Electrical Bonding Quiz

According to BS 7671:2018, what is the definition of 'equipotential bonding'?

• Electrical connection maintaining various exposed-conductive-parts and extraneous-conductive-parts at substantially the same potential.

• Electrical connection maintaining various insulated parts at different potentials.

• Electrical connection maintaining various non-conductive parts at the same potential.

• Electrical connection maintaining various conductive parts at different potentials.

What is the purpose of 'protective equipotential bonding'?

• Equipotential bonding for the purpose of safety.

• Equipotential bonding for the purpose of efficiency.

• Equipotential bonding for the purpose of aesthetics.

• Equipotential bonding for the purpose of cost reduction.

According to BS 7671:2018, what is an 'exposed-conductive-part'?

• A part of equipment that is always live.

• A part of equipment that is never live.

• A conductive part of equipment which can be touched and which is not normally live, but which can become live under fault conditions.

• A non-conductive part of equipment that is always live.

Which of the following is NOT included as an 'exposed-conductive-part' according to BS 7671:2018?

• Steel conduit

• Steel trunking

• Plastic enclosures

• Metallic equipment

Which standard further defines 'exposed-conductive-parts'?

• BS 7671:2018

• ISO 9001:2015

• IEC 60601-1

• ANSI/IEEE C62.41

According to BS 7671:2018, how are 'extraneous-conductive-parts' defined?

• A conductive part liable to introduce a potential, generally earth potential, and not forming part of the electrical installation.

• A non-conductive part that forms part of the electrical installation.

• A conductive part that is always at earth potential and forms part of the electrical installation.

• A non-conductive part that is not liable to introduce any potential.

According to BS 7671:2018 Regulation 411.3.1.2, which of the following should main protective bonding conductors connect to?

• Plastic installation pipes

• Wooden structural parts of the building

• Water installation pipes

• Non-conductive parts of the building

Which chapter of BS 7671:2018 should main protective bonding conductors comply with?

• Chapter 50

• Chapter 52

• Chapter 54

• Chapter 56

Which of the following is NOT listed as a part to which main protective bonding conductors should connect?

• Gas installation pipes

• Central heating and air conditioning systems

• Exposed metallic structural parts of the building

• Wooden beams

What is the main purpose of equipotential bonding in electrical systems?

• To increase the voltage

• To ensure all conductive parts are at the same potential

• To decrease the current

• To isolate different parts of the system