What does Article 110.39 specify about labeling conducted installations?

Article 110.39 emphasizes the importance of clarity and understanding in labeling conducted installations to ensure safety information is effectively communicated. This requirement acknowledges that labels serve as critical tools for identifying potential hazards and instructions related to the electrical installations, helping to prevent accidents and ensuring compliance with safety standards.

Using clear and understandable labels helps not only those who installed the equipment but also anyone who may interact with the electrical systems in the future, including maintenance personnel and emergency responders. This clarity is vital for safe operation and maintenance and ensures that users can respond appropriately in case of an emergency.

Other options do not align with the NEC's standards for safety communication. Decorative labels can distract from crucial safety information, while small or poorly positioned labels may not be easily visible or legible. Additionally, suggesting that labels are optional undermines the necessity for clear identification of electrical installations, which is fundamental to ensuring safety in electrical work.