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FIGURE A
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
GROUND
ELECTRIC
SERVICE
EQUIPMENT
ANTENNA
LEAD IN
WIRE
ANTENNA
DISCHARGE UNIT
(NEC SECTION810-20)
GROUNDING CONDUCTORS
(NEC SECTION810-21)
GROUND CLAMPS
NEC - NATIONAL ELECTRICAL CODE
$2898A
1984, provides information with respect to proper ground-
ing of the mast and supporting structure, grounding of the
lead-in wire to an antenna discharge unit, size of grounding
conductors, location of antenna-discharge unit, connection
to grounding electrodes, and requirements for the ground-
ing electrode. (Fig. A)
14. Lightning-For added protection for this "IV receiver during
a lightning storm, or when it is left unattended and unused
for long periods of time, unplug it from the wall outlet and
disconnect the antenna or cable system. This will prevent
damage to the TV due to lightning and power-line surges.
15. Power Lines-An outside antenna system should not be
located in the vicinity of overhead power lines or other
electric light of power circuits, or where itcan fall into such
power lines or circuits. When installing an outside antenna
system, extreme care should be taken to keep from touch-
ing such power lines or circuits as contact with them might
be fatal.
16. Overloading-Do not overload wall outlets and extension
cords as this can result in a risk of fire or electric shock.
17. Object and Liquid Entry-Never push objects of any kind into
this TV through openings as they may touch dangerous
voltage points or shortout parts that could result in a fire or
electric shock. Never spill liquid of any kind on the TV.
18. Servicing-Do not attempt to service this TV yourself as
opening or removing covers may expose you to dangerous
voltage or other hazards. Refer all servicing to qualified
service personnel.
19. Damage Requiring Service-Unplug this TV from the wall
outlet and refer servicing to qualified service personnel
under the following conditions:
---,,_1-_-- POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
a. When the power-supply cord or plug isdamaged or frayed,
b. If liquidhas been spilled, orobjects have fallen intothe TV.
c. If the TV has been exposed to rain or water.
d. If the "IV does not operate normally by following the oper-
ating instructions. Adjust only those controls that are cov-
ered by the operating instructions as improper adjustment
ofother controls may result indamage and willoften require
extensive work bya qualified technician to restore the TV
to its normal operation.
e. If the TV has been dropped or the cabinet has been
damaged,
f. When the TV exhibits adistinct change inperformance-this
indicates a need for service,
20. Replacement Parts-When replacement parts are required,
be sure the service technician has used replacement parts
specified by the manufacturer that have the same charac-
teristics as the original part. Unauthorized substitutions
may result in fire, electric shock, injury to persons or other
hazards.
21. Safety Check-Upon completion of any service or repairs to
this TV, ask the service technician to perform routine safety
checks to determine that the "IV is in proper operating
condition.
-3 - EN