What are the common types of electrical conduit and their applications?

Common conduit types include EMT (Electrical Metallic Tubing) for dry indoor locations and economical installation, rigid metal conduit (RMC) for outdoor and hazardous areas requiring high protection, PVC conduit for underground and corrosive environments, and flexible metal conduit for motor connections and vibrating equipment. Selection depends on environment, physical protection needs, fire rating requirements, and local code specifications.