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11
ENGLISH
Providing Lightning Protection for
the Antenna
1. Mount lightning arrestor or 75 ohm grounding block as close as
possible to where lead-in enters house.
2. Ground wires for both mast and lead-in should be copper or
aluminum wire, number 8 or larger.
3. Lead-in wire from antenna to lightning arrestor or 75 ohm grounding
block and mast ground wire should be secured to house with stand-off
insulators, spaced from four to six feet apart.
4. In the case of a “ground up” antenna installation, it may not be
necessary to ground the mast if the mast extends four or more feet
into the earth. Consult your TV service man for proper depth in your
area.
Antenna
Lead-In Wire
Ground
Clamp
Electric
Service
Equipment
Antenna
Discharge Unit
(NEC Section 810-20)
Power Service Grounding
Electrode System
(NEC Art 250, Part H)
Ground
Clamps
Grounding Conductors
(NEC Section 810-21)
NEC - National Electrical Code
Example of antenna grounding as per
National Electrical Code, ANSI/NFPA 70
(May substitute a 75 ohm
Coax Grounding Block)
Rain Drip Loop On
Lead-In To TV