Best Answer: the rate of diffusion is directly proportional to the concentration gradient. The greater the difference in concentration between two areas, the greater the rate of diffusion.
EPC-40: Electrical Plastic Conduit : Designed for normal duty application. EPC-80: Electrical Plastic Conduit : Designed for heavy duty application.
This standard covers the following types of electrical polyvinyl chloride (PVC) conduit (EPC-40 and EPC-80). The designations â40â and â80â refer to Schedules 40 and 80, respectively, of iron pipe dimensions.