Understanding Earthing Arrangements

What is the primary purpose of an earthing electrode system?

• To provide a path for electrical current to flow into the ground

• To increase the voltage of an electrical system

• To reduce the resistance of electrical wires

• To store electrical energy

Which of the following is a common type of earthing arrangement?

• Series earthing

• Parallel earthing

• TN-S system

• Capacitive earthing

In a TT earthing system, what does the first 'T' stand for?

• Transformer

• Transient

• Terra (Earth)

• Terminal

Why is earthing important in electrical installations?

• To increase the efficiency of electrical appliances

• To prevent electrical shock and fire hazards

• To reduce the cost of electricity

• To enhance the aesthetic appearance of electrical systems

Which regulation governs earthing in electrical installations in Great Britain?

• The Building Regulations

• The Electricity at Work Regulations

• The Health and Safety at Work Act

• The Electrical Safety Standards

What is the main component of an earthing electrode system?

• Insulator

• Conductor

• Resistor

• Capacitor

Which of the following is NOT a type of earthing arrangement?

• TN-C-S system

• IT system

• TT system

• RT system

What is the role of a protective earth (PE) conductor in an electrical installation?

• To carry operational current

• To provide a return path for fault current

• To increase voltage levels

• To act as a backup power source

How does earthing help in the event of a lightning strike?

• It amplifies the lightning current

• It diverts the lightning current safely into the ground

• It stores the lightning energy

• It prevents lightning from occurring

What is the typical material used for earthing electrodes?

• Plastic

• Copper

• Wood

• Aluminium