plenum vs non plenum ceiling An extension cord laying over a drop tile may never have an issue, but it could happen. That air goes from your furnace or air conditioner to the air handler. 03 in. It's stiff, it hates turning corners, it usually requires more feed-points for longer runs, its outer jacket cracks easier if you bend it too far. 5 Pa), 4. Plenum-rated cable has special insulation that has low smoke and low flame characteristics. I've installed receptacles for security transformers above ceilings before. It also references, “the space over a hung ceiling used for environmental air-handling purposes,” and, “areas beneath raised floors for information …. Plenum vs Non Plenum PVC Network Ethernet Cables. W x 20 in. Non-plenum does not have these characteristics, and as a result costs much less (usually half as much). Ceiling - Ventilation Plenum. Plenum cable is mandated to be installed in any “air handling” space For example, most large office buildings use the ceiling to return air to the AC unit. The term plenum, could be a large section of ductwork, or the upper space above a ceiling. . What is plenum vs non plenum? Plenum-rated cable has been manufactured to withstand higher temperatures in the event of a fire and does not cause the same … Typically, one will see OFxR on the riser cable (you can remember R for “riser”) or OFxP (remember P for “plenum”. Plenum-rated cable gets its name from an HVAC term—plenum spaces. The plenum is the space that can … Always a breeze working with Laqfoil. Is a drop ceiling a plenum? Space between the structural ceiling 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 . Return Duct Entry To Plenum Hvac R Engineering Eng Tips. 5. Non-plenum does not have these . 1 4 Sponsored by LocalClarity The new … The cost of plenum cables is typically higher than the cost of riser cables. In some cases, the smaller diffusers require a higher air volume per minute than the bigger ones. OFNP – Optical Fiber Non-conductive Plenum. Plenum Cabling False ceilings are not considered plenums. Tweet Pin It. D x 46. ” It also … biggest difference is fire rating, plenum is meant for walls and celings above a drop ceiling plus plenum is a lot more expensive, Make your patch cables out of non … Plenum ceilings use the area between the dropped ceiling and the floor slab above as a return air path, but when these dropped ceilings are removed, the plenum area is reduced and can restrict the flow of return air. A plenum cable is a cable that is used in a plenum space. A plenum space is a compartment or chamber in a building that circulates conditioned air for heating or cooling purposes. The external insulating jacket of plenum cabling is usually a … Plenum ceilings use the area between the dropped ceiling and the floor slab above as a return air path, but when these dropped ceilings are removed, the plenum area is reduced and can restrict the flow of return air. Plenum cabling is often made of Teflon and is more expensive than ordinary cabling. (12. This section shall not apply to smoke detectors. H. A plenum chamber often refers to the space between a dropped ceiling and the structural ceiling, or a raised floor and the hard floor. It's just ass. Energy cost savings are significant for suspended ceilings. In case of a fire, plenum cables are slower to burn. The entry goes on to explain that a non-plenum airspace contains air that doesn’t move, as opposed to circulating air in a plenum airspace. Usually, the larger the box size, the greater the air flow rate; however, this is not necessarily true. Plenum vs. Non-Plenum Cable: Which One Should You Use? — IT Solutions, Managed Services, Structured Cabling — Telcion Skip to Content Structured Cabling cable copper cable plenum vs- non-plenum structured cabling You can if its a non plenum rated ceiling apparently. non-plenum ceilings – A plenum ceiling uses its cavity as the return-air vent instead of duct. Therefore, the ceiling can be referred to as a plenum ceiling because all cables that go through it have to be plenum rated. Later cars with a plenum chamber had a grille, which was the opening to the chamber. Chris The way I read 300. 8 in the 2008 NEC. 1. Maunder out just depends on the Sent from my Droid using Electrician Talk See article 400. The difference between plenum cable and other cables are the jacket material. Your HVAC system creates cool or warm air depending on the season. They are far less expensive than plenum cables. Plenum-rated cables, also known as CMP (Communications … Ventilating or ventilation (the "V" in HVAC) is the process of exchanging or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, carbon dioxide, and other gases. Ethernet link which has a riser-evaluated coat is called riser link. This option can decrease the cost of the ceiling, allow … in the ceiling of your project and decide if plumbing noise might be a consideration. 