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POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
GROUND CLAMPS
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUND
CLAMP
Fig. A
NEC — NATIONAL ELECTRICAL CODE
ANTENNA
LEAD IN WIRE
ELECTRIC
SERVICE
EQUIPMENT
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 70, provides information
with regard 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 Figure A.
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.
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.
OVERLOADING — Do not overload
wall outlets, extension cords, or
integral convenience receptacles as
this can result in a risk of fire or
electric shock.
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.
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.
DAMAGE REQUIRING SERVICE —
Unplug this product from the wall
outlet and refer servicing to qualified
service personnel under the following
conditions:
• When the power-supply cord or plug is
damaged.
• If liquid has been spilled, or objects
have fallen into the product.
• If the product has been exposed to
rain or water.
• If the product does not operate
normally by following the operating
instructions. Adjust only those controls
that are covered by the operating
instructions as an 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.
• If the product has been dropped or
damaged in any way.
• When the product exhibits a distinct
change in performance — this
indicates a need for service.
REPLACEMENT PARTS — When
replacement parts are required, be
sure the service technician has used
replacement parts specified by the
manufacturer or have the same
characteristics as the original part.
Unauthorized substitutions may
result in fire, electric shock, or other
hazards.
SAFETY CHECK — Upon completion of
any service or repairs to this
product, ask the service technician
to perform safety checks to
determine that the product is in
proper operating condition.
WALL OR CEILING MOUNTING —
The product should not be mounted
to a wall or ceiling.
HEAT — The product should be
situated away from heat sources
such as radiators, heat registers,
stoves, or other products (including
amplifiers) that produce heat.