Fuses, Earthing and Circuit Breakers
 

Fuses, Earthing and Circuit Breakers problem 13


Which of the components below are designed to improve the safe working of a mains electrical supply?


  • circuit breaker

  • earth wire

  • fuse


  • I and II only

  • I and III only

  • II and III only

  • I, II and III


 

main author and content editor: Adebola Oluwadare