What does Article 230 require for service conductors entering a building?

Article 230 of the National Electrical Code (NEC) addresses service conductors and their requirements when entering a building. One of the primary concerns is ensuring that these conductors are adequately protected against physical damage. Service conductors are typically run in locations that can be exposed to various forms of impact or other hazards, such as accidental contact with tools, equipment, or vehicles.

The NEC mandates that service conductors should be protected to prevent any interruptions in the electrical service and potential hazards, such as electrical fires or shocks, that arise from damage to the conductors. Protective measures can include using conduit, raceways, or other suitable means of mechanical protection.

While the other choices present important considerations for electrical installations—such as concealment for safety, insulation from moisture, and the need for grounding—these are not the primary focus of Article 230 regarding service conductors entering a building. Ensuring they are safeguarded against physical damage takes precedence, making it the correct answer in this context.