What is covered under NEC Article 250?

NEC Article 250 focuses specifically on grounding and bonding requirements for electrical installations. This article outlines the standards necessary to ensure that electrical systems are safely grounded and bonded to prevent electric shock hazards and ensure system functionality during fault conditions. Proper grounding and bonding are essential components in an electrical system, as they help to protect both people and property by providing a clear path for electrical faults to travel safely to the ground, thereby reducing the risk of electrical fires and shock.

In contrast, other options refer to areas not covered by Article 250. Ladder safety standards do not pertain to grounding or bonding, circuit breaker installations fall under different NEC articles, and standards for residential wiring encompass a broader scope than just grounding and bonding. Thus, the answer accurately identifies the specific focus of NEC Article 250 on grounding and bonding requirements.