The AC rating levels are designated AC1 through AC5. Each is represented by international pictographs reflecting the product’s application and durability. The primary application is divided into two groups: residential and commercial. Each group is further divided into traffic intensity levels: moderate, general, or heavy.The residential rating is designated by a pictograph of a house and the commercial rating by a building. To the right of those is a pictograph of one, two, or three people corresponding to the traffic intensity levels. Below the person or people is a numerical equivalent of the pictographs. The first digit indicates the primary application: 2 for residential, 3 for commercial. The second digit indicates the traffic intensity level: 1 for moderate, 2 for general, 3 for heavy.The following is a breakdown of the AC ratings, their associated symbols and some suitable uses: ... [Read more...]