UL flame retardant grade of network cable

Network cables include finished Network Cable and network Patch Cable, unshielded and shielded network cables. Many small partners have no idea about the UL fire rating of network cables. Today let Kingwire explain it to you:

UL fire ratings are classified as follows:

A: Horizontal fire test
B: VW-1: Vertical fire test, droplets cannot ignite the batt.
VW-1SC: Vertical fire test, the insulated core wire is tested separately from the finished wire.
C: CL2 (VERTICAL TRAY FLAM TEST): vertical combustion test in an airtight combustion chamber (similar to UL1581 in airtight buildings)
D: CL2R (RISET CABLE)
E: CL2P (PLENUM CABLE)
F: CM (Communication Cable communication line);
G: CMR;
H: CMP.

Contents of UL plastic material 94-V0 (94V0 is the so-called flame retardant grade, which is divided into 5 grades)

When the 94-V0 burns, the fire will go out as soon as it leaves and will not spontaneously ignite.
When the 94-V1 is burning, the fire will burn for 1 second and then extinguish immediately after leaving, and will not spontaneously ignite
When the 94-V2 is burning, the fire will burn for 2 seconds after leaving, and it will go out immediately and will not spontaneously ignite
When 94-V5 is burning, the fire will burn for 5 seconds after leaving, and it will go out immediately and will not spontaneously ignite
94-HB will burn until only carbon remains when the fire leaves

Shenzhen Kingwire Electronics Co., Ltd., a professional network cable manufacturer, mainly produce Cat5e Network cable and Cat6 Ethenet Cable ans CAT7 Lan Cable as well as Cat8 Network Cable, if you need any further information, please feel free to contact us.