Lenovo IdeaCentre B550 Touch Safety and Warranty guide - Page 18
Example of antenna grounding, Special note for users in Norway
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to the grounding system of the building, as close as possible to the point of cable entry as practical. Example of antenna grounding Ground clamp Antenna lead-in wire Antenna discharge unit (NEC Section 810-20) 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 Special note for users in Norway: "Utstyr som er koplet til beskyttelsesjord via nettplugg og/eller via annet jordtilkoplet utstyr - og er tilkoplet et kabel-TV nett, kan forårsake brannfare. For å unngå dette skal det ved tilkopling av utstyret til kabel-TV nettet installeres en galvanisk isolator mellom utstyret og kabel- TV nettet." Safety and warranty guide 13