Inverter Notifi Cation Requirements; Figure 2-14, Large Ground Wire Connected To Msh-Re Series - Magnum Energy MagnaSine Hybrid Owner's Manual

2.6.4 Connecting a Large DC Ground Wire
Some installations require the 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 and remove the AC access cover plate
(Item 15, in Figure 1-3) on the inverter.
2. Locate the DC ground terminal (Item 7, in
Figure 1-2).
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 to the inverter's chassis as
shown in Figure 2-14.
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)].
Note: The ground cable must have a hole
size ≥1/4".
2.7 Inverter Notifi cation Requirements
When an inverter is installed in a building, facility or structure, the NEC (National Electrical Code)
requires a label or plaque to be provided. This label/plaque is required to be easily visible and
provide information that informs personnel on the location of all electrical system disconnects.
This is to ensure all power to a building is quickly located and shut down in an emergency. There
are also specifi c requirements for this label/plaque depending on the inverter application, they
are as follows.
2.7.1 Facilities with Standalone Systems
Any building, facility, or structure with a photovoltaic power system that is not connected to a
utility service source and is a standalone system must have a permanent plaque or directory
installed on the exterior of the building or structure at a readily visible location acceptable to the
Authority Having Jurisdiction (AHJ). The plaque or directory must provide the location of system
disconnecting means and information regarding whether the structure contains a standalone
electrical power system.
2.7.2 Facilities with Utility Services and PV Systems
Buildings, facilities, or structures with both utility service and a photovoltaic system must have a
permanent plaque or directory providing the location of the service disconnecting means and the
photovoltaic system disconnecting means if they are not in the same location.
© 2013 Magnum Energy, Inc.
Figure 2-14, Large Ground Wire
Connected to MSH-RE Series
Installation
DC Ground
terminal bolt/nut,
reversed and
tightened.
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