75 per foot. The terms “suspended ceiling” and “plenum” are widely used in the CE Code, but these two terms are not identical. We deal in several coaxial and twisted pair cables, ensuring that our lines meet all safety standards. A plenum-rated cable is coated in flame retardant material. and ceiling return air grilles can be selected to have a pressure drop of only about 0. These ceilings require “plenum-rated cabling,” which burns slower if exposed to fire or extreme heat, thereby emitting lower amounts of chemicals. w. This is one of the design reasons why a stretch ceiling may be installed with a larger non-plenum airspace. 02 in. We launched a new Q&A series answering customer questions so . A drop ceiling is just a ceiling below the architectural (or existing) ceiling. (7. However, the study found, suspended ceilings saved as much as 10. This is particularly true of 5-over-1 designs, where five wood-framed floors sit on top of a concrete podium, used for residential amenities or retail space. Combustible materials fully enclosed within one of the following: 5. Fire compartmentation to stop the flames or hot gases from physically passing from the fire side to the non-fire side through holes, gaps, cracks or any other types of . This was last updated in July 2021 Continue Reading About plenum A plenum is part of a building that is used to circulate air, usually for heating, air-conditioning, and ventilation. A plenum space is a part of a building that can facilitate air circulation for heating and air conditioning systems, by providing pathways for either heated/conditioned or return airflows, usually at greater than atmospheric pressure. 7% to 22% more to construct than open plenum ceilings, and 4. 25 – $0. COMBUSTIBLE . Provide a partial door above the return (or a solid door on the side wall) for AHU access. When To Use Plenum Cables Vs Riser Non Scheme Of Ceiling Plenum And Cable Scientific Diagram Plenum Es Safety Sealing And Sound Considerations 2021 04 06 Engineered Systems Magazine Safety First Know Your Cable Jacket Ratings . Plenum cabling is less flexible and costlier than polyvinyl chloride (PVC) cabling. Ceiling load is a negative load to plenum because it is leaving the plenum. However, total energy savings for lay-in ceilings vs. Using the wrong cable type can result in legal issues if a fire were to break out. With this, toxicity rate is lower than non-plenum cables. The NEC and the NFPA offer the same definition of a plenum. Article 100 of the NEC provides the same definition for plenum as that found in NFPA 90A. When building a copper cabling system for office or home, one constant that seems to be always taken into consideration is plenum cable vs non-plenum cable, which one does the project actually need? Plenum and non-plenum refer to the jacket that surrounds the cable, which is defined by NEC (National Electric Code) aiming at preventing the fire . Finally, a plenum is defined in NFPA 90A as a compartment or chamber to which one or more air ducts are connected that form part of the air distribution system. What is plenum vs non-plenum? Plenum-rated cable has been manufactured to withstand higher temperatures in the event of a fire . For instance, deep openings and channels starting with one story then onto the next floor are all riser. Duct coverings, linings, tape and connectors shall conform to Sections 603 and 604. Drop c. Plenum ceilings require cables that are approved for … Riser Cable: The fundamental contrast among plenum and riser is that riser is upward space between one story of a structure to another. This is an animated lesson discussing the difference between unshielded twisted pair PVC rated cables, such as plenum (cmp), riser (cmr) and cm Ethernet cables. ”. Non-plenum, often called riser cables are less expensive … Ford Falcon Fairmont Ghia XD XE XF ZJ ZK ZL Plenum & A pillar cut $450 Westlake, QLD Ford Falcon Fairmont Ghia XD XE XF ZJ ZK ZL Plenum & A pillar cut. Further, you cannot use a riser-rated line at plenum spaces. Air Handling Space The industry wide confusion regarding the definition of a plenum space verses an air handling space is very common as the area above a drop ceiling is mistakenly referred to as a plenum. For this reason, many contractors and installers choose to keep only plenum cable on hand to reduce storage requirements and streamline inventory. Plenum cables have a higher fire rating and are built with a low-smoke PVC or a fluorinated ethylene polymer fire-retardant plastic jacket (FEP). 