In a controls cabinet the conductors are passed through channels or bundled. When dissimilar conductors are run side-by-side problems can arise. The basic categories of conductors are shown in See Wire and Cable Categories. In general category 1 conductors should not be grouped with other conductor categories. Care should be used when running category 2 and 3 conductors together.

Wire and Cable Categories

· Types of wire pathways - channels - raceways/trays - conduit

· Conductor types enter and exit the controls cabinet separately

· When conductors mst be near incompatible types, they should cross at right angles