Operator`s manual
2003 - Magnum Energy, Inc.
12
2. INSTALLATION
3. Installation, continued
Battery Cables and Sizing
Select the correct battery cables for the installation from the table. It is impor-
tant to use the correct cable to achieve maximum efficiency from the system and
reduce fire hazards associated with overheated cables. Undersized cables can also
lower the inverters peak output voltage as well as reduce its surge power capability.
Long cable runs also reduce efficiency due to resistance in the cable. Always keep
your cable runs a short as practical.
Battery cables must be color coded with colored tape or heat shrink tubing: RED
for positive (+); BLACK for negative (-); and GREEN for DC ground.
The cables must have soldered and crimped lugs, crimped copper compression
lugs, or aluminum mechanical lugs. Soldered connections alone are not acceptable
for this application.
DC Wiring
Refer to the safety information at the beginning of the manual before proceeding. DC
wires and cables should be tied together with wire ties or electrical tape approxi-
mately every 6 inches.
WARNING: De-energize all sources of power including batteries (DC), shore
power (AC), and AC generator (if applicable).
CAUTION: Inverter is NOT polarity protected. Verify proper polarity BEFORE
connecting the battery cables.
NOTE: DO NOT connect the battery cables to the inverter until all wiring is complete
and the correct DC voltage and polarity has been verified.
NOTE: Make sure cables have a smooth bend radius and do not become kinked.
Place long cable runs in conduit and follow existing wire runs where possible.
DC Grounding
Route a grounding cable (GREEN) from the inverters ground lug to a dedicated
vehicle ground.
Negative Cable
Route a negative cable (BLACK) from the house battery bank (or dedicated bat-
tery compartment) to the inverters negative terminal
Positive Cable
Route a positive cable (RED) from the house battery bank (or dedicated battery
compartment) to the Fuse Block assembly (DC Disconnect). The DC disconnect is
usually located next to or near the batteries. DO NOT connect the positive cable to
the batteries at this time.
Route a positive cable (RED) from the Fuse Block assembly (DC Disconnect) to
the
inverters positive terminal DO NOT connect the positive cable to the inverter at this
time.