Note To Catv System Installer; Example Of Antenna Grounding - Lenovo ThinkPad X1 Hybrid Safety And Warranty Manual

Note to CATV system installer

This reminder is provided to call the CATV system installer's attention to Article
820-40 of the National Electrical Code (NEC) that provides guidelines for proper
grounding and, in particular, specifies that the cable ground shall be connected to
the grounding system of the building, as close as possible to the point of cable
entry as practical.

Example of antenna grounding

Proper grounding for the cable
1
Ground clamp
2
Antenna lead-in wire
3
Antenna discharge unit (NEC
Section 810-20)
4
Grounding conductors (NEC
Section 810-21)
Figure 1. Proper grounding for the cable
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5
Power service grounding electrode
system (NEC Article 250, Part H)
6
Ground clamps
7
Electronic service equipment