Magnum Energy MSH-M Series - Manual (Page 36)

©
2013 Magnum Energy, Inc. Page 27
Installation
2.6.6 Connecting a Large DC Ground Wire
Some marine installations require the DC ground wire to be the same size or one size smaller
than the negative cable. Use the following steps to allow a larger ground wire to be connected.
1. Locate the DC ground terminal (Item 7, in
Figure 1-2).
2. Locate and remove the AC access cover plate
(Item 15, in Figure 1-3) on the side of the
inverter.
3. Within the AC wiring area, locate the hex nut
on the back side of the DC ground termi-
nal. After locating the hex nut, use a 7/16”
wrench/nut driver to remove the hex nut,
bolt, lock washer, and DC ground terminal—
remove them from the chassis.
4. Reverse the removed bolt and place it back
in the chassis hole to attach a correctly sized
ground cable with a ring terminal to the
inverter’s chassis as shown in Figure 2-13.
Note: Ring terminal must have a hole size ≥1/4”.
5. Place the washer and nut on the bolt over the
ground cable and securely tightened the nut
[from 4 to 5 ft lbf (5.4 to 6.8 N-m)].
Figure 2-13, Connecting a Large DC
Ground Wire
DC Ground
terminal bolt/nut,
reversed and
tightened.
2.7 Inverter Warning Label
A warning label as shown in Figure 2-14 is provided to inform all personnel that an inverter is
installed in your electrical system. Affi x this label in a clearly visible location at the electrical panel
that is being powered by the inverter. This is because it might be falsely assumed that the panel is
no longer “hot” after the AC power has been shut off, when power may actually still be available
due to the inverter automatically powering the panel.
Figure 2-14, Warning Label
2.8 Final Inspection
1. Verify all cables are secured with wire ties or other non-conductive fasteners to prevent chaf-
ing or damage from movement and vibration.
2. Verify strain reliefs or grommets are in place to prevent damage to the wiring where it passes
through walls, bulkheads, or other openings.
3. Verify all AC connections are correct and torqued to a maximum of 16 in lbf (1.8 N-m).
4. Replace the covers on the main electrical/distribution panel.
5. Replace the chassis access cover.
6. Verify the inverter’s front panel switch is in the “OFF” position.
Info: If required by code, have the installation inspected by an electrical inspector.
This electrical system is equipped with an Automatic
Generator Starting (AGS) device and/or an inverter.
Disconnect all AC and DC power to the AGS and/
or inverter before performing any service to the
electrical system. Failure to do so can result in shock
causing serious injury or death.
PN: 62-0002 Rev A