Electrical Safety and Bonding Quiz

What is the main purpose of equipotential bonding according to BS 7671:2018?

• To increase electrical resistance

• To maintain various exposed-conductive-parts and extraneous-conductive-parts at substantially the same potential

• To disconnect all electrical supplies

• To reduce the voltage to zero

Which of the following is considered an exposed conductive part?

• Steel conduit

• Wooden beam

• Plastic pipe

• Rubber insulation

What is the definition of 'Protective equipotential bonding'?

• Bonding for aesthetic purposes

• Equipotential bonding for the purpose of safety

• Bonding to increase voltage

• Equipotential bonding to reduce current

What is the purpose of equipotential bonding in electrical installations?

• To increase the voltage between conductive parts

• To reduce the voltage between conductive parts

• To disconnect the supply permanently

• To increase the current flow

If the required disconnection time cannot be achieved, what should be applied?

• Main protective bonding

• Supplementary bonding

• Increased voltage

• Decreased current

Which regulation provides guidance on supplementary bonding if disconnection time cannot be achieved?

• Regulation 411.3.1.2

• Regulation 415.2

• Regulation 544.2.1

• Regulation 419.2

What does CPC stand for in electrical installations?

• Circuit Protective Conductor

• Current Power Conductor

• Central Power Circuit

• Circuit Power Conductor

Which protective device is used for automatic disconnection of supply?

• Light switch

• Circuit breaker

• Dimmer switch

• Thermostat

Which of the following is a location where supplementary equipotential bonding is not required if BS 7671:2018 is met?

• Locations containing a bath

• Kitchens

• Living rooms

• Garages

What is the function of an earth electrode in an electrical installation?

• To provide lighting

• To connect to the earth

• To supply water

• To heat the building