Bose Companion 3 소유자 매뉴얼 - 페이지 18

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Bose Companion 3에 대해서도 마찬가지입니다: 소유자 매뉴얼 (40 페이지), 소유자 매뉴얼 (40 페이지), 서비스 매뉴얼 (30 페이지)

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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 grounding

Example of antenna grounding as per National Electrical

Code, ANSI/NFPA 70.

1----Cl>.4__--

Antenna lead in wire

Ground clamp

-......tI-_JI'

Ffl+----+_Antenna discharge unit

(NEC Section 810-20)

f+---,-r"---Grounding conductors

(NEC Section 810-21)

Ground clamps

=-Power service grounding

electrode system

(NEG ART

250, Part H)

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.

.....BOS~

Better sound through research®

The

Mountain, Framingham, MA

01701-9168 USA

255805 AM Rev.OO JN1 0494