Electrical Regulations Quiz (Revised)

Which of the following Regulations are non-statutory?

• BS 7671 Requirements for Electrical Installations (ET Regulations)

• Electricity Safety, Quality and Continuity Regulations

• Electricity at Work Regulations 1989

• Health and Safety at Work etc. Act 1974

Which of the following is excluded from the scope of BS 7671?

• Equipment of aircraft

• Caravans

• Commercial premises

• Agricultural and horticultural premises

Which of the following is included in the scope of BS 7671?

• Lightning protection systems

• Equipment of motor vehicles

• Those aspects of mines and quarries covered by Statutory Regulations

• Photovoltaic systems

Which of the following would not necessarily need to be taken into consideration when additions or alterations are being made?

• The rating of any existing equipment.

• The condition of existing equipment.

• The existing earthing and bonding arrangements.

• The existing final circuits are protected by rewireable fuses.

Fault protection is defined as

• Protection against electric shock under fault-free conditions

• Protection against short circuit

• Protection against electric shock under single fault conditions

• Protection against overload

The definition 'An operation intended to remove, as quickly as possible, danger, which may have occurred unexpectedly' describes which of the following?

• Switching off for mechanical maintenance

• Emergency switching

• Emergency stopping

• Functional switching

Which of the following is not a characteristic that needs to be taken into account when choosing methods of protection for safety?

• Maintainability

• Continuity of service

• External influences

• Energy efficiency

In which of the following systems is the protective conductor separate from the neutral conductor inside the installation but combined on the supply side of the installation?

• TN-C-S

• IT

• TN-C

• TT

Which of the following items of information might need to be given to the distributor prior to receiving a connection?

• Maximum demand

• Nominal voltage

• Type and rating of the overcurrent devices at the origin

• External earth fault loop impedance

Which one of the following is not a reason given in BS 7671 for dividing circuits?

• To avoid hazards and minimise inconvenience

• To prevent the indirect energizing of a circuit intended to be isolated

• To facilitate safe inspection, testing and maintenance

• To enable functional switching