Equipotential Earthing Quiz

What is the main purpose of equipotential bonding?

• To increase electrical resistance

• To maintain various conductive parts at different potentials

• To maintain various conductive parts at the same potential

• To decrease electrical resistance

Which of the following is considered an exposed-conductive part?

• Steel conduit

• Wooden beam

• Plastic pipe

• Rubber mat

What is an extraneous-conductive part as defined by BS 7671:2018?

• A part that is always live

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

• A non-conductive part of the electrical installation

• A part that is insulated from the electrical system

What is the role of protective equipotential bonding?

• To increase the voltage in the system

• To ensure all parts are at different potentials

• To provide equipotential bonding for the purpose of safety

• To disconnect all parts from the system

Which of the following is a purpose of equipotential bonding?

• To increase electrical resistance

• To ensure all parts are at different potentials

• To maintain safety by keeping parts at the same potential

• To disconnect all parts from the system

Which of the following is NOT listed as a part to be connected to the main earthing terminal?

• Metallic water installation pipes

• Exposed metallic structural parts

• Plastic water installation pipes

• Central heating systems

What is the main purpose of supplementary equipotential bonding?

• To increase the current flow

• To reduce the potential difference between exposed-conductive-parts

• To enhance the aesthetic of installations

• To provide additional insulation

What is the purpose of supplementary equipotential bonding in electrical installations?

• To enhance the aesthetic appearance of installations

• To ensure safety by reducing potential differences

• To increase the electrical load capacity

• To improve energy efficiency

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

• To provide a connection to the earth

• To increase voltage levels

• To insulate electrical components

• To enhance signal strength

What is the main purpose of earthing and bonding in electrical installations?

• To ensure safety by preventing electric shock

• To increase the electrical load capacity

• To improve energy efficiency

• To enhance the aesthetic appearance