Which statement about grounding and insulation is correct for this scenario?

Which statement about grounding and insulation is correct for this scenario?

• A. The grounded conductor of a multiconductor cable must be insulated or covered
• B. The equipment grounding conductor must be insulated or covered
• C. The hot conductors must be insulated or covered
• D. All conductors must be coated for weather resistance

Answer: (A)

The main idea here is that in a multiconductor cable, the grounded conductor (the neutral) must be insulated or covered to prevent accidental contact with other conductors or conductive surfaces. Since the grounded conductor carries current as part of the return path, exposing it could lead to shock hazards or unintended energizing of metal parts if it touches a grounded or live surface. Insulation helps clearly identify the neutral, maintains proper isolation, and reduces the risk of short circuits or electric shock. The equipment grounding conductor, while essential for safety, is often allowed to be bare in many installations because its role is to provide a low-impedance path to earth for fault currents, not to carry normal operating current. Hot conductors generally require insulation to prevent contact and to contain the current. Weatherproof coating isn’t universally required for every conductor, as protection needs vary by location and conditions. So, the statement that the grounded conductor of a multiconductor cable must be insulated or covered is the best choice because it directly addresses safe identification and containment of the return path in a typical cable assembly.

The main idea here is that in a multiconductor cable, the grounded conductor (the neutral) must be insulated or covered to prevent accidental contact with other conductors or conductive surfaces. Since the grounded conductor carries current as part of the return path, exposing it could lead to shock hazards or unintended energizing of metal parts if it touches a grounded or live surface. Insulation helps clearly identify the neutral, maintains proper isolation, and reduces the risk of short circuits or electric shock.

The equipment grounding conductor, while essential for safety, is often allowed to be bare in many installations because its role is to provide a low-impedance path to earth for fault currents, not to carry normal operating current. Hot conductors generally require insulation to prevent contact and to contain the current. Weatherproof coating isn’t universally required for every conductor, as protection needs vary by location and conditions.

So, the statement that the grounded conductor of a multiconductor cable must be insulated or covered is the best choice because it directly addresses safe identification and containment of the return path in a typical cable assembly.