Why is 900 pair rarely exceeded when running cable between two buildings?

The 900-foot limit for running Ethernet cable between two buildings is primarily due to signal attenuation and the potential for data loss. Beyond this distance, the quality of the signal deteriorates significantly, leading to slower speeds and increased error rates. Additionally, using longer runs may require additional equipment, such as repeaters or switches, to maintain signal integrity, which can complicate installation and increase costs. For optimal performance, adhering to the 900-foot limit ensures reliable connectivity and minimizes potential issues.