Sharp LC-20SH4U Operation Manual page 6

IMPORTANT SAFETY PRECAUTIONS (Continued)
■ If an outside antenna is connected to the television equipment, be sure the antenna system is grounded so as to
provide some protection against voltage surges and built-up static charges. Section 810 of the National Electrical
Code provides information with respect to proper grounding 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 grounding electrode.
NEC—NATIONAL ELECTRICAL CODE
■ Lightning – For added protection for this television equipment during a lightning
storm, or when it is left unattended and unused for long period of time, unplug it
from the wall outlet and disconnect the antenna. This will prevent damage to the
equipment due to lightning and power-line surges.
■ Power Lines – An outside antenna system should not be located in the vicinity of
overhead power lines or other electric light or power circuits, or where it can fall
into such power lines or circuits. When installing an outside antenna system,
extreme care should be taken to keep from touching such power lines or circuits
as contact with them might be fatal.
■ To prevent fire, never place any type of candle or flames on the top or near the
TV set.
■ To prevent fire or shock hazard, do not expose this products to dripping or
splashing. No objects filled with liquids, such as vases, should be placed on the
products.
■ To prevent fire or shock hazard, do not place the AC cord under the TV set or
other heavy items.
■ Do not display a still picture for a long time, as this could cause an afterimage to remain.
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
GROUND
CLAMP
ELECTRIC
SERVICE
EQUIPMENT
ANTENNA
LEAD IN
WIRE
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
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