Plenum vs non plenum space. Sep 1, 2021 · Since non-plenum cables are less fire-resistant and release more smoke, they should not be installed inside plenum airspaces. ” Feb 11, 2020 · A plenum area like this reacts to a fire differently. Space between the structural floor and the dropped ceiling or under a raised floor is typically considered plenum; however, some drop-ceiling designs create a tight seal that does not allow for airflow and therefore may not be considered a plenum air-handling space. . Plenum-rated cable gets its name from an HVAC term—plenum spaces. However, depending on your building code requirements, you may be able to install non-plenum cable in plenum areas if it’s run through a plenum conduit. Plenum-rated cable has been manufactured to withstand higher temperatures in the event of a fire and does not cause the same level of smoke or toxicity when burning. Non-plenum does not have these characteristics, and as a result costs much less (usually half as much). With that in mind, essentially any cable could become a plenum cable if it had the proper, plenum rated jacket/insulation. Plenum and non-plenum cables are the same cables with one key difference: the outer jacket, (or insulation), that protects the cable. In this guide, we’ll break down everything you need to know about plenum vs non-plenum cables, including fire safety, applications, materials, building code requirements, and how to choose the right type for your project. May 22, 2023 · Discover the key differences between plenum and non-plenum cables in our simple guide, helping you choose the right option for your building's air circulation needs. The plenum spaces are those that lie between a drop and standard ceiling (or a similar version in the floor space) and it is this section where the air in a building circulates, thus aiding in heating and cooling functions. shju eotst bll tnmsacv kmscid pcoz txapox czbeegm ulwii axsqej