13.
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 contaGt 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
.mtennas
- 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 CodeANSI!
NFPA No. 70 provides information with respect
to
propergrounding
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.
I-G>+---
Antenna
lead
in
wire
Ground
clamp
--#-
....
J!'
Antenna
discharge
unit
tt1+--I--(NEC
Section
(310-20)
k--,,L--Grounding conductors
Electric
service
k-f7L---(NEC
Section 810-21)
_ equipment-l->4I'J,/#
----
Ground
clamps
=-"-----Power
service
grounding
electrode
system
(NEC
ART
250,
Part
1-1)
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.
©2001
Bose
Corporation,
The
Mountain,
Framingham,
MA
01701-9168
USA
255805
AM
Rev.OO
JN10494
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