There is a need to take into account the ease of installation and maintenance

Since the distance determines the effect of lighting, there is a need to take into account the ease of installation and maintenance, so under normal circumstances, the height of the wall lamp needs to be about 2.2-2.5m from the ground, but if the table, you need to work from the horizontal line of about 1.5 meters Can be. Wall lights to install the bedroom only need to be about 1.5 meters from the ground can be.