Low Voltage Step Lighting Rough In Preparation looks just like this. Conduits and electrical boxes placed before concrete is poured. The concrete contractor or pool builder usually places them in the wet concrete where they want them. We leave plenty of flexible, watertight and erosion proof conduit to accomplish this. The wire are already pulled into place because pulling them later with all the twists and turns of flexible conduit may prove very hard to do. After all the tile is set and the pool and backyard haven is completed, we install the low voltage lights. This type of light is very nice and adds so much to a pool area. They are not cheap, but well worth it.