Periodic Inspection and Testing of Electrical Installations

What would be the correct procedure to confirm that the existing electrical installation in a dwelling is suitable for the additional wiring of an extension?

• A visual inspection of the wiring and condition of the accessories.

• A full review of the original electrical installation certificate.

• Certification of the additional wiring on completion of the extension.

• A periodic inspection and test of the existing installation.

What is the purpose of a periodic inspection and test relating to the safety of the building?

• There is no risk of electric shock and burns.

• There is no risk of fire caused by the electrical installation.

• That the electrical installation is not damaged.

• That there are no defects or non-compliances present.

What is the minimum level of IP protection for the opening shown as Item A in Figure 1?

• IP4X

• IPX4

• IP2X

• IPX2

What is the minimum level of IP protection for the accessible top surface of a consumer unit?

• IP4X

• IPX4

• IP2X

• IPX2

Which publication gives detailed information for carrying out testing of electrical installations?

• HSE GS 38

• IET Guidance Note 3

• IET Guidance note 1

• HS(G)141

What would be agreed with the client and recorded as a limitation for a periodic inspection and test?

• No insulation resistance testing between live conductors to be carried out.

• The installation can be isolated and a full range of tests to be carried out.

• The finalised report is to be provided to the client electronically.

• Only calibrated test instruments are to be used.

Which statutory document includes the requirements for working on live conductors?

• The Electricity Safety Quality and Continuity Regulations.

• The Construction (Design and Management) Regulations.

• The Health and Safety at Work Act.

• The Electricity at Work Regulations.

What action should the inspector take, both before and after testing, to confirm isolation of the supply?

• Switch the main isolator on and off.

• Lock the main switch on the open position.

• Confirm the operation of the approved voltage indicator.

• Attach a warning label at the isolator stating ‘do not switch on’.

Which human sense is best used to confirm the terminals are suitably tightened?

• Touch.

• Sight.

• Smell.

• Hearing.

What is confirmed when inspecting the conductor insulation?

• Suitable csa.

• Correctly identified.

• Terminals are tight.

• Contained in the terminals.