LANs & Data Connections

Local area networks and data lines are particularly prone to power quality problems. Since these lines may run from building to building, they can involve multiple grounds and power sources. If a data line connects computers in different buildings, each with its own ground, current flow could cause data errors or even damage to l/O boards and network hubs.

When installing data lines for LANs or other computer systems, make sure the lines are isolated from electrically noisy loads. When connecting buildings with different ground systems via a data line, consider using a fiber optic isolator. This will prevent the flow of current on the line. If a fiber optic isolator is not used, a surge protection device should be considered. This would be installed where the data line enters each facility, and would prevent surges from coming in at all.