![background image](http://html.mh-extra.com/html/xantrex/xpower-400/xpower-400_owners-manual_881478019.webp)
14
Follow these steps to make a direct battery connection:
1. Place the inverter on a flat surface.
2. Make sure that the unit is off by verifying the digital display is off.
3. Connect the ring terminals on the DC cable clamps to the cabling
terminals on the unit. (The cabling terminals are shown in Figure
2.) Fasten the positive (red) ring terminal to the positive cabling
terminal, and then fasten the negative (black) ring terminal to the
negative cabling terminal.
4. Tighten the nut on each cabling terminal until it is snug. Do not
over-tighten.
CAUTION: Reverse polarity
Power connections of the 12 V DC battery to the inverter must be
positive to positive and negative to negative.
A reverse polarity connection (positive to negative) will blow a fuse in
the inverter and may permanently damage the unit. Damage caused by a
reverse polarity connection is not covered by your warranty.
CAUTION
Make sure you connect red to red and black to black, and make sure you
screw the nuts on tightly.