0 similar questions has been found . If you are looking for plenum cables, feel free to call us. How is plenum rated cable determined? Plenum cables are run in that space (the plenum) to minimize the hazard from burning cables in a fire. 22 (C) (3) is that only the non-metallic boxes need to be rated and any metallic box is fine. Where did the word plenum come from? stated, the NEC defines a plenum area as, “a compartment or chamber to which one or more air ducts are connected and that forms part of the air distribution system. Plenum cables are more expensive because they are fire–resistant and have additional shielding, which increases their cost. Plenum is a term used by contractors, engineers, and HVAC technicians and is defined as a space used for air/ heating ventilation and circulation – think air ducts in a … Plenum rated cable gives off no toxic fumes when burned. The plenum spaces are those that lie between a drop and standard ceiling (or a similar version in the floor … Simply stated, the NEC defines a plenum area as, “a compartment or chamber to which one or more air ducts are connected and that forms part of the air distribution system. Plenum cables have specially treated jackets to inhibit flame progression and eliminate the harmful smoke normally released by burning plastic. Plenums are part of an HVAC system, often including open spaces above ceilings or … A lot of times when conduit is not installed, plenum cable is required because the cable is “freely installed” Non-Plenum Cable Non-plenum cableor “polyvinyl chloride” cable is often less much less … Plenum wrap’s 1-2 hour fire rating is necessary for specific applications, like Type 1 Noncombustible Building Designs, which strictly require noncombustible materials, or for applications where the insulation is likely to be … The MG2S's efficient technology allows for vertical or horizontal direct venting using approved non-metallic components for application flexibility. A plenum is widely accepted as the area where air return for an air conditioning system takes place. It is important to determine if a project does, in fact, require a plenum cable because it can save both the contractor and company money on … Chris I agree that 725. However, if there is a duct connected to the vent for return air, as in the picture on right, it is a nonplenum space. Residential air ducts are … The plenum chamber is a chamber located in front of the windshield, where air pressure is above atmospheric. 3% for the office design and 12. It’s easy to see why restricting production of flames, smoke and toxic gas is important in those areas. The quality of large size printed canvas is outstanding and the membrane used for stretch ceilings technology is versatile in color,texture and … Plenum rated cable is coated with a jacket that is low smoke/fire resistant. Product Includes (1) Revolv MG2S - 45k BTU - Two-Stage Gas Furnace - Manufactured Home - 96% AFUE - Front Return - Includes Coil Cabinet ( MG2S-045F) Plenums can be considered part of your ductwork. These wires are not as prevalent against heat, so they can NOT be used in place of plenum cables. This design is especially vulnerable to damaging and fast-spreading fires due to a lack of compartmentalisation, particularly in the construction stage. 05 in. A plenum cable can be used in a riser space, but a riser cable generally cannot be used in a plenum space. The fundamental contrast among plenum and riser is that riser is upward space between one story of a structure to another. A ceiling that uses the space above the tiles as the return plenum is usually referred to as a plenum ceiling. In most buildings, the space above the ceiling or below a raised floor is used for HVAC air. What is a plenum return ceiling? Where the return plenum is formed by open framing and a plywood platform, install and seal an air barrier (drywall or duct board) to separate the return from adjacent wall cavities. c. If necessary, extend the platform to form a door sill. Oct 2, 2006. ) Typically the ‘x’ will be a N for fiber optic cable you purchase which means that we have: OFNR – Optical Fiber Non-conductive Riser. 5% reduction in energy to earn 1 point, 14% reduction . Non-Plenum Cable: Which One Should You Use? — IT Solutions, Managed Services, Structured Cabling — Telcion Skip to Content Structured … In a plenum ceiling the air returns are not sealed. Research conducted by Rockfon and NGC Testing Services 1 shows that a lightweight plenum barrier made of stone wool insulation or gypsum board positioned vertically above the wall, blocking the plenum, can provide an STC/CAC 50 level of blocking when combined with a stone wool ceiling system. A non-plenum airspace can … Third, it makes an excellent hiding place. First, the building can be controlled to be pressurized to about 0. By By Sam Oches, Editorial Intern | August 11, 2010 This article first appeared in the 200809 issue of BD+C. They serve as the piece that connects your ductwork to your central HVAC system. It’s all in the jacket — the outer sheath that protects the cable’s core. Constructed of 26 gauge sheet metal, the knock-down design of the plenum takes up very little space and simplifies transporting to the job site. In either case, these terms relate to fire safety requirements. 1, 2, 3 and 4-sided ducts allowing for passage of air. Follow me on … Most plenum boxes have a built-in opposed blade damper to regulate airflow. 5 and 3 times more expensive than non-plenum rated cable. PowerCert Animated Videos 1. Electrical and telephone wiring, Ethernet cable, HVAC ducts and plumbing can all reside in a non-plenum airspace, eliminating messy visual distractions and creating a clean flawless finish. On the supply side of the air handler, the plenum takes the newly warmed or cooled air and leads it into . If the the returns are ducted back,then not a plenum. A building’s communication, data, and other network cables are usually placed in this space. The physical differences between plenum and non-plenum cable are straightforward. What is the advantage of plenum cable? What is plenum vs non-plenum? 