This standard gives the requirements for the flame-retardant characteristics of electric cables and describes the method for testing them.
Note : Since the use of a flame-retardant cable alone is not sufficient to prevent propagation of fire under any conditions of installation, it is recommended that, wherever the risk of fire propagation is high, for example in high vertical runs of bunches of cables, special installation precautions should also be taken.
PS 852-1978 history
1978PS 852-1978 SPECIFICATION FOR FLAME-RETARDANT CHARACTERISTICS OF ELECTRIC CABLES