Plenum rated (CMP) cable has an outer jacket made of fire-resistant material like Teflon to prevent fire from spreading. When a fire happens, plenum rated cable is designed to: Restrict flame propagation to no more than five feet. Limit the amount of harmful smoke released.
Why do I need plenum rated cable?
Plenum rated cable has a special insulation that has smoke and low flame characteristics. It is mandated to be installed in any “air handling” space. … At that point, the use of plenum cables ensures safety. However, use of plenum spaces may pose a serious hazard in case of fire.
What is meant when a cable is described as plenum rated or non-plenum rated?
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).
What is the difference between plenum and non-plenum cable?
Non-plenum Cable Explanation Non-plenum cable usually serves to run through non-air circulating areas. Non-plenum includes riser rated cable, and other rated cables like CM cable, etc. … Thus, plenum cable can replace riser cable, but not the other way around. And the price of riser cable is less than plenum cable.Do I have to use plenum cable in my house?
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. … The lack of wall or ceiling return air grates is usually a sure sign that you require Plenum Rated Cable.
Do you need plenum cable in conduit?
Do you need plenum cable if it’s in conduit? If you’re using plenum-rated conduit, you don’t need to use plenum-rated cable. This is true even if the conduit is in a plenum space. The most common types of plenum conduit are innerduct (often used for fiber runs) and metal.
Can I use riser cable in my house?
Senior Member. You do NOT need plenum or riser rated for in wall home use, unless for some silly reason you are running the cables inside one of your air conditioning ducts. You most likely DO need some sort of CL2, CL3, CM, etc. rating to meet your local/state/whatever fire codes.
What makes a ceiling plenum rated?
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. 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).What is plenum rating?
Plenum rated cable has a special insulation that has low smoke and low flame characteristics. Plenum cable is mandated to be installed in any “air handling” space. … This qualifies this ceiling as a plenum ceiling, and all the cables that go through that ceiling must be plenum rated.
How do I know if a cable is plenum rated?Look for CMP(means Communications Plenum Cable) ,CL3P(Shielded Multi-Conductor Plenum Security Cable) , or CL2P(Class 2 plenum cable ) marked on the cable. Plenum cable is covered with a fire proof plastic layer of either a low-smoke polyvinyl chloride (PVC) or a fluorinated ethylene polymer (FEP).
Article first time published onWhich is better CAT 5 or Cat6?
What are the Advantages of a Cat6 Ethernet Cable? Compared to Cat5/5e cables, Cat6 cables have stricter performance specifications and significant higher data transfer speeds at greater distances. They are more tightly wound than Cat5 cables, and the cable conductors and cable sheath are thicker as well.
Is Romex plenum rated?
Romex is not rated for this type of use.
Can plenum rated cable be used outside?
Plenum-rated coax cables can be used for indoor and outdoor feeder runs.
Why is plenum cable more expensive?
When running cables within plenum spaces, plenum cables are a must. Because plenum cables are built to a higher fire resistance standard than riser cables, plenum cabling is more expensive than riser cabling.
Is LSZH cable plenum rated?
Users often confuse the Plenum rating with the LSZH rating since both include a provision for Low Smoke. However, the Plenum rated cables often contain Fluorine, which falls under the Halogen category. The LSZH cables do not contain the Halogen type compounds that form these toxic substances.
Can plenum cable be used in conduit?
No a plenum cable is only required in a plenum the space above a false ceiling. In a conduit you can use almost anything. This is because a conduit stops most fires and prevents smoke from a burning cable from getting out.
Is riser cable solid or stranded?
It’s construction makes it great for long runs which you want when you put it in risers or walls because the majority of these cables are going to have solid conductors. Solid conductors help give you better signal strength over longer distances and are stronger for pulling through the walls.
Are zip ties plenum rated?
ColorBurgundyWeight (Lbs)0.52
Do riser cables affect performance?
The riser probably does affect performance a bit. 3700 vs 3800 is only like 2%, so in the grand scheme of gaming if you were getting 90FPS in a game before, with the riser you’d get 2% less, so 1.8 less FPS, or 88.2 FPS.
What is the difference between plenum and PVC cable?
PVC (Polyvinyl Chloride) is what your standard Category 5e and Category 6 cable jacket is constructed of. … Plenum cable is made of Teflon or FEP which gives off much less poisonous gas than PVC when it burns.
What is plenum-rated conduit?
Plenum-rated cable gets its name from an HVAC term—plenum spaces. … When no conduit is used, plenum cable is often required since the cable is considered to be freely installed. Plenum spaces allow fire and smoke to travel quickly.
Is electrical PVC conduit plenum-rated?
PVC cannot be used in air handling plenums. You cannot use standard Romex in an underground raceway. Raceways installed underground are considered “Wet Location” and only cabling listed for wet location can be used. Refer to NEC 680 for the requirements of wiring around a swimming pool.
What's the purpose of a plenum?
In building construction Plenum is a separate space provided for air circulation for heating, ventilation, and air-conditioning. It is commonly found in the space between the structural ceiling and a drop-down ceiling or under a raised floor.
What is plenum rated cable made of?
Plenum cable is jacketed with a fire-retardant plastic jacket of either a low-smoke polyvinyl chloride (PVC) or a fluorinated ethylene polymer (FEP).
Is FT4 cable plenum rated?
FT4 and FT6 are Canadian fire code standards related to the fire and smoke retardancy characteristics of communications cable. FT4 is roughly equivalent to USA CMR(riser) rating and FT6 is equivalent to CMP (plenum) rating in the USA.
Is MC cable plenum rated?
In summary, it is important to know that while Interlocked Metal-Clad Cable, without any PVC jacketing, is not technically “Plenum” rated it is perfectly acceptable to be located in an environmental air space, such as the space above a suspended or dropped ceiling in accordance with National Electrical Code section …
Is electrical tape plenum rated?
Plenum Rated Cable Ties that Comply with National Electric Code. … VELCRO® Brand ONE-WRAP® FR Tape is UL rated and suitable for use in air handling spaces in accordance with Section 300.22 (C) and (D) of the National Electrical Code.
Is CL2 cable plenum rated?
CL2: This is a cable jacket fire resistance rating defined in Article 725 of the National Electric Code. … CL2 cables may be further classified as “CL2R” (Riser Rated) and CL2P (Plenum Rated).
Can plenum cable be buried?
Plenum cable is rated for the “plenum spaces” in buildings, which are simply the parts of the building that facilitate air circulation in heating and air conditioning systems. … This designation simply means that the cable has been engineered to be buried without any kind of outside protection.
What does VW 1 mean on wire?
VW-1: These cables have passed a VW-1 flame test and carry a “fire resistant” designation. The VW-1 test provides an assessment of the cable insulation material and resilience to fire. This is one of the most severe tests since it’s performed vertically and can be viewed as a worst-case test condition.
Is Cat6 plenum rated?
Cat6 Cable is used in network applications and has been designed specifically for Gigabit Ethernet applications. They perform at high-data transfer rates, and work with ATM and gigabit speed products. This particular cable is a plenum rated blue UTP (Unshielded Twisted Pair) bulk cable.
