Airpax Dimensions MIL-24X26UVQ Owner's Manual - 3.3 Inverter Wiring
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3.3 Inverter Wiring
Reference figure 7, page 16 DC wiring and figure 8, page 17 AC wiring diagram.
3.3.1 Grounding: Connect an 8 gauge copper wire between the bonding lug located
at the right side of the chassis on the inverter and the earth grounding system of the
vehicle chassis. See figure 2, item (f) page 7.
3.3.2 Battery-to-Inverter Cable Assembly
An initial spark may result when connecting the final battery wire to the inverter
due to charging of the internal input capacitors.
Connecting the inverter with the DC polarity reversed to the battery will cause
damage that is not covered under the warranty.
a) Refer to Figure 7: DC wiring diagram.
b) Open the inverter field-wiring compartment to access the DC input lugs.
c) Unscrew the DC input lug POS (+) and NEG (-) 3/8” Allen screws.
d) Remove the fuse from the fuseholder for cable installation.
e) Remove 1 inch of insulation from the un-terminated ends of the red and black cables.
f) Insert the stripped end of the red wire into the DC input lug labeled POS (+) and the
stripped end of the black wire into the DC input lug labeled NEG (-). Tighten the 3/8”
Allen screws to 23 Ft. Lbs.
g) Tighten the cover DC cable strain relief screws to 1 Ft. Lb.
h) Connect the end of the short red cable to a POS (+) battery post.
i) Connect the terminated end of the black cable (neg. return cable) directly to a battery
NEG (-) post (DO NOT connect to the chassis).
j) Install the in-line fuse in the fuseholder that is within 18” of the positive post of the
battery bank (a one-time spark will occur when this final DC connection is made). To
determine the fuse size, refer to the Appendix.
3.3.3 Auxiliary Battery-to-Alternator or OEM Battery Cable Assembly
Do not use the vehicle chassis as a return path. Use the same wire gauge as the
positive cable to complete the connection.
a) Turn vehicle engine off.
b) Disconnect the cable from the vehicle battery negative post.
c) Remove the in-line fuse from the fuse holder located on the red or positive (+)
assembly wire.
d) Bolt the cable ends with ring terminals positive (+) and negative (-) to the vehicle
alternator output.
e) Using washers and nuts, place the assembly wire ring terminals to the appropriate
positive (+) and negative (-) auxiliary battery post.
f) Reinstall the in-line fuse into the fuse holder.
g) Reconnect the cable to the vehicle battery negative post.
h) To determine the fuse size, refer to the Appendix.