What is the required arrangement of raceways that enclose service-entrance conductors to be suitable for wet locations?

The required arrangement of raceways that enclose service-entrance conductors to be suitable for wet locations is that they must be arranged to drain. This means that the raceways need to be designed in such a way that any moisture that accumulates inside them can exit freely, preventing the buildup of water which could lead to corrosion of conductors, insulation failure, or electrical hazards.

While sealing the raceways to prevent moisture ingress can protect against external moisture, it does not address the issue of water that may enter the raceway through other routes, such as condensation. Insulation against water exposure is a consideration but does not provide a solution for managing existing water within the raceway. Additionally, using non-corrosive materials for supports is important for durability and longevity but does not specifically address the moisture drainage needs of the raceway itself. Thus, ensuring that raceways are arranged to effectively drain is essential for compliance with wet location requirements and for maintaining safety in electrical installations.