LG 43UN7300PUF Manuel Du Propriétaire page 17

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NOTE TO CABLE/TV INSTALLER
(For USA and Canada)
This reminder is provided to call the CATV system installer's attention to
Article 820-40 of the National Electric Code (U.S.A.). The code 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 to the point of the cable entry as practical.
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