Pvs Conduit is the  lightest in weight compared to others conduit materials and usually lower in cost than other forms of conduit. There is complete fittings range for PVC conduit. PVC conduit may be heated and ent in the field. JOints to fittings are made with slip-on-connections, which set up rapidly after assembly and attain full strength in about one day. Since slip-fit sections do not need to be rotated during a assembly. Since PVC conduit has a higher thermal coefficient of expansion than other types, it must be mounted so as to allow for expansion and contraction of each run. Care should be taken when installing PVC underground in multiple or parallel run configurations due to mutual heating effect of cable.