Lenovo ThinkStation D20 C&L 1 Pub Switzerland English-French-Greek-Ita - Page 16

Note to CATV system installer, Example of antenna grounding, the grounding system of the building

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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 1 Ground clamp 5 2 Antenna lead-in wire 6 3 Antenna discharge unit (NEC 7 Section 810-20) 4 Grounding conductors (NEC Section 810-21) Figure 1. Proper grounding for the cable Power service grounding electrode system (NEC Article 250, Part H) Ground clamps Electronic service equipment 12 ThinkStation Safety and Warranty Guide

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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, speciļ¬es 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
1
Ground clamp
5
Power service grounding
electrode system (NEC Article
250, Part H)
2
Antenna lead-in wire
6
Ground clamps
3
Antenna discharge unit (NEC
Section 810-20)
7
Electronic service equipment
4
Grounding conductors (NEC
Section 810-21)
Figure 1. Proper grounding for the cable
12
ThinkStation Safety and Warranty Guide