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Philips SDV2940 

Indoor/Outdoor UHF/VHF Television antenna

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 discharge-unit, connec-

tion 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 build-

ing should not cross over open conductors of electric light or power

circuits.They should be kept away from all circuits to avoid the pos-

sibility 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 prac-

tical 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.

Outdoor antennas should be grounded with an approved 

lighting arresting device. Local codes may apply. Use 8 AWG or larger

ground wire.

Safety Instructions

* Antenna Discharge Unit is not required

if lead in conductors are enclosed in a

continuous metallic shield that is 

permanently and effectively grounded.

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

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