Fault Diagnosis & Rectification - Quiz 3

Select the test Instrument which is specifically designed and approved for verifying that a circuit is dead.

• A

• B

• C

• D

The list shows an Isolation procedure with the final step missing. What is the final step to achieving a safe isolation?

• - Select an approved voltage detector, and check the voltage detector on a known supply.

• - Identify the circuit or equipment to be worked on.

• - Identify the means of Isolation.

• - Isolate the circuit by

• – Switching off withdrawing.

• - Verify the circuit or equipment is dead.

• - Apply Warning Labels.

• Obtain manufacturer or circuit diagrams

• Recheck that the voltage detector is working correctly

• Commence the work

• Inform the customer the circuit is isolated

What is the potential implication of isolating the supply in an installation that includes IT equipment?

• The introduction of high protective conductor currents p330 Textbook when supply is on

• Loss of data if not shut down correctly

• Disconnection of surge protection devices during isolation procedure

• Damage to sensitive equipment during insulation resistance testing

An electrician has mistakenly switched off the circuit breaker to the downstairs sockets in a consumer unit. The electrician intends to work on the upstairs sockets. Which of the following is a possible consequence of this action?

• The electrician might look for a fault that isn't there

• The electrician may receive an electrical shock

• The downstairs sockets will not work

• The home owners will find themselves in darkness

A document listing how a particular task will be undertaken and followed is known as a

• Hazard list

• Statement of intent

• Method statement

• Risk assessment

An electrician working on a faulty machine's control panel in a large factory finds a fuse which has blown, and there are no spares for that size. The immediate safe action to take is to

• Report this to the stores

• Fit the nearest smaller fuse size

• Report to the maintenance supervisor for advice

• Fit the nearest larger fuse size

Whilst carrying out a periodic inspection and testing procedure on an electrical installation, the inspection has revealed an apparent deficiency which could not be fully identified. What action should the engineer take?

• Isolate the installation until the deficiency has been proven or not

• Assume the worst and classify as code C1 that danger is present & immediate remedial action is required

• Identify on the report that further investigation is required

• Classify as code C3 and recommend improvements

An engineer has just completed an Electrical Installation Condition Report. What action should the engineer now take?

• The owner of the installation should be given the original report, with the copy going to local Authority, and the person who requested the report, if this is not the owner.

• The Local Authority should be sent the original report and a copy given to the person who ordered the report

• The engineer should keep the original report and send a copy to the National Inspection Council

• The person ordering the report should be given the original report and the engineer should keep a duplicate copy

A number of faults are found when carrying out a periodic inspection. The report when complete can be used to develop.

• Planned maintenance

• Safety procedures

• Emergency procedures

• Unplanned maintenance

While working on a faulty machine, it is necessary to leave the control panel door open when going to the other side of the machine. To prevent others from accidentally coming too close to the panel contents, a safe procedure to follow should include the use of:

• A padlock on the isolator

• Barriers preventing access to the panel

• A danger notice on the isolator

• A signed permit to work before starting