5
20. Wall or Ceiling Mounng – The appliance should be mounted to a wall or ceiling only as recommended by the
manufacturer.
21. Power Lines – An outdoor antenna should be located away from power lines.
22. Outdoor Antenna Grounding – If an outside antenna is connected to the receiver, be sure the antenna system
is grounded so as to provide some protecon against voltage surges and built up stac charges. Secon 810 of
the Naonal Electric Code, ANSI/NFPA No. 70-1984, provides informaon with respect to proper grounding of
the mats and supporng structure grounding of the lead-in wire to an antenna-discharge unit, size of grounding
connectors, locaon of antenna discharge unit, connecon to grounding electrodes and requirements for the
grounding electrode. See Figure below.
ANTENNA
ANTENNA DISCHARGE UNI
GROUNDING CONDUCTORS
POWER SERVICE GROUNDING ELECTRODE SYSTEM
GROUND CLAMPS
SERVICE EQUIPMENT
GROUND CLAMP
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
Note to the CATV System Installer:
This reminder is provided to call the CATV system installer’s aenon to
Arcle 820-40 of the NEC, that provides guidelines for proper grounding and, in parcular, species that the
CATV cable ground shall be connected to the grounding system of the building, as close to the point of cable
entry as praccal.
23. Apparatus shall not be exposed to dripping or splashing. Do not place objects lled with liquids, such as vases on
the apparatus.
24. Where the MAINS plug or an appliance coupler is used as the disconnect device, the disconnect device shall
remain readily operable.
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