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12
4) Ground the 75 ohm Grounding Block:
Connect an 8 AWG aluminum or 10 AWG grounding wire
to a screw terminal provided on the grounding block.
Connect the other end of the wire to an acceptable
building ground location.
Examples of acceptable building grounding locations are:
• The building or structure grounding electrode system
as covered in 250.50 in the NEC.
• Grounded interior metal water piping system, within
5ft. from its point of entrance to the building.
• Grounded, nonexible metallic power service raceway.
• Service equipment enclosure, the grounding electrode
conductor or the grounding electrode conductor metal
enclosure of the power service.
• An 8ft. grounding rod driven into the ground can be
used as long as it is connected to the central building
ground by a 6 AWG or heavier bonding wire.
Double check all connections after installation is complete.
Ensure there are good electrical connections of your
grounding wires and coax cables. See Fig. 2 below for an
example of a properly grounded antenna installation.
Example of Antenna Grounding
as per NEC - National Electrical Code
ELECTRIC SERVICE METER PANEL
POWER SERVICE GROUNDING ELECTRODE
SYSTEM (NEC ART 250. PART H)
GROUNDING CONDUCTOR
(NEC SECTION 810-21 )
GROUND CLAMP
75 OHM GROUNDING BLOCK
(NEC SECTION 810-20)
ANTENNA COAX
RAIN DRIP LOOP FOR THE COAX TO TV
Fig. 2
If you are unsure how to properly ground your antenna
installation, contact a professional installer in your area.
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