Abstract: A fire resistant cable, the cable includes an electrical conductor surrounded by an insulation layer. The insulation layer is a composite material including ceramic particles embedded in a polymer matrix. The ceramic particles and polymers are chosen such that the ceramic particles start to sinter together at a temperature lower than the complete decomposition of the polymer chains. When the cable is exposed to heat and flame the polymer degrades, the ceramic particles sinter together and the insulation layer becomes a continuous sintered ceramic layer that both insulates and supports the conductor for improved circuit integrity.

Abstract: A flexibility testing apparatus for wire or cable. Two circular, rotatable gears are mounted to a frame, one gear being a drive gear and the other being a driven gear. The driven gear is coplanar with the drive gear and the drive gear teeth are enmeshed with the driven gear teeth. Two rods are connected to the mounting holes of the drive gear and the wire or cable is attached to the rods using barrel end clamps for flexing. The driven gear can be rotated at different speeds by an electric motor or a pneumatic driving device.