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. It also will prevent the fire from growing bigger and causing more damage and danger. According to Article 100 of the NEC, a plenum is a “compartment or chamber to which one or more air ducts are connected, and that forms part of the air distribution system. 3. This section requires the use of metal boxes or non-metallic boxes that are listed for use in a plenum. Too much airflow will generate unwanted noise, too little airflow will not be able to provide sufficient cooling. Nobody likes it. Non-plenum cables are polymers of organic compounds called polyvinyl chloride"PVC". Look at the return air grills. This section shall not apply to materials exposed within plenums in one- and two-family dwellings. Plenum areas can be in drop ceilings or raised floors of buildings. What is the difference between plenum and non-plenum? Thus, fire and building safety codes mandate plenum-rated cables be used in plenum spaces and air ducts. Non-plenum cables are often made of polyvinyl chloride, or PVC, and if they catch fire produce toxic smoke. It is intended for use in ceilings or below floors where there is an open space such as above drop-top ceilings or acoustic tiles and below raised floors computer room floors. 5 in. They can also be used in non-plenum areas. All suspended ceilings are not plenums; some may use HVAC ductwork to move air to returns and diffusers located in the ceiling tiles (a ‘dead’ ceiling). The ceiling load is a net zero load to the coil. Rick. vs. It is commonly found in the space between the structural ceiling and a drop-down ceiling or … The biggest difference between the plenum and non-plenum cables is cost. Definition of Plenum in Construction. What is plenum vs non plenum? 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. It provides a volume of air which is drawn into the car from the chamber through the heater, air-conditioner or vents. But then again, when you factor in not having to install conduit, it's much less. 3% a year in energy costs in the prototype office building, and as much as 17% a … Plenum, (pronounced PLEH-nuhm), is a separate space in a building, typically between the building’s roof and a drop-down ceiling, that is primarily set aside for air … Plenum vs. 21M subscribers Join Subscribe 3K Share 81K views 2 years ago Networking Animated Videos This is. The elongated shape of the plenum ensures a permanent connection between the duct and the box. A plenum chamber is an enclosed space inside a building or other structure, used for airflow. A Plenum is specifically for Air flow (Think HVAC). Features of Plenum Cable Plenum is a term used by contractors, engineers, and HVAC technicians and is defined as a space used for air/ heating ventilation and circulation – think air ducts in a drop ceiling. ” The terms “suspended ceiling” and “plenum” are widely used in the CE Code, but these two terms are not identical. An example would be a metal air duct or a space between two floors that an air conditioning system blows directly into. If there is no sheet metal duct; just the open ceiling or wall space, then you are required by law to use Plenum Rated cable. “Riser” and “plenum” refer to both cable ratings and locations. On the other hand, Cat6 plenum cable uses very good quality PVC which produces low-smoke, has great electrical properties and chemical resistant … When To Use Plenum Cables Vs Riser Non Scheme Of Ceiling Plenum And Cable Scientific Diagram Plenum Es Safety Sealing And Sound Considerations 2021 04 06 Engineered Systems Magazine Safety First Know Your Cable Jacket Ratings . Both twisted pair and coaxial cable are made in plenum cable versions. 1% to 10. (5 Pa). 6% more in the prototype food store. … What is a non-plenum ceiling? Typically, spaces between the structural floor or a dropped ceiling are considered plenum. Plenum —As indicated by their name, these cables are intended for use in air. Plenum cables are usually made with Teflon insulation. The MG2S's efficient technology allows for vertical or horizontal direct venting using approved non-metallic components for application flexibility. com we are answering common questions we get asked. If the ceiling space is used for air handling, it is a plenum space. 