18th Edition Part 1 Mock 1

Who can carry out an initial verification of an installation?

• a)        An instructed person
• b)        A member of the public
• c)        The owner of the installation
• d)       A skilled competent person

What is the maximum d.c. circuit voltage covered by the regulations BS 7671?

• a) 230 V a.c.
• b) 1000 V a.c.
• c) 1500 V d.c.
• d) 1500 V a.c.

Which of these methods is not achieving fault protection? through a body, to a non-hazardous time period

• a)        Increasing the earth fault loop impedance to a high value
• b)        Preventing a current resulting from a fault passing through the body of any livestock
• c)         Limiting the duration of a current resulting from a fault, which can pass through a body, to a non-hazardous value
• d)        Limiting the magnitude of a current resulting from a fault, which can pass

What characteristic of the supply must be included in an electrical installation certificate?

• a)         Particular requirements of the distributor
• b)        Details of the client
• c)         The name and signature of the installer
• d)        The material of the main protective bonding conductors

Conductors shall be identified in accordance with?

• a)       Section 512
• b)        Section 513
• c)        Section 514
• d)       Section 515

BS 7671 may need to be supplemented by the requirements or recommendations of which other document when applied to electric surface heating systems?

• a) BS EN 60335-2-96
• b)        BS EN 12954
• c)             BS EN 13174
• d)        BS EN 13636

BS 7671 includes requirements for?

• a)        Electric fences installed on farm-land
• b)       Wiring systems and cables not specifically covered by the standards for appliances
• c)        Lift installations in office blocks
• d)        Wiring systems on military aircraft

BS 7671 is?

• a)        Non-statutory and cannot be used as evidence to show compliance in a court-of-law
• b)       Statutory and cannot be used as evidence to show compliance in a court-of-law
• c)        Non-statutory but can be used as evidence to claim compliance with a statutory requirement in a court-of-law
• d)       Statutory and can be used as evidence to show compliance in a court-of-law

Where new materials are invented for use within electrical installations are departures permitted from BS 7671?

• a)        No
• b)       Yes providing the resulting degree of safety of the installation is not less than that obtained by compliance with the regulation
• c)        Sometimes when the designer feels he likes the new materials
• d)       With supporting evidence that they are a lower standard than the regulations

Which characteristics of protective equipment is not required be determined with respect to their function including protection against the effects of?

• a)       Fault current
• b)       Overvoltage
• c)        No-voltage
• d)       Under-current