Magnum Energy MMS Series - Manual (Page 27)

© 2014 Magnum Energy, Inc. 21
Installation
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.
After connecting the wires together, gently pull on the wires to ensure
they are securely held together. In a proper connection, no bare wire
should be exposed
.
Info: Per UL certifi 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.
After all AC wiring in the inverter is complete (and before reattach-
ing the AC access cover), ensure all the connections are correct and
secure.
2.4.3 AC Wire Size and Overcurrent Protection
The AC input and output wiring must be sized per NEC and local elec-
trical safety code requirements to ensure the wire’s ability to safely
handle the inverter’s maximum load current. After determining the
proper AC wire sizes, the inverter’s AC input (unless you are using a
fl exible cord) and output wires are required to be protected against
overcurrent and have a means to disconnect the AC circuits.
All inverter AC input and output wiring is required to be protected
by an overcurrent protection device. Overcurrent protection must
be provided by fuses or circuit-breakers, and must
be properly sized
and rated for the wire they are protecting and the appliances being
powered.
Most inverter’s that are hardwired use a service/distribution panel
wired to the inverter’s input (main panel), and a dedicated panel
between the inverter’s output wiring and the AC loads (sub-panel).
These systems use the circuit breakers provided in the panels as the
overcurrent protection and the AC disconnect. If fuses are used, then
separate AC disconnect switches will be needed.
Table 3, Wire Color to AC Wire Connection
Wire Color (label) Wire Connection
AC IN
Black (HOT IN) Hot In
White (NEUT IN) Neutral In
AC OUT
Red (HOT OUT) Hot Out
White with black
stripe (NEUT OUT)
Neutral Out
AC Ground Green (GROUND) AC IN & AC OUT Ground