What is CMG rated wire?
CM/CMG — Communications cable for general purpose use. It is intended for general use within buildings in accordance with the NEC Articale 800.53(E)(1). These cables do not spread flame to the top of a tray in the Vertical-Tray Flame Test described in the UL 1865 standard.
Is CMG cable outdoor rated?
They are still fire resistant, but don’t meet the strict requirements of either of the previous cables. Typically, CMG cables are used in most home cable installations. This designation simply means that the cable has been engineered to be buried without any kind of outside protection.
What is UL Type CMR cable?
CMR Cable Jacket CMR cable stands for “Communications Multipurpose Cable, Riser”. It is a cable jacket fire resistance rating defined in Article 800 of the NEC. CMR cable is also referred to as “riser-rated cable” and designed to prevent fires from spreading between floors through risers or vertical shafts.
Is CL3R plenum rated?
Common Jacket Ratings All in-wall and riser applications; not permitted in plenums. All in-wall, plenum and riser applications. CMR, CL3R, CL2R. All in-wall and riser applications; not permitted in plenums.
What is CCA cable and why should it be avoided?
Poor flexibility and bend radius: CCA conductors are brittle and break easily; it has been noted that even moving a patch panel or a faceplate can cause failures. Due to low tensile strength, CCA wires may also break off as a result of pulling or shearing, which can occur in packaging or during delivery.
What is FT4 fire rating?
CSA FT4 Flame Test The FT4 certification is one of the most popular as it has one of the toughest tests to pass, given the 70,000 BTU/hour flame. This certifications testing procedure has cables mounted on a vertical tray, which are exposed for 20 minutes to a 70,000 BTU/hour flame.
How do I know if my wire is outdoor rated?
Outdoor-rated cables go through additional testing such as a cold-bend test where the cable will be kept at a temperature such as -20C for 4 hours while bent in a pre-determined radius. If the cable does not crack it passes.
What does CMP rated mean?
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.
What is Cat5e CMP?
Plenum Cable (CMP) is cable that is laid in the plenum spaces of buildings. Additionally, no high-voltage powered equipment is allowed in the plenum space because presence of fresh air can greatly increase danger of rapid flame spreading should the equipment catch on fire.
What is CL2 rated speaker wire?
A CL2 rating meaning that a cable has passed the required NEC test for a high rating of fire resistance. The cable’s materials are not going to burn during a sudden surge of electricity up to 150 watts and the cable itself will not carry a flame.
Is the CMX UL listed or UL recognized?
The same applies to Flame Retardant Non-Corrosive (FRNC) versions. CMX UL Listed or UL Recognized versions are applicable to PUR jackets; however, both types only exist with individual vertical or horizontal fire tests.
What does the UL rating on a cable mean?
Most consumer products you see have an Underwriter’s Laboratories (UL) rating for safety, and cables are no exception. Here are a few common markings you may see on the wire jacket, and what they mean. Looking for more cable information?
What is the purpose of a CMG cable?
CM/CMG — Communications cable for general purpose use. It is intended for general use within buildings in accordance with the NEC Articale 800.53 (E) (1). These cables do not spread flame to the top of a tray in the Vertical-Tray Flame Test described in the UL 1865 standard.
Can a Cl2 cable be substituted for a CMG cable?
CL2X cables can be used in some, but not all of the same locations as a CL2 cable, and a CL2 cable can be substituted for a CL2X cable but not the other way around. UL categorizes CMG / CM, CL3, and CL2 cables as “General Purpose”, and CMX, CL3X, and CL2X as “Dwelling.”