© 2017 Sensata Technologies
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2.4.4 AC Wiring Connections
For the MMS1012 model, the AC input and output wiring is performed
in the AC wiring compartment. This compartment is accessed via
the top panel (Figure 1-3, Item 8). If the panel cover is installed,
remove the two Phillips screws on the cover to access the AC wiring
compartment and locate the inverter’s AC wiring. There is a label
located in the AC access compartment which gives information on
which wires are used for AC input and output (see also Figure 2-9).
You can also refer to Table 2-3 to match the inverter’s AC wires to
the appropriate AC wire connection.
The AC wires inside the AC compartment are #16 AWG (1.3 mm²)
with a temperature rating of 105°C (221°F). All AC connections should
be made using an approved connector for your application (e.g., split
bolt, twist-on wire connectors, etc.). Ensure the wire connectors
used are rated for the size and number of wires you are connecting.
Info:
Per UL certi
fi
cation, non-metallic sheathed cable
(i.e., Romex™) or an SO
fl
exible cord with listed strain
reliefs are allowed to be used to connect to the inverter;
conduit connections are not allowed.
Info:
The inverter’s Neutral In and Neutral Out wires
are electrically isolated from each other while inverting.
However, these same input and output neutrals are
connected together while charging.
2.4.5 AC Input Wiring
Your inverter has an AC transfer feature that passes the AC input
power to the inverter’s output. Connection to the AC input is made
by hardwiring from a distribution panel as described below:
1. Run an appropriately sized 2-conductor plus ground cable (from
the AC distribution panel) through the strain relief clamp on the AC
input opening (Figure 1-3, Item 10). See Table 3 for minimum wire
size and overcurrent protection required for the AC input wiring.
2. Remove about two inches of the insulating jacket from the AC
cable, and then separate the three wires and strip about 3/4”
(1.9 cm) of insulation from each wire.
3. Using approved AC wire connectors, connect the incoming Hot
In, Neutral In, and Ground wires to the MMS1012’s AC wires
colored black (HOT IN), white (NEU IN), and green (AC GROUND)
respectively.
4. After making the AC input connections, gently pull on the wires
to ensure they are securely held together and no bare wire is
exposed, and then secure the AC input cable by tightening the
strain relief clamp.
The AC input wiring in the inverter is complete. Review all AC wiring
to ensure all connections are correct and secure.
Installation
