<Tr> <Td> CMH </Td> <Td> </Td> <Td> </Td> <Td> CSA FT1 </Td> </Tr> <P> Some cables are "UV - rated" or "UV - stable" meaning they can be exposed to outdoor UV radiation without significant destruction . </P> <P> Plenum - rated cables are slower to burn and produce less smoke than cables using a mantle of materials like PVC . Plenum - rated cables may be installed in plenum spaces where PVC is not allowed . </P> <P> Shielded cables (FTP or STP) are useful for environments where proximity to RF equipment may introduce electromagnetic interference, and can also be used where eavesdropping likelihood should be minimized . </P>

Utp cat 5 networking cable uses twisted copper wires to