User Manual

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Important Safety Instructions
Antenna grounding
Example of antenna grounding as per National Electrical
Code,ANSI/NFPA70.
Note to CATV system installer
ThisreminderisprovidedtocalltheCATVsystem
installer’s attention to Article 820-40 of the NEC (of USA)
that provides guidelines for proper grounding. In particu-
lar, it specifies that the cable ground shall be connected
to the grounding system of the building, as close to the
point of cable entry as is practical.
18. Use proper power sources – Plug the product into
a proper power source, as described in the operating
instructions or as marked on the product.
19. Avoid power lines – Use extreme care when
installing an outside antenna system to keep from
touching power lines or circuits, as contact with
them may be fatal. Do not install external antennas
near overhead power lines or other electric light or
power circuits, nor where an antenna can fall into
such circuits or power lines.
20. Ground all outdoor antennas – If an external
antenna or cable system is connected to this
product, be sure the antenna or cable system is
grounded. This will provide some protection against
voltage surges and built-up static charges.
 Section810oftheNationalElectricalCodeANSI/
 NFPANo.70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
 groundelectrode.Refertotheantennagrounding
illustration on this page.
Antenna lead in wire
Antenna discharge unit
(NEC Section 810-20)
Grounding conductors
(NEC Section 810-21)
Power service grounding
electrode system
(NEC ART 250, Part H)
Ground clamps
Ground clamp
Electric service
equipment
©2007BoseCorporation,TheMountain,
Framingham,MA01701-9168USA
255805AMRev.03