Antenna Information; Outdoor Antenna Grounding - NAD C422 Owner's Manual

ANTENNA INFORMATION

If an indoor antenna is used (either built into the set or installed
separately), never allow any part of the antenna to touch the metal parts
of other electrical appliances such as a lamp, TV set etc.
CAUTION POWER LINES
Any outdoor antenna must be located away from all power lines.

OUTDOOR ANTENNA GROUNDING

If an outside antenna is connected to your tuner or tunerpreamplifier, be
sure the antenna system is grounded so as to provide some protection
against voltage surges and built-up static charges. Article 810 of the
National Electrical Code, ANSI/NFPA No. 70-1984, 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 grounding electrode.
a. Use No. 10 AWG (5.3mm2) copper, No. 8 AWG (8.4mm2) aluminium,
No. 17 AWG (1.0mm2) copper-clad steel or bronze wire, or larger, as a
ground wire.
b. Secure antenna lead-in and ground wires to house with stand-off
insulators spaced from 4-6 feet (1.22 - 1.83 m) apart.
c. Mount antenna discharge unit as close as possible to where leadin
enters house.
d. Use jumper wire not smaller than No.6 AWG (13.3mm2) copper, or
the equivalent, when a separate antenna-grounding electrode is used.
see NEC Section 810-21 (j).
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL
CODE INSTRUCTIONS CONTAINED IN ARTICLE 810 - RADIO AND
TELEVISION EQUIPMENT.
NOTE TO CATV SYSTEM INSTALLER: This reminder is provided to call
the CATV system installer's attention to Article 820-40 of the National
Electrica l Code that provides guidelines for proper grounding and,
in particular, specifies that the ground cable ground shall be connected
to the grounding system of the building, as close to the point of cable
entry as practical.
OWNER'S RECORD
For your convenience, record the model number and serial number (you
will find them on the rear of your set) in the space provided below. Please
refer to them when you contact your dealer in case of difficulty.
Model No. :
Serial No. :
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