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3.0 Installation
DC Wiring (continued)
Battery Installation
WARNING: ENSURE THAT
THE INVERTER IS OFF
BEFORE CONNECTING OR
DISCONNECTING THE
BATTERY CABLES AND
THAT ALL AC POWER IS
DISCONNECTED FROM THE
INVERTER'S INPUTS.
CAUTION: Verify the DC
disconnect device is
switched OFF.
NOTE: Xantrex DC disconnect boxes
contain a NEGATIVE DC block
which allows connection
between the battery and
inverter's negative terminals.
The DC NEGATIVE block also
provides the negative/ground
bonding for the DC system.
NOTE: For residential installations,
NEC requires that "DC
disconnects" have both
overcurrent protection and
a disconnect switch.
CAUTION: Do not put
anything between the
cable ring terminal and
the flat metal part of the
terminal. See Figure 3-7.
Overheating of the
terminal may occur. Do
not apply any type of
antioxidant paste until
after the battery cable
wiring is tightened. The
same applies for all DC
connections.
©2002 Xantrex Technology Inc. All Rights Reserved.
P/N 975-0026-01-01 Rev A 06/2002
1.
Connect the positive cable between the battery's positive terminal and the DC
disconnect/overcurrent protection device (torque to manufacture's
recommendations). The DC disconnect device should be located as close to
the batteries as possible.
2.
Connect a cable between the DC disconnect device and the inverter's
POSITIVE (+) terminal.
3.
Connect the negative cable between the battery's negative terminal (torque to
manufacture's recommendations) and the inverter's NEGATIVE (-) terminal.
4.
Ensure the correct polarity of the cables with a DC voltmeter (DVM).
5.
Use an insulated 1/2 inch wrench or socket to tighten the 5/16 SAE nuts to 10-
15 foot/lb for each inverter input terminal.
6.
Apply antioxidant paste to the battery, DC disconnect, and inverter's
terminals.
7.
Install the battery terminal connection covers (red for positive, black for
negative) over the inverter's DC terminals and secure with the screws and
washers provided.
Chassis
Grounding
Lug
#2/0 Copper Compression Lug
Battery Cable Connections
Do not place anything
between battery cable lug
and terminal surface.
Assemble exactly as shown.
#2/0 Aluminum Mechanical Lug
Figure 3-7
POSITIVE (+)
RED TERMINAL
NEGATIVE (-)
BLACK
TERMINAL
37
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