7
• Take special care to prevent the battery from being shorted by misconnection of the battery cable.
If the short occurs, the unit may fail.
Follow the instructions in this section for safe and secure connection.
• Be sure to switch off the system power before battery connection. For the procedure, refer to
• After completing the battery connection, be sure to attach a terminal cover onto each battery
terminal to prevent shorts between positive and negative terminals.
WARNING
[Cable end treatment]
To secure the connection between the battery terminal and cable, be sure to use the cable of specified
diameter and treat its end as follows.
Stripped length: 30 mm
±
5 mm
Cross sectional area: 16 – 50 mm
2
Usable cable diameter: AWG 6 – AWG 0 (AWG 1/0)
(Line resistance should be within 4 mΩ in total.)
[Cautions on cable connection to the battery terminal]
• Before connecting the battery cable to the battery
terminal, be sure to fully open the cable clamp by
turning the terminal screw counterclockwise.
Battery terminal
Terminal screw
Cable clamp
Fully open.
Too narrow to
clamp the cable
Incorrect
• Insert the battery cable into the correct position in the battery terminal referring to the terminal's cross
sectional diagrams below.
Correct position of the cable insertion
Incorrect position of the cable insertion
Wrong insertion position of the cable or a forked
cable insertion causes poor contact or insufficient
connection tightness, making the cable come off
to possibly cause short-circuit accident.
Cable conductor
Cable clamp
4. BATTERY INSTALLATION
