Hitachi LE50A6R9 Owner's Manual

ANTENNA 

DISCHARGE UNIT 

(NEC SECTION 810-20)

ANTENNA 

LEAD IN WIRE

GROUNDING CONDUCTORS

(NEC SECTION 810-21)

GROUND CLAMPS

POWER SERVICE GROUNDING 

ELECTRODE SYSTEM

(NEC ART 250, PART H)

GROUND

CLAMP

ELECTRIC SERVICE 

EQUIPMENT

NEC-NATIONAL 

ELECTRICAL CODE

S2898A

EXAMPLE OF ANTENNA GROUNDING AS PER THE

 NATIONAL ELECTRICAL CODE

IMPORTANT SAFETY INSTRUCTIONS 

Moisture will form in the operating section of the unit if the unit is brought from cool 

surroundings into a warm room or if the temperature of the room rises suddenly. When 

this happens, unit's performance will be impaired. To prevent this, let the unit stand in its 

new surroundings for about an hour before switching it on, or make sure that the room 

temperature rises gradually.

Condensation may also form during the summer if the unit is exposed to the breeze from an 

air conditioner. In such cases, change the location of the unit.

15)  Apparatus should not be exposed to dripping or splashing, and objects filled with 

liquids, such as vases, should not be placed on the apparatus.

16)  An outside antenna system should not be located in the vicinity of overhead power 

lines or other electric light or power circuits, or where it can fall into such power lines or 

circuits. When installing an outside antenna system, extreme care should be taken to 

keep from touching such power lines or circuits, as contact with them might be fatal.

17)  Do not overload wall outlets and extension cords, as this can result in a risk of fire or 

electric shock.

18)  Do not push objects through any openings in this unit, as they may touch dangerous 

voltage points or short out parts that could result in fire or electric shock. Never spill or 

spray any type of liquid into the unit.

19)  If an outside antenna or cable 

system is connected to the unit, 

be sure the antenna or cable 

system is grounded to provide 

some protection against voltage 

surges and built-up static 

charges, Section 810 of the 

National Electrical Code, ANSI/

NFPA 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 

grounding electrode.

20)  When replacement parts are required, be sure the service technician uses 

replacement parts specified by the manufacturer or those that have the same 

characteristics as the original part.

 

Unauthorized substitutions may result in fire, electric shock or other hazards.

21)  Upon completion of any service or repairs to this unit, ask the service technician to 

perform safety checks to determine that the unit is in proper operating condition.

22)  When you connect the product to other equipment, turn off the power and unplug all of 

the equipment from the wall outlet. Failure to do so may cause an electric shock and 

serious personal injury. Read the owner's manual of the other equipment carefully and 

follow the instructions when making any connections.

23)  Do not allow the product to output distorted sound for an extended period of time. It 

may cause speaker overheating and fire.

24)  This reminder is provided to call the cable TV system installer’s attention to Article 

820-40 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.

25)  The mains plug is used as the disconnect and shall remain readily operable.