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 12. 
Grounding or Polarization – This product 
m a y   b e   e q u i p p e d   w i t h   a   p o l a r i z e d 
alternatingcurrent line plug (a plug having 
one blade wider than the other). This plug will 
fi t 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 fi t, contact 
your electrician to replace your obsolete 
outlet. Do not defeat the safety purpose of 
the polarized plug.
AC POLARIZED PLUG
 13.  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 product.
 14. 
Protective Attachment Plug – The product 
is equipped with an attachment plug having 
overload protection. This is a safety feature. 
See Instruction Manual for replacement or 
resetting of protective device. If replacement 
of the plug is required, be sure the service 
technician has used a replacement plug 
specified by the manufacturer that has the 
same overload protection as the original plug.
 15. 
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 antennadischarge unit, connection to 
grounding electrodes, and requirements for 
the grounding electrode. See Figure 1.
 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.
 17. 
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.
 18.  Overloading – Do not overload wall outlets, 
extension cords, or integral convenience 
receptacles as this can result in a risk of fi re 
or electric shock.
 19.  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 fi re or 
electric shock. Never spill liquid of any kind 
on the product.
 20. 
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 
qualifi ed service personnel.
 21. 
Damage Requiring Service – Unplug this 
p r o d u c t  f r o m  t h e  w a l l  o u t l e t  a n d  r e f e r 
servicing to qualifi ed 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 as an improper 
adjustment of other controls may result in 
damage and will often require extensive 
work by a qualifi ed technician to restore the 
product to its normal operation.
  e.  If the product has been dropped or damaged 
in any way, and
  f.  When the product exhibits a distinct change 
in performance this indicates a need for 
service.
 22. 
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 fi re, 
electric shock, or other hazards.
 23. 
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.
 24.  Wall or Ceiling Mounting – The product 
should be mounted to a wall or ceiling only 
as recommended by the manufacturer.
 25.  Heat – The product should be situated away 
from heat sources such as radiators, heat 
registers, stoves, or other products (including 
amplifi ers) that produce heat.
FIGURE 1
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE, ANSI/NFPA 70
This Class B digital apparatus complies with Canadian 
ICES-003.
Cet appareil numérique de la Classe B est conforme 
à la norme NMB-003 du Canada.
NEC - NATIONAL ELECTRICAL CODE
ANTENNA
LEAD IN WIRE
GROUND
CLAMP
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
ELECTRIC
SERVICE
EQUIPMENT
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)