012 Practice questions (B)

During routine electrical installation (periodic) condition report activity, the person who determines the date for the following periodic inspection would be the?

• inspector/tester

• customer

• designer

• installer

Answer explanation

The inspector/tester is responsible for determining the date for the next periodic inspection based on the condition of the installation and regulatory requirements, making them the correct choice.

The measured prospective fault current value would be recorded on a?

• minor works certificate

• small works certificate

• electrical installation certificate

• schedule of inspection

Answer explanation

The measured prospective fault current value is recorded on an electrical installation certificate, which documents the details of the electrical installation, including safety measures and test results.

An essential test that would be carried out for a minor works certificate would be?

• prospective fault current

• socket outlet polarity

• R1 + R2

• Ze

Answer explanation

Socket outlet polarity is crucial to ensure that live and neutral connections are correct, preventing electrical hazards. This test is essential for a minor works certificate to confirm safety and compliance.

Within BS7671 certain installations have additional regulations which may include specialist information which can be found in?

• part 2 '

• part 4

• part 6

• part 7

Answer explanation

Part 7 of BS7671 covers additional regulations for specific installations, including specialist information. This makes it the correct choice for finding such regulations.

The Electricity at Work Regulations is classed as?

• a statutory document

• a non-statutory document

• an advisory document

• a guidance note

Answer explanation

The Electricity at Work Regulations is a statutory document, meaning it is legally enforceable and must be followed to ensure safety in electrical work. This distinguishes it from non-statutory or advisory documents.

When the designer of an installation has indicated that the method of fault protection is ADS, it would mean?

• in the event of an earth fault, an RCD will interrupt the supply

• barriers are used for protection

• in the event of a fault, the installation relies on earthing and bonding and the automatic breaking of circuits

• all metalwork must be at an equal potential in case of contact

Answer explanation

ADS (Automatic Disconnection of Supply) means that in the event of a fault, the installation relies on earthing and bonding along with the automatic breaking of circuits to ensure safety.

Before commencing the inspection and testing of a new installation, the information you should have available would be?

• the supply insulation colour

• the inspection and testing results

• the maximum demand per phase

• a copy of the wiring regulations

Answer explanation

The maximum demand per phase is crucial for ensuring the installation can handle the expected load. This information helps in assessing the adequacy of the system before inspection and testing.

Two ways in which an electric shock could occur are?

• direct and fault contact

• basic and fault contact

• direct and basic contact

• basic and earth contact

Answer explanation

Electric shocks can occur through basic contact, where a person touches a live part, and fault contact, which happens when a fault in the system allows current to flow unexpectedly. Thus, 'basic and fault contact' is correct.

The safest method of making sure an installation is safe to work on would be?

• to check the installation with a multifunction tester

• to ensure the RCDs are functional

• to isolate the installation at the main cut-out

• to follow the safe isolation procedure

Answer explanation

The safest method is to follow the safe isolation procedure, as it ensures all sources of power are properly disconnected and verified, minimizing the risk of electric shock during work on the installation.

EAW regulations states that working on a live circuit can be acceptable unless?

• suitable tools are used

• suitable PPE is worn

• it is unreasonable in all the circumstances for it to be dead

• a supervisor gives you permission

Answer explanation

EAW regulations allow working on live circuits only if it is unreasonable for the circuit to be dead. This ensures safety and compliance, making it the correct choice.