Marine cable

Wires & Cables CMR (Riser Flame Test) Riser rated cables meets UL 1666. Cable samples on a vertical shaft are burned at 154.5KW (527500 BTU / Hr) for 30 minutes. To qualify for a riser rating, the cables must have the flame spread of less than 12 feet beyond the ignition point. This test does not look at the smoke density or toxicity. Riser cable is suitable for vertical shafts not defined as an environmental air plenum. CM (Vertical Tray Flame Test) General purpose cables meets UL 1581. Cables samples on a feet vertical tray are burned at 20KW (70,000 BTU / Hr) for 20 minutes. The cable is deemed to pass the test if the flame spread will not extend for that the number of testing samples is different. This test does not look at the smoke density or toxicity. The CMG cables are usually used in runs penetrating single floor. This cable cannot be installed in vertical pathways. CMG (Vertical Tray Flame Test) This general purpose cables also meets UL 1581. CM and CMG are similar, both recognized in Canada and USA. This test does not look at the smoke density or toxicity. The CMG cables are usually used in runs penetrating single floor. This cable cannot be installed in vertical pathways. The restricted cable meets UL 1581, Limited-use. The test consists of 25 feet long ventilated tunnel. The cable is placed on a ladder inside the tunnel and the flame of 30,000 BTU / Hr is applied to the cable 15 seconds and on seconds off five times for a total exposure to the flame of 1 minute and 15 seconds. To qualify for this test, after the test flame is removed, the cable can flame for not more than 60 seconds and the charred portion will not exceed by 25%. UL 1581, VW-1 is similar to IEC 60332-1, except for the difference in the time for flame applied. This test does not look at the smoke density or toxicity. The CMG cable is suitable for use in dwellings and for use in raceway. This cable cannot be installed in bundles and must be protected in metal conduit. This type of cable is the minimum requirement in commercial installations. IEC60754-1/BS6425- 1 Emission Of Halogens This specifies a test for determination of the amount of halogen acid gas, other than the hydrofluoric acid, evolved during combustion of compound based on halogenated polymers and compounds containing halogenated additives taken from cable constructions. Halogen includes Fluorine, Chlorine, Bromine, Iodine and Astatine. All these elements are toxic by its nature. The material is considered to be halogen free if no green to blue-green flame discolouration occurs. The chlorine and the bromine would cause such a discolouration, however the existence of fluorine cannot be proven like that. Halogen Test www.siechem.com 217