WorksheetsElectrical Bonding Quiz
Total questions: 24
Worksheet time: 12mins
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
Which of the following is NOT typically connected in an equipotential bonding system?
Structural steelwork
Oil pipes
Water pipes
Plastic pipes
What is the role of the main earth terminal in an equipotential bonding system?
To provide a connection point for the main power supply
To serve as the central point for all bonding conductors
To isolate the system from the ground
To increase the system's resistance
Which of the following is a common material used for equipotential bonding conductors?
Plastic
Copper
Wood
Rubber
What is the purpose of supplementary equipotential bonding according to the IET ON-Site Guide?
To increase the voltage between various conductive parts
To reduce the voltage between various exposed-conductive-parts and extraneous-conductive-parts during a fault to earth
To eliminate the voltage between various conductive parts
To maintain the voltage between various conductive parts
According to BS 7671:2018, which of the following does NOT require supplementary equipotential bonding if the installation meets the requirements for earthing and bonding?
Kitchen pipes, sinks or draining boards
Metallic boiler pipework
Metal furniture in kitchens
Wooden furniture in kitchens
What is the standard mentioned for earthing and bonding requirements in the document?
BS 7671:2018
BS 7671:2015
BS 7671:2020
BS 7671:2010
Which of the following locations does NOT require supplementary equipotential bonding if the requirements of 701.415.2 are met?
Locations containing a bath or shower
Kitchen pipes, sinks or draining boards
Metallic boiler pipework
Metal furniture in kitchens
Which of the following is an important component part relating to the automatic disconnection of supply?
cpc
main protective bonding conductor
supplementary equipotential bonding conductor
All of the above
What does "cpc" stand for in the context of equipotential bonding?
Current protective conductor
Circuit protective conductor
Conductor protective circuit
Circuit power conductor
Which of the following is NOT listed as an important component part for automatic disconnection of supply?
Earthing conductor
Protective devices
Earth electrode
Insulation tape
What is the purpose of equipotential bonding in electrical systems?
To increase the voltage in the system
To ensure all conductive parts are at the same potential
To decrease the current in the system
To isolate different parts of the system
Which component is connected to the earth electrode in the equipotential bonding diagram?
Neutral
Line
Earthing conductor
Protective devices
What is the role of the main protective bonding conductor in the equipotential bonding system?
To connect the supply transformer to the line
To connect the main earth terminal to the gas and water pipes
To connect the neutral to the star point
To connect the protective devices to the line
In the equipotential bonding diagram, what does CPC stand for?
Circuit Protective Conductor
Current Protective Conductor
Circuit Power Conductor
Current Power Conductor