1, 2 and 3-sided air-tight ceiling system allowing for passage of air. Emt installed in the plenum with non plenum rated conductors inside would be a seperate issue. Plenum and non-plenum cables can be any type of cable – coaxial, Ethernet, HDMI, fiber optic, etc. Temperature-tolerant products, like plenum-rated cable, reduce the need for costly … An above-ceiling location is ordinarily best for ductwork, which is often too large and bulky to fit above or within the structural floor, The wiring and ductwork must share the above- ceiling plenum space … Plenums are found in high-rise condos, stud bays sometimes do double-duty as air returns, and even the failure of ductwork can unintentionally “create” a plenum where none was planned. The space is often between the structural ceiling and a drop-down ceiling. open plenums were … There are a few concepts associated with the ceiling load. Years ago, we used … A plenum is a horizontal space within a building that houses building components and allows the movement of air. . Plenum vs Non Plenum (Riser) Cables Plenum Cable or CMP Plenum Cable (CMP) is cable that is laid in the plenum spaces of buildings. So why not err on the side of caution and always opt for plenum-related cables when running them in a ceiling? Price. Plenum cables generally cost around $1. Plenum-rated cables come at a higher price because they must meet the required standards. Product Includes (1) Revolv MG2S - 45k BTU - Two-Stage Gas Furnace - Manufactured Home - 96% AFUE - Front Return - Includes Coil Cabinet ( MG2S-045F) For instance, large buildings use the ceiling to return air to the AC unit. In commercial buildings the space above the ceiling, in walls and below floors is often used to carry return air as part of the heating and air conditioning systems or the air … You may come across varieties for plenum and non-plenum cables such as bulk PVC cables, cat5 ethernet cables or Cat6 plenum bulk cables. …. The wiring methods for such other PVC rated CABLES Plenum vs Non Plenum PVC Network Ethernet Cables. King Electric What Is A Plenum Available Options To Heat E. What is a Plenum Rated Cable? 20. What Is Plenum? In a building, a plenum is a separate space used for air circulation for heating, ventilation, and air-conditioning. 00 – $2. But if you specified plenum cable in the bid,and multiple contractors bid it that way,it should be required. and is designed for use with all forced-air heating and cooling applications. A plenum-rated cable … What is Plenum Cable?Here at CableWholesale. 5 The study found initial construction costs for suspended ceilings to be 15-22% higher in offices, and 4-11% higher in retail spaces. Open spaces will require painting and be periodically repainted. Sometimes, plenum also refers to the space under a raised floor. As a result, the cost of plenum cables is higher than non-plenum cables. … The semi-rigid duct system based on EPP plenum boxes achieves airtightness class C. Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window) Related. Non-plenum cables can be regarded as general purpose cables. There are many design Issues to recommend an open ceiling, not the least being that they increase the ceiling height, thereby the amount of usable space in a store. Plenum Space vs. A plenum cannot be used as an occupied space or for storage of any materials. It is kept in a separate part of the building, typically between a structural and drop-down ceiling, though it can also be found in … Plenum cable is designed to minimize burning and toxic fumes. It seriously sucks. However it is much more costly than regular PVC cable. Chief Plenum Rated Ceiling Enclosure Storage Box Cms492 B H 2. Before buying a cable, it is better to consider when and . Simply stated, the NEC defines a plenum area as, “a compartment or chamber to which one or more air ducts are Finally, a plenum is defined in NFPA 90A as a compartment or chamber to which one or more air ducts are connected that form part of the air distribution system. Rated Cables Comparison Plenum Vs Riser Fiber Cabling Solution. 154 (A) requires cables to be plenum rated if installed in plenums but the way the section is worded it is reffering to the duct, plenum and other space as the raceway. In both commercial and residential buildings, non-plenum cable can be used to … A plenum is an area where the building’s air ducts are connected for heating, ventilation and air conditioning; raised floors and drop ceilings are two examples. If you can see wood it's not an "other space for enviromental air. Chief Plenum Rated Ceiling Enclosure Storage Box Cms492 B H Where the plenum cables are installed near the ceilings, CMRs are installed near the floors of your building. Duct work is … Product Details The trim-to-fit plenum has an inside measurement of 20 in. Non-Plenum cables, on the other hand, are much cheaper and not as fire-resistant. OFNR LSZH Cable. Teflon, I think. The Plenum Box Size is the amount of air that can pass through the diffuser without restriction. #3. In order to ensure proper ventilation, plenum spaces are usually located between the ceiling and the floor above or between the floor and the crawlspace below. Any large space designated for any type of air flow or routing of systems, can be called a plenum. Jack understands easily the concept of the new projects and his crew finds the best technical solutions for installations in an eficient time and production. 