Which of the following articles is not related to recreational facilities or equipment?

Article 605 of the National Electrical Code (NEC) specifically addresses the installation requirements for general wiring methods and does not pertain to recreational facilities or equipment. It focuses on the general principles and regulations governing the wiring of electrical installations, including conductors, raceways, and other components essential for safe electrical distribution.

In contrast, Articles 551, 552, and 610 are directly related to various aspects of recreational facilities and their equipment. For example, Article 551 covers recreational vehicle parks, while Article 552 deals with the wiring requirements and safety provisions for park trailers and recreational vehicles. Article 610 addresses the requirements specific to electric signs and outline lighting, which can often be found at recreational facilities. Thus, these articles share a common theme regarding recreational environments and equipment, differentiating them from Article 605.