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Lightning protection

For added protection of any product during a lightning storm, or when it is left unattended and unused 

for long periods of time, unplug the product from the wall outlet and disconnect the antenna or cable 

system. This will prevent damage to the product from lightning and power line surges.

Table 4-1

  Antenna Grounding

Reference

Grounding Component

1

Electric Service Equipment

2

Power Service Grounding Electrode System (NEC Art 250, Part III)

3

Ground Clamps

4

Grounding Conductors (NEC Section 810.21)

5

Antenna Discharge Unit (NEC Section 810.20)

6

Ground Clamp

7

Antenna Lead-in Wire

Note to CATV system installer

This reminder is provided to call the CATV systems installer’s attention to section 820.93 of the 

National Electric Code, which provides guidelines for proper grounding and in particular, specify that 

the Coaxial cable shield shall be connected to grounding system of the building, as close to the point 

of cable entry as practical.

TV antenna connectors protection 29