We wired a pier with 120v & 240v receptacles & made provisions for a dozen lighting outlets on various pylons along the pier. All the piping is in one run of PVC to all the j-boxes. All the wiring has been pulled based on the home owners decision on 120v lighting. My question, now that the owner has found low voltage lighting for the pier is there a problem with both 12v & 240v in the same conduit?