

• Check the voltage with a multimeter.

• Notify the electricity provider.

• Isolate any secondary source of energy as well.

• Only switch off the main breaker.

Why is it important to ensure that the correct point of isolation is identified?

• To ensure safety and prevent the equipment from becoming electrically charged during work.

• To avoid unnecessary work.

• To save time.

• To prevent damage to the equipment.

What is the preferred method to secure the point of isolation?

• Using a standard lock.

• Using an appropriate locking-off device.

• Taping the switch in the OFF position.

• Placing a warning sign near the isolation point.

What is the significance of suitable labeling of the disconnected conductors?

• It is vital to prevent the supply being reinstated.

• It is a legal requirement.

• It ensures that the cables are easily visible.

• It helps in identifying the correct cables for future reference.