7. Inspection & Testing Mock

Why should all documentation given after initial verification be kept in a safe place?

• Adds value if selling the property

• To reduce insurance premiums

• As reference for any persons inspecting any work at a later date

• To comply with any local authority inspections

Answer explanation

To comply with any local authority inspections

For safety reasons, what is the recognised status for undertaking and signing off inspection and test work?

• a skilled person

• an instructed person

• a person qualified in PAT testing

• a person who is a member of the IET

Answer explanation

To undertake and sign off inspection and test work for safety reasons, the recognized status required is a skilled person.

On which two documents is prospective fault current recorded?

• Minor Electrical Installation Works Certificate and Schedule of Inspections

• Electrical Installation Certificate and Schedule of test results

• Electrical Installation Certificate and Minor Electrical Installation Works Certificate

• Schedule of Inspections and Schedule of test results

Answer explanation

Prospective fault current is recorded on the Electrical Installation Certificate and Schedule of test results.

Which is one of the documents that must accompany an Electrical Installation Certificate?

• Minor Electrical Installation Works Certificate

• Landlords safety certificate

• Electrical indemnity certificate

• Schedule of Inspections (Note: and Schedule of Test Results)

Answer explanation

One of the documents that must accompany an Electrical Installation Certificate is the Schedule of Inspections (Note: and Schedule of Test Results).

On completion of electrical work, all appropriate documentation should be

• Given to the building inspector

• Retained by the electrician

• Left next to the mains position

• Given to the person ordering the work

Answer explanation

The appropriate documentation should be given to the person ordering the work to ensure all necessary records are maintained and accessible.

Functional testing may involve

• Insulation resistance testing

• Disconnecting an appliance

• Turning on a light switch

• Continuity testing

Answer explanation

Functional testing may involve turning on a light switch to check if it functions properly.

A check for phase sequence at the main intake to a three phase installation indicated a result of L1, L3, L2. The correct orientation at each subsequence distribution board is

• L1, L3, L2

• L2, L3, L1

• L2, L1, L3

• L3, L2, L1

Answer explanation

The correct orientation at each subsequence distribution board is L1, L3, L2 as indicated by the phase sequence result at the main intake.

One reason for testing that the phase sequence is the same across an installation is

• The hold-on relay in motor starters can be connected to the correct phase

• Fluorescent lamps will not make moving machinery appear stationary

• The installer will know the direction of rotation of three phase machines

• Power factor correction capacitors can be connected the right way around

Answer explanation

The installer will know the direction of rotation of three phase machines

The table shows the results for a test carried out on a 30mA RCD to BSEN 61008, that is being used for additional protection. Which statement best describes the result of the test?

• The RCD fails as it should trip within 0.4s at 15mA leakage

• The RCD fails as it should trip within 300ms at 30mA leakage

• The RCD passes as it trips quicker than all the required tripping times

• The RCD fails as it should trip within 0.02s at 150mA leakage

Answer explanation

The RCD fails as it should trip within 300ms at 30mA leakage

What is the minimum permitted value to be found on a protective device at the origin of 230V single phase circuit where Ze is 0.12Ω?

• 1500

• 6000

• 3000

• 10000

Answer explanation

The minimum permitted value on a protective device is calculated using the formula: Minimum Permitted Value = 230V / 0.12Ω = 1916.67V. Rounding up, the minimum value is 3000V.