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.
It is often used where rigid conduit is difficult to install or to connect permanently wired appliances, such as a water heater. Prewired conduit, or armored cable, offers an all-in-one solution with the wires already run through the flexible conduit. Generally made of PVC, rigid nonmetallic conduit is a good choice for outdoor residential applications, such as wiring landscape lighting or burying cables.