Understanding the Difference Between Plenum and Riser Data Cables
When it comes to data cables, there are two common types that you may come across: plenum cables and riser cables. While they may look similar on the outside, there are significant differences between the two that are important to understand, especially regarding safety and compliance with building codes.
Plenum cables are designed to be used in plenum spaces, which are the spaces above drop ceilings or below-raised floors used for air circulation in a building. These spaces are used for heating, ventilation, and air conditioning (HVAC) systems, and they can also act as pathways for the spread of fire and smoke.
Plenum cables are made with unique materials with low smoke and low flame characteristics. This means that in the event of a fire, plenum cables will produce less smoke and will not spread the fire as quickly as other lines. This is crucial for the safety of the building occupants and for preventing the spread of fire to other areas of the building.
Riser cables, on the other hand, are used in vertical applications, such as running cables between floors in a building. Riser cables are not designed to be used in plenum spaces because they do not have the same fire-resistant properties as plenum cables. Riser cables are made with materials that have higher flame and smoke characteristics, which means that they can contribute to the spread of fire and smoke in the event of a fire.
It is important to note that using the wrong type of cable in a plenum space can be a severe safety hazard and may also violate building codes. Building codes typically require plenum-rated lines in plenum spaces to ensure the safety of building occupants and to comply with fire safety regulations.
So, how can you tell the difference between plenum and riser cables? The easiest way is to look for the labeling on the cable jacket. Plenum cables are typically marked with the letters “CMP” (Communications Plenum) or “MP” (Plenum). Riser cables, on the other hand, are labeled with “CMR” (Communications Riser) or “CM” (Riser). These labels indicate that the cables have been tested and certified for specific applications.
When choosing between plenum and riser cables, it is essential to consider the specific requirements of your installation. If you run cables in plenum spaces, such as in office buildings or schools, plenum cables are the safest and most compliant option. However, if you are running cables in non-plenum areas, such as in residential facilities or outdoor installations, riser cables may be more appropriate.
In conclusion, understanding the difference between plenum and riser cables is crucial for ensuring the safety and compliance of your data cable installation. Plenum cables are designed for use in plenum spaces and have low smoke and flame characteristics. In contrast, riser cables are used in vertical applications and have higher flame and smoke characteristics. By choosing the right type of cable for your installation, you can ensure the safety of your building occupants and comply with building codes and fire safety regulations.
Progressive Office Cabling
Founded in 1986, Progressive Office’s success is a direct result of years of commitment to seeking cost-effective solutions. Progressive teams are committed to installing and operating your data cabling, access control, and telecom systems while minimizing disruption and downtime. Call our toll-free number (800) 614-4560 today.
