The insulation value of the specimens for the full scale test shall be such that the average temperature of the thermocouples on the unexposed surface described in Sec. 164.007-4(f)(2) will not rise more than 139 [deg]C. (250 [deg]F.) above the initial temperature, nor will the temperature at any one point on the surface, including any through metallic connection, rise more than 181 [deg]C. (325 [deg]F.) above the original temperature at the end of 60 minutes. The results obtained on the small scale test 2[foot] x 2[foot] (60 cm. x 60 cm.) shall be recorded.