Which article addresses the standards for recreational vehicles and their parks?

The correct response is based on the National Electrical Code (NEC) provisions concerning recreational vehicles (RVs) and RV parks. Article 551 specifically addresses the electrical requirements for recreational vehicles and the installations in RV parks. This includes guidelines for the safe installation and use of electrical wiring and equipment associated with recreational vehicles, ensuring that systems are both functional and comply with safety standards.

In contrast, the other articles cover different subject areas. Article 547 focuses on agricultural buildings, discussing the electrical needs associated with farming operations. Article 552 deals with floating buildings and marinas, which includes specific regulations for these types of electrical installations. Article 590 covers temporary installations, applicable to various setups but not specifically designed for the unique conditions of RV parks. Thus, Article 551 is the one that thoroughly aligns with the standards for recreational vehicles and their associated parks.