How do articles like Article 210 and Article 220 in the NEC contribute to electrical safety?

Article 210 and Article 220 of the National Electrical Code (NEC) significantly enhance electrical safety by establishing methods for calculating electrical loads. Proper load calculation is crucial as it helps determine the appropriate wire sizes, circuit configurations, and the overall capacity of electrical systems to handle the expected load.

By specifying how to accurately assess and calculate the electrical loads, these articles ensure that electrical installations are designed to operate safely under normal conditions without overheating or causing undue stress on the system. This prevents potential hazards such as fires or equipment failures that can arise from overloaded circuits.

In contrast, the other options focus on aspects that, while relevant to electrical installations, do not directly relate to the core function of ensuring the safety of electrical systems through systematic load calculations. Hence, the emphasis on proper load calculations reinforces the foundation of electrical safety as dictated by the NEC.