What is the name of the sheet metal enclosure used for conductors, cables, and bus bars at various electrical points?

The correct term for the sheet metal enclosure that is used for conductors, cables, and bus bars at various electrical points is referred to as an auxiliary gutter. An auxiliary gutter is specifically designed to facilitate the safe and organized distribution of electrical conductors and cables, providing protection while allowing ease of access for maintenance and modifications.

Auxiliary gutters are integral in electrical systems as they help manage wiring in a way that minimizes risks associated with open wiring, thus ensuring compliance with safety standards. They also aid in efficient space utilization in buildings where multiple systems intersect or where there is a high density of electrical runs.

In comparison, the other options do not accurately describe this type of enclosure. A Johnson box typically refers to a type of junction box used in specific applications but does not encompass the scope of auxiliary gutters. The junction box itself is more commonly used to protect wire connections rather than house continuous runs of conductors and cables as an auxiliary gutter would. Curb and gutter systems are related to drainage and roadway infrastructure, and thus they do not pertain to electrical enclosures.