What does NEC Article 300 recommend about labeling electrical panels?

NEC Article 300 emphasizes the importance of clear and legible labeling for electrical panels to ensure safety and proper identification of circuits. Labels that are easy to read help electricians and maintenance personnel quickly identify the function of each circuit, which is crucial during troubleshooting or maintenance procedures. Clear labels also aid in preventing accidents, as they provide immediate information about the electrical system, reducing the likelihood of confusion.

While various aspects of labeling might be discussed in different sections of the NEC, the focus on clarity and legibility is key to promoting safety and efficiency in electrical work. The other options do not align with these standards; for example, calling labels optional would compromise safety by leaving essential information unspecified. Additionally, allowing labels in any language may not ensure universal understanding among all personnel, particularly in diverse workplaces. Lastly, while handwritten labels can be acceptable under certain circumstances, they must still adhere to the requirement of being clear and legible; therefore, allowing them without this stipulation might lead to misunderstanding or misinterpretation.