Hitachi Koki USA CW 20 Manuale Utente

–  6  – 

or a #14 wire with a 15 A time-lag fuse. 

NOTE: When 

using an extension cord on a circuit with a #14 wire, the 

extension cord must not exceed 25 feet in length. Before 

connecting the motor to the power line, make sure the 

switch is in the OFF (O) position and the electric current 

is rated the same as the current stamped on the motor 

nameplate. Running at a lower voltage will damage the 

motor. This tool is intended for use on a circuit that has 

a receptacle like the one illustrated in Fig. 1.

Fig. 1 shows a three-pronged electrical plug and 

receptacle that has a grounding conductor. If a properly 

grounded receptacle is not available, an adapter (Fig. 2) 

can be used to temporarily connect this plug to a two-

contact grounded receptacle. The adapter (Fig. 2) has a 

rigid lug extending from it that MUST be connected to a 

permanent earth ground, such as a properly grounded 

receptacle box. 

In all cases, make certain the receptacle is properly 

grounded. If you are not sure, have a qualified 

electrician check the receptacle.

Fig. 1       

   

                             

(When using 120 volts only)

More Than

           

Not More Than

       25ft.    50ft.     100ft.    150ft.          

0                         6

18       16        16         14     

6                        10  

18       16        14         12     

10                      12

16       16        14         12     

12                      16

14       12       

Not Recommended

     

BREAKDOWN, grounding provides a path of least 

resistance for electric currents and reduces the risk of 

electric shock. This tool is equipped with an electrical 

cord that has an equipment-grounding conductor 

and a grounding plug. The plug must be plugged 

into a matching receptacle that is properly installed 

and grounded in accordance with all local codes and 

ordinances.

DO NOT MODIFY THE PLUG PROVIDED. If it will not 

fit the receptacle, have the proper receptacle installed 

by a qualified electrician.

IMPROPER CONNECTION of the equipment grounding 

conductor can result in risk of electric shock. The 

conductor with the green insulation (with or without 

yellow stripes) is the equipment grounding conductor. 

If repair or replacement of the electrical cord or plug is 

necessary, do not connect the equipment grounding 

conductor to a live terminal.

CHECK with a qualified electrician or service person 

if you do not completely understand the grounding 

instructions, or if you are not certain the tool is properly 

grounded.

USE only three-wire extension cords that have three-

pronged grounding plugs with three-pole receptacles 

that accept the tool’s plug. Repair or replace damaged 

or worn cords immediately.

USE THE PROPER EXTENSION CORD. Make sure 

your extension cord is in good condition. Use an 

extension cord heavy enough to carry the current your 

product will draw. An undersized cord will cause a drop 

in line voltage resulting in loss of power, 

overheating and burning out of the motor. The table on 

the right shows the correct size to use depending on 

cord length and nameplate ampere rating. If in doubt, 

use the next heavier gauge. The smaller the gauge 

number, the heavier the cord.

Make sure your extension cord is properly wired and in 

good condition. Always replace a damaged extension 

cord or have it repaired by a qualified technician before 

using it. Protect your extension cords from sharp 

objects, excessive heat and damp or wet areas. 

Use a separate electrical circuit for your tool. This circuit 

must not be less than #12 wire with a 20 A time-lag fuse 

Three-Pronged Plug

Grounding Prong

Properly Grounded

Three-Pronged Receptacle

Grounding Lug

Make sure this is 

connected to a 

known ground.

Two-Pronged 

Receptacle

Adapter