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12. Outdoor Antenna Grounding—If an outside
antenna or cable system is connected to the product,
be sure the antenna or cable system is grounded so as
to provide some protection against voltage surges
and built-up static charges. Article 810 of the
National Electrical Code, ANSI/NFPA No. 70
(Section 54 of Canadian Electrical Code, Part 1)
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. See example below as per National
Electrical Code, ANSI/NFPA 70.
Example of Antenna Grounding
13. Power Lines—An outside antenna system should not
be located in the vicinity of overhead power lines,
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 or approaching such
power lines or circuits as contact with them might be
fatal. Installing an outdoor antenna can be hazardous
and should be left to a professional antenna installer.
Use
14. Cleaning—Unplug this product from the wall outlet
before cleaning. Do not use liquid cleaners or
aerosol cleaners. Use a damp cloth for cleaning.
15. Object and Liquid Entry—Never push objects of
any kind into this product through openings as they
may touch dangerous voltage points or “short-out”
parts that could result in a fire or electric shock.
Never spill liquid of any kind on the product.
16. Lightning—For added protection for this product
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 product due
to lightning and power line surges.
Service
17. Servicing—Do not attempt to service this product
yourself as opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all
servicing to qualified service personnel.
18. Conditions Requiring Service—Unplug this
product from the wall outlet and refer servicing to
qualified service personnel under the following
conditions.
A. When the power-supply cord or plug is damaged.
B. If liquid has been spilled, or objects have fallen
into the product.
C. If the product has been exposed to rain or water.
D. If the product does not operate normally by
following the operating instructions, adjust only
those controls that are covered by the operating
instructions. Improper adjustment of other
controls may result in damage and will often
require extensive work by a qualified technician
to restore the product to its normal operation.
E. If the product has been dropped in any way.
F. When the product exhibits a distinct change in
performance—this indicates a need for service.
19. Replacement Parts—When replacement parts are
required, have the service technician verify that the
replacements he uses have the same safety
characteristics as the original parts. Use of
replacements specified by the product manufacturer
can prevent fire, electric shock, or other hazards.
20. Safety Check—Upon completion of any service or
repairs to this product, ask the service technician to
perform safety checks recommended by the
manufacturer to determine that the product is in safe
operating condition.
21. Wall or Ceiling Mounting—The product should be
mounted to a wall or ceiling only as recommended
by the manufacturer.
22. Heat—The product should be situated away from
heat sources such as radiators, heat registers, stoves,
or other products (including amplifiers) that produce
heat.
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IMPORTANT SAFEGUARDS (continued)
ANTENNA
LEAD IN
WIRE
GROUND CLAMP
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
ELECTRIC SERVICE
EQUIPMENT
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
Note to Cable TV Installer
This reminder is provided to call your attention to
Article 820-40 of the National Electrical Code
(Section 54 of Canadian Electrical Code, Part I), that
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 cable entry as practical.