18.
Use proper power sources - Plug the product into
a proper power source, as described
in
the operating
instructions or as marked on the product.
19.
Avoid power lines - Use extreme care when
installing
an
outside antenna system to keep from
touching power lines
or
circuits, as contact with
them may be fatal. Do not install external antennas
near overhead power lines
or
other electric light
or
power circuits, nor where an antenna can fall into
such circuits
or
power
lines.
20.
Ground all outdoor antennas - If an external
antenna or cable system is connected to this
product,
be
sure the antenna or cable system is
grounded. This will provide some protection against
voltage surges and built-up static charges.
Section 810
of
the National Electrical Code ANSI/
NFPA No. 70 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
ground electrode. Refer
to
the antenna grounding
illustration on this page.
Antenna
grounding
Example of antenna grounding
as
per National Electrical
Code, ANSI/NFPA
70.
Ground clamp--II---_JI' ffl_----l--Antenna discharge unit
(NEG
Section 810-20)
/4,---,,L--Grounding conductors
(NEG
Section 810-21)
Ground clamps
...
---Power
service grounding
electrode system
(NEG
ART 250, Part
H)
Note
to
CATV
system
installer
This reminder is provided to call the
CATV
system
installer's attention
to
Article 820-40 of the
NEC
(of
USA)
that provides guidelines for proper grounding.
In
particu-
lar,
it specifies that the cable ground shall be connected
to the grounding system of the building, as close to the
point of cable entry
as
is practical.
-B05~
Better
sound
through
research®
©2001
Bose Corporation,
The
Mountain,
Framingham,
MA
01701-9168
USA
255805
AM
Rev.OO
JN1
0494
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