Push the clip over the cable (it should be a tight fit) and hammer the nail into the wall or other surface. Place a clip approximately every 60 cm if the cable runs on a vertical or overhead surface. On horizontal surfaces a clip every 1 to 2,5 metres will suffice. For cable thicker than 16 mm outside diameter it is better to use saddles.
New concrete requires special treatment... New concrete must cure a minimum of 28 days before either tiling or putting a dressing onto the new concrete. There are two reasons for this: 1) As the concrete cures, drying and shrinkage cracks could occur. These cracks may eventually show up in tile or dressing applied before the 28 day curing period.
You should give it 24 hours to dry before applying tile grout, same on both walls and floor tiles, dont leave it longer than a week to grout and dont grout within 12 hours because the tile adhesive has to dry, so i would say tile and then grout the day after, giving atleast 12 hours minimum drying time, but technically do it after 24 hours.