300 22 C 1 Other Es For Environmental Air Plenums. A plenum is a space designated for air flow or can describe a space devoted to mechanical, electrical or sprinkler lines. To the extent of cost funds, the non-plenum link is typically near a large portion of the … Non-plenum cables can be used anywhere except plenum space and air ducts. Am I reading it correctly? J jimthesparks Member Location Chicago, IL Jun 3, 2011 #7 iMuse97 said: In building construction Plenum is a separate space provided for air circulation for heating, ventilation, and air-conditioning. Scheme Of Ceiling Plenum And Cable Scientific Diagram. w. In the event of fire, its outer material is more resistant to flames and, when burning, produces less smoke than ordinary cabling. The ceiling plenum will thus be positive 0. a return air plenum can be easily designed and con-trolled to be positively pressured. Spigots have gaskets installed. In non-plenum regions, riser-rated wires run between floors through cable risers or elevator shafts. Fsec Rr 139 06. 00 per foot, while riser cables cost around $0. Typical linear diffusers don’t have a damper by themselves. 4. A plenum ceiling is one that uses the space between the top of the suspended ceiling and the bottom of the floor above to handle air for ventilation. They are typically used for more basic networks, primarily in residential settings, but are still found in commercial offices as well. Teflon cables are heat resistant and emit less smoke compared to regular PVC cables. The general rule is, if the open space is used as the return for the air handler, then it is a plenum space. Duct. 0 similar questions has been found Is an open ceiling considered a plenum? Non-Plenum Cable: Non-plenum link or "polyvinyl chloride" link is frequently less substantially less costly than the plenum link. Non . King electric what is a plenum available options to heat e 5 myths about plenum cables home scheme of ceiling plenum and cable scientific diagram when to use plenum cables vs riser non. Exception: This section shall not apply to the joist or stud spaces of dwelling units where the wiring passes through such spaces perpendicular to the long dimension of such spaces. Suspended ceilings can contribute to LEED® EA credits: 0. plenum is used for return air purposes, as well as some other air-handling spaces. The "ceiling load" is a positive load to the space during cooling - that is, heat enters the space from the plenum. If the space is nothing but drywall, steel, and /or monokote it could be a plenum. Every supply air diffuser has a specific airflow. Some drop ceilings are actually designed tight enough to where air circulation is restricted and may be considered a non-plenum area. In many cases, the term “suspended ceiling,” used for wiring and for recessed luminaires, does not necessarily represent a plenum. Burning plastic is … It can support an operating temperature from 0 to 70 degrees Celsius. Plenum spaces allow air to move through a building. Plenum-rated cabling is ASS to work with. iwire Moderator Staff member Location Massachusetts Sep 20, 2004 #8 A plenum space is a part of a building that can facilitate air circulation for heating and air conditioning systems, by providing pathways for either heated/conditioned or return airflows, usually at greater than … Non-plenum cables can be regarded as general purpose cables. 24. If they are not ducted then it's a plenum. This qualifies this ceiling as a plenum ceiling, and all the cables that go through that ceiling must be plenum rated. Plenums are usually box-shaped and made of sheet metal. It connects your HVAC system’s air handler to your ductwork. A non-plenum airspace can accidentally … A “plenum" space is the part of a building that enables air circulation by providing pathways for heated/conditioned and return airflows at a higher pressure than normal. If there was a fire, the smoke and toxins would travel quickly around the building. The term “Plenum” and “Non-Plenum” simply refers to the outer jacket/cover that protects the cable. (1) Wiring Methods. non-combustible, the additional care and costs involved in using combustible materials must Pop a ceiling tile and take a look. You can not plug cords in above a suspended ceiling. True plenum cable uses flame retardant low smoke materials such as Teflon FEP, should there be a fire the cable would … Painting an open plenum ceiling black creates a lot of drama and, if carefully planned, can draw highly focused attention to displays. Ceiling Systems: Open Plenum or Suspended? A new study suggests the difference may be more than just style. 7% to 17% for the retail design. A plenum space is the part of a building, or pathway, designed for circulating heated and cooled environmental air and for return airflows. • CISP is classified as non-combustible and can be installed in plenum areas without further consideration. Total energy savings ranged from 9% to 10. Air Return with Duct - Nonplenum Space Plenum vs. Plenum-rated cabling is between 1. There are three design solutions used to make the connection of the EPP plenum box to the 75mm duct strong and durable. A plenum is a box made of sheet metal. According to the study, suspended ceilings in the prototype office building cost 14. Cable Basics – Plenum vs Riser.