What type of boxes are required for wet locations according to Article 314?

In wet locations, electrical boxes must meet specific requirements to ensure safety and compliance with the NEC. The correct choice highlights that weatherproof boxes or enclosures rated for wet locations are essential. These boxes are designed to prevent the ingress of water, which could create hazardous conditions such as short circuits or electrical shocks.

Weatherproof boxes are specifically constructed using materials and seals that withstand exposure to moisture and harsh environmental conditions, making them suitable for outdoor installations or areas prone to wetness. They provide the necessary protection not only for the electrical components housed within but also for the safety of individuals using the electrical system.

Other types of boxes, while potentially useful in dry or non-wet environments, do not offer the same level of protection against moisture. For example, standard plastic boxes might deteriorate or become liability in wet conditions, and metal boxes, even when coated, may not adequately protect against water ingress. Wooden boxes, although treated for moisture resistance, are not suitable for electrical installations in wet locations due to the potential for decay and electrical hazards.

Thus, the requirement for weatherproof boxes or enclosures rated for wet locations is based on safety standards aimed at preventing electrical failures and ensuring user safety in environments where moisture is a factor.