This standard applies to the inspection of the flame retardant performance of a single Wire and cable when it is directly burned with a specified flame in an inclined state, and specifies the equipment and methods for inclined combustion test, and gives recommended performance requirements. The specimen should be intercepted from the finished Wire and cable or soft online, and the length is about 300mm. Before the test, ensure that the specimen, equipment and surrounding air reach thermal equilibrate at a temperature of (23.0 ± 5.0) ° C. The ignition source should meet the specified laboratory blowtorch standard and be calibrated regularly. The test step involves fixing the specimen in the middle of the metal cover and making its central axis at a 60 ° angle to the horizontal plane.