What is the main concern addressed in Article 110.25 regarding environmental factors?

The main concern addressed in Article 110.25 of the National Electrical Code (NEC) is the protection against moisture and dust. This section emphasizes that electrical equipment must be designed and installed to withstand potentially adverse environmental conditions, particularly moisture and dust, which can impair the operation of the equipment or create safety hazards.

The NEC sets these guidelines to ensure that electrical installations are safe and reliable, recognizing that moisture and dust can lead to corrosion, short circuits, and other failures that compromise system integrity. By focusing on the environmental suitability of the installation, code compliance helps prevent hazards such as electrical fires, equipment failure, and electrical shock, thus enhancing overall safety in the use of electrical systems.

While the other options address various aspects of electrical work, they do not relate to the specific requirements concerning environmental factors that Article 110.25 encapsulates.