4
810 of the National Electrical Code,
ANSI/NFPA No. 70-1984 (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, connection to grounding
electrodes, and requirements for the
grounding electrode. See example as shown.
14 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.
15 Lightning
For added protection for this unit 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 unit due to lightning and
power line surges.
16 Disc Tray
Keep your fingers well clear of the disc as it
is closing. It may cause serious personal
injury.
17 Overloading
Do not overload wall outlets or extension
cords as this can result in a risk of fire or
electric shock.
18 Object and Liquid Entry
Never push objects of any kind into this unit
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 unit.
19 Burden
Do not place a heavy object on or step on
the product. The object may fall, causing
serious personal injury and serious damage
to the product.
20 Disc
Do not use a cracked, deformed or repaired
disc. These discs are easily broken and may
cause serious personal injury and product
malfunction.
21 Servicing
Do not attempt to service this unit yourself as
opening or removing covers may expose you
to dangerous voltage or other hazards. Refer
all servicing to qualified service personnel.
22 Damage Requiring Service
Unplug this unit 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 unit.
C If the unit has been exposed to rain or water.
D If the unit 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 unit to its
normal operation.
E If the unit has been dropped or the cabinet
has been damaged.
F When the unit exhibits a distinct change in
performance-this indicates a need for
service.
23 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 unit
manufacturer can prevent fire, electric
shock, or other hazards.
24 Safety Check
Upon completion of any service or repairs to
this unit, ask the service technician to
perform safety checks recommended by the
manufacturer to determine that the unit is in
safe operating condition.
25 Wall or Ceiling Mounting
The product should be mounted to a wall or
ceiling only as recommended by the
manufacturer.
26 Heat
The product should be situated away from
heat sources such as radiators, heat registers,
stoves, or other products (including
amplifiers) that produce heat.
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
ANTENNA LEAD
IN WIRE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250 PART H)
GROUND CLAMP
ELECTRIC
SERVICE
EQUIPMENT
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
EXAMPLE OF ANTENNA
GROUNDING
NEC - NATIONAL ELECTRICAL CODE
I
MPORTANT
S
AFEGUARDS
DCSB83D1N-PS외15종 04.5.30 11:47 PM 페이지4
