I--<:P.~--
Antenna
lead
in
wire
Antenna discharge unit
R1~--I--(N
EG
Section
81
0-
20)
~",e---Grounding
conductors
(NEG
Section 810-21)
Ground clamps
='--Power
service grounding
electrode system
(NEG
ART
250,
Part
H)
Ground clamp
--H-~'
Antenna
grounding
Example
of
antenna grounding
as
per National Electrical
Code, ANSI/NFPA
70.
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.
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 ANSII
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.
....BIIS~
Better
sound
through
research®
©2001 Bose Corporation,
The Mountain, Framingham,
MA
01701-9168 USA
255805 AM
Rev.OO
JN10494
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