Abstract
During the investigating cause of a fire, the organic insulating materials of electric wires and distributing fixtures carbonized by the fire are found out. It is necessary to make clear the electrical characteristics of carbonized materials. The studies on the relation between the heating temperature of carbonized wood and electrical resistance has been carried out so far, but it is not studied enough for using the investigating cause of a fire. Then the authors carried out the experiment to investigate the effects of heating temperature on electrical characteristics of carbonized organic insulating materials.
