scope:

This part of IEC 332 specifies a method of test on a single vertical insulated wire or cable under fire conditions and the requirements for compliance.

NOTES

1 Since the use of insulated wire or cable which retards flame propagation and complies with the requirement of this standard is not sufficient by itself to prevent propagation of fire under all conditions of installation, it is recommended that wherever the risk of propagation is high, for example in long vertical runs of bunches of cables, special installation precautions should also be taken. It cannot be assumed that because the sample of cable complies with the performance required in this standard a bunch of cables will behave in a similar manner. (See IEC 332-3)

2 The method specified is not suitable for the testing of small wires, less than 0.8 mm diameter or small strands less the 0.5mm² because the conductor melts before the test is completed.  (See IEC 332-2)