JBL S7150 PRECAUTIONS1.0, c.The product has been exposed to rain or, the enclosure damaged

Figure-1

Example of Antenna Grounding as per National Electrical Code

17.Outdoor Antenna Grounding – If an outside antenna is connected to the receiver, be sure the antenna system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard 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 grounding electrode (See Figure 1).

18.Damage Requiring Service – The product should be serviced by qualified service personnel when:

a.The power supply or the plug has been damaged; or

b.Objects have fallen on, or liquid has been spilled into, the product; or

c.The product has been exposed to rain; or

PRECAUTIONS1.0

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)

d.The product does not appear to operate normally or exhibits a marked change in performance; or

e.The product has been dropped, or

the enclosure damaged.

19.Servicing – The user should not attempt to service the product beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.

Note to CATV system installer:

This reminder is provided to call the CATV system installer’s attention to Article 820-22 of the NEC that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical.

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