Fusing and earthing

• What are the main components discussed in the study material regarding electrical safety?

  • Surge protectors
  • Circuit breakers
  • Double insulation
• What is a surge in electrical terms?

  A fault in the current application
• What do circuit breakers do?

  They break the circuit when current is too high
• What is the purpose of fuses in electrical circuits?

  To break the circuit when current is excessive
• How does double insulation work?

  It covers the appliance in non-conductive material
• Why is double insulation important for electrical appliances?

  It prevents electric shock by isolating current
• What is the risk of touching a live wire?

  You could receive a dangerous electric shock
• What does the term 'earthing' refer to in electrical safety?

  Using a wire to provide an alternate path
• What is the purpose of an earthing wire?

  To provide a safe path for excess current
• How does an earthing wire protect users?

  It directs excess current away from users
• What is a potential danger of using metal parts in electrical appliances?

  They can conduct electricity and cause shocks
• Why should exposed metal parts be avoided in electrical appliances?

  They pose a risk of electric shock to users
• What is the relationship between insulation and electrical safety?

  Insulation prevents accidental contact with current
• What is the role of plastic in electrical appliances?

  It acts as an insulator to prevent shocks
• How does insulation contribute to electrical safety?

  It prevents accidental contact with live wires
• What happens if an appliance is not properly insulated?

  It can lead to electric shocks or fires
• Why is it important to have circuit breakers in electrical systems?

  They protect against overloads and faults
• How do circuit breakers enhance electrical safety?

  They automatically disconnect power during faults
• What is the function of a fuse in an electrical circuit?

  To break the circuit when current is too high
• How does a fuse protect electrical appliances?

  It melts and breaks the circuit during overload
• What is the difference between a fuse and a circuit breaker?

  A fuse melts, while a breaker resets
• What is the purpose of using double insulation in appliances?

  To prevent electric shock by isolating current
• Why is it dangerous to touch a live wire?

  You could receive a severe electric shock
• How does earthing protect users from electric shock?

  It provides a safe path for excess current
• What is the risk associated with using metal parts in electrical appliances?

  They can conduct electricity and cause shocks
• How does insulation contribute to electrical safety?

  It prevents accidental contact with live wires
• What happens if an appliance is not properly insulated?

  It can lead to electric shocks or fires
• What is the significance of using non-conductive materials in appliances?

  They prevent electric shocks from occurring
• How do circuit breakers enhance electrical safety?

  They automatically disconnect power during faults
• What is the function of a fuse in an electrical circuit?

  To break the circuit when current is too high
• How does a fuse protect electrical appliances?

  It melts and breaks the circuit during overload
• What is the difference between a fuse and a circuit breaker?

  A fuse melts, while a breaker resets
• What is the purpose of using double insulation in appliances?

  To prevent electric shock by isolating current
• Why is it dangerous to touch a live wire?

  You could receive a severe electric shock
• How does earthing protect users from electric shock?

  It provides a safe path for excess current
• What is the risk associated with using metal parts in electrical appliances?

  They can conduct electricity and cause shocks
• How does insulation contribute to electrical safety?

  It prevents accidental contact with live wires
• What happens if an appliance is not properly insulated?

  It can lead to electric shocks or fires
• Why is it important to have circuit breakers in electrical systems?

  They protect against overloads and faults
• How do circuit breakers enhance electrical safety?

  They automatically disconnect power during faults