Final answer:
The question involves electrical grounding and safety in relation to the connection of a grounded conductor on the load side of a separately derived system. Grounding provides a safety feature by fixing a conductor at zero volts, protecting against shocks and equipment damage.
Step-by-step explanation:
The question refers to the practices of electrical grounding and safety regarding the proper connection and disconnection of a conducting material to various parts of an appliance. In accordance with electrical safety standards, the grounded conductor should not be connected to the normally noncurrent-carrying metal parts of equipment on the load side of the system bonding jumper within a separately derived system, unless exceptions specified in National Electrical Code (NEC) Article 250 are applicable. A grounded conductor is intended to carry fault current in the case of an electrical fault, thus protecting against electric shock and equipment damage.
For instance, the grounding is demonstrated in scenarios where worn insulation allows the live/hot wire to come into direct contact with the metal casing of an appliance. If the ground connection is intact, any fault current will cause the circuit breaker to trip, prompting the necessary repairs to the appliance and averting potential electric shock to individuals handling the equipment.
It is crucial to recognize the importance of proper grounding: by connecting the conductor to the earth, a zero-volt fixed point is created, which is a crucial safety feature designed to protect against electrical hazards. In the absence of a proper ground connection, a person touching the appliance may be subjected to a severe electrical shock, especially if they are an effective conductor—like when wet.