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.
(EMT) Metal tubing meant to contain electrical conductors. Often called thin-wall conduit, to contrast it with rigid metal conduit (RMC), which has a similar sequence of sizes but much heavier walls. Compared with RMC, EMT is about a third the price, and is also lighter and easier to install.