So PVC is OK set in the concrete, it won't degrade to badly over next 30 - 40 years ? I thought doing it this way made sense to minimize the distance and ease install of wire - whole lot more wire to go up and over - not to mention ever wanting to replace that kind of wire run - seemed like a good solution, wonder how much this might cost - I'll pull the wire and terminate it myself, just want the conduit and boxes in place. Since it's not "true" or 120V electrical use who can lay it in before the slab is poured ? GC's crew or a sub ? ? ?