Final answer:
During an inspection, the service panel cover needs to be removed to determine the type of branch circuit wiring. This wiring includes the live/hot, neutral, and earth/ground wires. Proper grounding is important for electrical safety, preventing electric shock and ensuring appliances operate safely.
Step-by-step explanation:
Definition of circuit breaker:
A circuit breaker is a device that interrupts excessive currents to prevent thermal hazards. It is in series on the live/hot wire and functions by tripping when the current exceeds a specific limit. Circuit breakers are used in electrical systems to protect appliances and prevent electrical fires.
Reason for removing the service panel cover:
During an inspection, an inspector needs to remove the service panel cover to determine the type of branch circuit wiring. This wiring includes the live/hot, neutral, and earth/ground wires and their connection to the circuit breaker and appliances. By closely examining the wiring, the inspector can identify any potential safety hazards, such as worn insulation or improper grounding.
Importance of proper grounding:
Grounding is essential for the safety of electrical systems. It ensures that the case of an appliance remains at zero volts, preventing electric shock. Without proper grounding, a broken ground connection can lead to severe electric shock and the possibility of the appliance operating normally, creating a dangerous situation. Hence, inspectors need to determine the type of branch circuit wiring to ascertain the proper functioning and safety of the electrical system.