User's Manual

TV antenna connectors protection
External television antenna grounding
If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is
electrically grounded so as to provide some protection against voltage surges and built-up static charges.
Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper
electrical grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna-
discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding
electrodes, and requirements for the grounding electrode.
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
30 Chapter 4 Safety notices for desktops, thin clients and personal workstations