In this work the prediction of the resistance of power cables to flame propagation is addressed. This is a very important safety issue in several critical installments, such as the nuclear power plants. In this respect, two issues are of fundamental safety importance: i) cables that supply electric power to safety systems must work also in case of fire; ii) cables must not provide a means of propagation of the fire throughout the nuclear power plant. To verify this second issue, large scale tests are performed according to different international standards. These tests, done in suitable laboratories with controlled atmosphere,...