~---
Antenna
lead
in
wire
Antenna discharge unit
FIl+----+--(NEC Section 810-20)
k---?~-Grounding
conductors
h--7L.",L---(NEC
Section 810-21)
Ground clamps
:----Power
service grounding
electrode system
(NEC
ART
250,
Part
H)
Ground clamp
--#--+JI'
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, ascontact with
them may be fatal. Do not install external antennas
near overhead
power
lines
or
otherelectric light
or
power
circuits, nor where an antenna can fall into
such circuits
or
power lines.
20.
Ground all outdoor antennas- Ifan 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 forthe
ground electrode. Refer
to
the antenna grounding
illustration on this page.
--BOS~
Better
sound
through
researeh®
©2DD1
Bose
Corporation,
The
Mountain,
Framingham,
MA
01701-9168
USA
255805
AM
Rev.DO
JN10494
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