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Before applying pow er
18. Pow er lines – An outside antenna system should not
be located in the vicinity of overhead pow er lines or
other electric light or pow er circuits, or w here it can fall
into such pow er lines or circuits. When installing an
outside antenna system, extreme care should be taken
to keep from touching such pow er lines or circuits as
contact w ith them might be fatal.
19. A C o u t l e t s – D o n o t c o n n e c t o t h e r au d i o
equipm ent w it h a pow er consum pt ion larger t han
t hat specif ied t o t he AC out let on t he rear panel.
Never connect ot her elect rical appliances, such
as an iron or t oast er, t o it t o prevent f ire or elect ric
shock.
20. Overloading – Do not overload w all outlets, extension
cords, or integral convenience receptacles as this can
result in a risk of fire or electric shock.
21. At t achm ent – Do not use at t achm ent s not
recommended by the appliance manufacturer as they
may cause hazards.
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 parts.
Unauthorized substitutions may result in fire, electric
shock, or other hazards.
23. Safety check – Upon completion of any service or
repairs to this appliance, ask the service technician to
perform safety checks to determine that the appliance
is in proper operating condition.
15. Dam age requiring service – The appliance should
be serviced by qualif ied service personnel w hen:
A. The pow er-supply cord or t he plug has been
dam aged.
B. Object s have f allen, or liquid has been spilled int o
t he appliance.
C. The appliance has been exposed t o rain or w at er.
D. The appliance does not appear t o operat e norm ally
by follow ing the instruction manual. Adjust only those
controls that are covered by the instruction manual as
an improper adjustment of other controls may result in
damage and w ill often require extensive w ork by a
qualified technician to restore the appliance to its normal
operation.
E. The appliance has been dropped, or t he enclosure
dam aged.
F. The appliance exhibits a marked change in performance.
16. Servicing – The user should not at t em pt t o
service t he appliance beyond t hat described in t he
inst ruct ion m anual. All ot her servicing should be
ref erred t o qualif ied service personnel.
17. Out door ant enna grounding – If an out side
ant enna is connect ed t o t he appliance, be sure t he
ant enna syst em is grounded so as t o provide
som e prot ect ion against volt age surges and built
up st at ic charges. Art icle 810 of t he Nat ional
Elect rical Code ANSI/NFPA 70, provides
inf orm at ion w it h respect t o proper grounding of
t he m ast and support ing st ruct ure, grounding of
t he lead-in w ire t o an ant enna discharge unit , size
of grounding conduct ors, locat ion of ant enna
d i s c h ar g e u n i t , c o n n e c t i o n t o g r o u n d i n g
elect rodes, and requirem ent s f or t he grounding
elect rode. See Figure.
Caution : Read this page carefully to ensure safe
operation.
Notes:
1. Item 3 is not required except for grounded or polarized
equipment.
2. Item 17 and 18 are not required except for units provided w ith
antenna terminals.
3. Item 17 complies w ith UL in the U.S.A.
EXAM PLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
GROUND CLAM P
ANTENNA
LEAD IN WIRE
GROUND
CLAM PS
ELECTRIC
SERVICE
EQUIPM ENT
NEC – NATIONAL ELECTRICAL CODE
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
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