Electrical Fault Finding 8

Which of the following correct regarding safe isolation and investigating an electrical fault?

• Begin investigation, verify circuit is dead, isolate and lock off, re-check voltage device

• Obtain permission, check voltage device, verify circuit is dead, isolate and lock off, re-check voltage device, begin investigation

• Begin work, lock off, verify circuit is dead, re-check voltage device, begin investigation

• Obtain permission, isolate and lock off, check voltage device, verify circuit is dead, re-check voltage device, begin investigation

Answer explanation

The correct choice outlines the proper sequence: obtaining permission, isolating and locking off the circuit, checking the voltage device, verifying the circuit is dead, re-checking the voltage device, and then beginning the investigation.

The very first action involved in carrying out safe isolation to:

• Test the circuit

• Shut off, lock off then assess all hazards

• Assess all hazards through a risk assessment

• Carry out a full functional test.

Answer explanation

The first step in safe isolation is to assess all hazards through a risk assessment. This ensures that all potential dangers are identified before proceeding with any further actions.

When applying safe isolation protocols you:

• Can work on live circuits

• Can use the circuit identification as found

• Need to correctly identification the circuit

• Can use the mains to check test equipment.

Answer explanation

Correctly identifying the circuit is crucial for safety when applying isolation protocols. Additionally, using the mains to check test equipment is acceptable, ensuring proper functioning without risking safety.

The HSE recommends which of the following in order to embrace safety?

• Approved volt stick

• Equipment listed and endorsed by BS 7671

• Equipment listed and endorsed by GS38

• Approved neon screwdriver.

Answer explanation

The HSE emphasizes using equipment endorsed by GS38 for safety in electrical work, as it ensures compliance with safety standards and reduces risks associated with electrical testing.

The legislation that prohibits live working except in exceptional circumstances is:

• Provision and Use of Work Equipment Regulations (1992)

• Personal Protective Equipment Regulations (1992)

• BS 7671 Requirements for Electrical Installations

• Electricity at Work Regulations (1989).

Answer explanation

The Electricity at Work Regulations (1989) specifically prohibit live working except in exceptional circumstances, ensuring safety in electrical installations.

Whilst carrying out fault diagnosis, a serious issue had come to light. Your actions should be to:

• Leave the circuit as it is and go and inform the client in a clear and courteous manner

• Ensure the circuit is safe then go and inform the client in a clear and courteous manner

• Complete the investigation and then inform the client in a clear and courteous manner

• Carry on with the investigation and then inform the client when you see them next.

Answer explanation

Ensuring the circuit is safe is crucial to prevent any hazards before informing the client. This choice prioritizes safety while maintaining clear communication, which is essential in fault diagnosis.

Keeping the customer abreast of development and any correction work in a clear, courteous and accurate manner:

• Makes good business sense

• Ensures that safety is maintained

• Can boost your earnings

• Justifies any extra expense.

Answer explanation

Keeping customers informed makes good business sense as it builds trust and loyalty. Additionally, clear communication about safety measures ensures that safety is maintained, protecting both customers and the business.

Which of the following will physically reduce the possibility of interference from unauthorised personnel?

• Barriers

• Polite notices

• Secure locked devices

• Multiple number of keys

Answer explanation

Barriers and secure locked devices physically restrict access, reducing the chance of interference from unauthorized personnel. Polite notices and multiple keys do not provide physical security.

Notices can only be effective if:

• They are well positioned

• They inform management only

• They are clear and accurate

• They are popular.

Answer explanation

Notices are effective when they are well positioned and clear and accurate. This ensures that the intended audience receives the message correctly, making the communication more impactful.

When fault finding, which of the following apply to customer relations?

• The electrician needs to be flexible and sensitive regarding when supply can be isolated

• The electrician needs to be discourteous if they encounter a customer

• The electrician does not have to worry about the impact of noise

• The electrician does not have to worry about any damage incurred.

Answer explanation

The correct choice emphasizes the importance of being flexible and sensitive when isolating supply, which is crucial for maintaining good customer relations during fault finding.