3
Antenna grounding
If an outside antenna is connected to the receiver, make sure the
antenna system is grounded so as to provide protection against volt-
age surges and built up of static charges.
Section 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 connectors, location of antenna dis-
charge-unit, connection to grounding electrodes, and requirements
for the grounding electrode. See DIAGRAM TO LEFT.
Important Safety Notes
If you do not feel comfortable or competent to install this antenna we
recommend that you seek the assistance of a qualified professional
antenna installer.
Read the instructions for this device thoroughly before
attempting installation.
The installation or dismantling of any antenna near power lines is
dangerous. Each year hundreds of people are killed or injured while
attempting to install or service antennas. For your safety and proper
antenna installation, read and follow all safety precautions.
Outdoor antennas and lead-in conductors from antenna to a building
should not cross over open conductors of electric light or power
circuits. They should be kept away from all circuits to avoid the
possibility of accidental contact.
Each conductor of a lead-in from an outdoor antenna should be con-
nected with an antenna discharge unit. Antenna discharge units (or
Lightning Arrestors) should be located outside the building between
the point of entrance or the lead-in and the TV, and as near as practi-
cal to the entrance of conductors to the building.
Choose an installation site for safety as well as performance.
All electric power lines, cable lines and telephone lines look alike.To
be safe, assume ANY overhead line can kill you.
Do not place an antenna where it could potentially fall on to,or blow
into a power line. If in doubt call your electric provider. Let them
review your site.
POWER SERVICE
GROUNDING ELECTRODE
SYSTEM (NEC ART250, PART H)
GROUNDING
CONDUCTORS
(NEC SECTION
810-21)
ELECTRIC
SERVICE
EQUIPMENT
GROUND CLAMPS
GROUND CLAMP
ANTENNA
DISCHARGE UNIT*
(NEC SECTION
810-20)
ANTENNA
LEAD-IN WIRE
EN
Safety Instructions
IMPORTANT
READ
BEFORE
INSTALLATION
Example of Antenna Grounding as per NEC – National Electrical Code
* Antenna Discharge Unit is not required if lead in conductors are enclosed
in a continuous metallic shield that is permanently and effectively grounded.
