Bose Wave music system Руководство пользователя - Страница 4

Important Safety Instructions

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 informaiton 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.

Ground clamp

Electric service

equipment

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 particular, 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.

Antenna lead in wire

Antenna discharge unit

(NEC Section 810-20)

Grounding conductors

(NEC Section 810-21)

Ground clamps

Power service grounding

electrode system

(NEC ART 250, Part H)