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9.
VENTILATION
Slots and openings in the cabinet back or bottom are provided for ventilation, and to
ensure reliable operation of the unit, and to protect it from overheating. These openings must
not be blocked or covered. The openings should never be blocked by placing the unit on a bed,
sofa, rug, or other similar surface. This unit should never be placed near or over a radiator or
heat source. This unit should not be placed in a built-in installation such as a bookcase or rack
unless proper ventilation is provided or the manufacturer’s instructions have been adhered to.
10. POWER SOURCE
This unit should be operated only from the type of power source indicated on the rating plate. If you are not sure of the
type of power supply to your home, consult your appliance dealer or local power company.
11. GROUNDING OR POLARIZATION
This unit is equipped with a polarized alternating-current line plug (a plug having one blade wider than the
other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert
the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to
replace your obsolete outlet.
12. POWER-CORD PROTECTION
Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.
13. LIGHTNING
To protect your unit from 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 unit due to lightning and power line surges.
14. 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 onto or against 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.
15. OVERLOADING
Do not overload wall outlets and extension cords, as this can result in a risk of fire or electric shock.
16. OBJECT AND LIQUID ENTRY
Do not push objects through any openings in this unit, as they may touch dangerous voltage points or short out parts
that could result in fire or electric shock. Never spill or spray any type of liquid into the unit.
17. OUTDOOR ANTENNA GROUNDING
If an outside antenna or cable system is connected to the unit, be sure the antenna or cable system is grounded to
provide some protection against voltage surges and built-up static charges, Section 810 of the National Electrical
Code (NEC), ANSI/NFPA 70, 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.
Wide plug
Introduction
EXAMPLE OF ANTENNA
GROUNDING AS PER THE
NATIONAL ELECTRICAL CODE
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
ANTENNA LEAD IN WIRE
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM (NEC ART 250, PART H)
GROUND
CLAMP
ELECTRIC SERVICE
EQUIPMENT
NEC-NATIONAL ELECTRICAL CODE
S2898A
J3U70101C(E)P02-10
15/06/2005, 4:10 PM
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