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Installation
975-0171-01-01 27
Connecting the DC Cables to the Inverter/Charger
To connect the DC cables:
1. Route the DC cables from the battery bank to the inverter/charger. Observe
the “Guidelines for Routing the DC Cables” on page 26.
2. Install a DC fuse and disconnect switch or a DC circuit breaker between the
inverter/charger and the battery. It must be installed in the positive side of the
DC circuit, as close as possible to the battery.
This protects your battery and wiring in case of accidental shorting. See
Table 3 on page 14 for required fuse or breaker size.
3. Open the DC disconnect switch or turn off the DC circuit breaker.
4. Connect one connector on the POSITIVE (+) cable to the POSITIVE DC
terminal on the inverter/charger, as shown in Figure 6. The connector goes on
first, then the flat washer (steel), lock washer (steel), and 3/8" bolt (brass).
5. Connect the other connector to the POSITIVE (+) terminal on the fuse or
breaker. Observe polarity carefully while completing the installation.
Use a wrench to tighten the bolt to a torque of 15–16 ft-lbs (20.4–21.7 Nm) at
the inverter/charger end. Observe the fuseholder or breaker manufacturer’s
recommendation at the other end.
6. Connect one connector on the NEGATIVE (–) cable to the NEGATIVE (–)
DC terminal on the inverter/charger, as shown in Figure 6. The connector
goes on first, then the flat washer (steel), lock washer (steel), and 3/8" bolt
(brass).
WARNING: Fire hazard
Use only appropriately sized copper cable. Loose connections or improper connections
will overheat. Make sure the bolts supplied by Xantrex on the inverter/charger are
tightened to a torque of 15–16 ft-lbs (20.4–21.7 Nm). Torque all other connections to the
manufacturer’s specifications. Make sure the DC cable, washers, and bolt are assembled
in the order shown in Figure 6.
CAUTION: Reverse polarity damage
Before making the final DC connection or closing the DC breaker or disconnect, check
cable polarity at both the battery and the inverter/charger. Positive (+) must be connected
to positive (+). Negative (–) must be connected to negative (–).