
Do Not Use Basket Tray against a Tight Ceiling
When a new office design is in its initial stages, it is critical to consider proper handling of utilities, power water and cabling inside the walls and ceiling. For cabling, it is necessary to use hooks to hold the cables above the drop ceiling. When the installation of cable involves large numbers of cables traversing lengthy expanses, it is normal to install cable ladder trays up in the ceiling to carry the bulk of the cable along the main corridors of the office. Cable ladders vary in quality and cable handling capabilities. The amount of cable and the budget of the project will determine the type of cable ladder that will be built.
A higher quality cable ladder will, in the long run, save time and money during the installation phase of a cabling project. The alternative to a cable tray is to install cable conduit. Considerations in choosing to use a cable ladder tray system include the following:

communications, because light propagates through the fiber with little attenuation compared to electrical cables. This allows long distances to be spanned with few or no repeaters. Additionally, the per-channel light signals propagating in the fiber can be easily modulated at 1 Gb/s.
rt distances, up to 550 m (600 yards), and single-mode fiber used for longer distance links. Because of the tighter tolerances required to couple light into and between single-mode fibers (core diameter about 10 micrometers), single-mode transmitters, receivers, amplifiers and other components are generally more expensive than multi-mode components.