What are the uses of lightning protectors?

The use of lightning protectors offers enhanced system reliability and protection for expensive equipment from lightning or surges originating on the power line. Surges can be generated by lightning, static buildup or equipment on the AC mains such as AC compressors. A typical equipment installation provides multiple paths for a surge to enter and damage sensitive equipment. A surge can propagate down an RF antenna cable or up an Ethernet cable or AC/DC power connection. The surge can generate both common and differential mode voltages that can damage equipment via these interfaces.