0 installation – Magnum Energy MMS-E Series User Manual

Page 27

2.8.4 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
IN opening (Figure 1-2, Item 10). Refer to Table 2-4 for minimum
wire size and overcurrent protection required for the AC input wiring.

2. Remove about two inches (5.1 cm) of the insulating jacket from
the AC cable, and then separate the three wires and strip about 3/4”
of insulation from each wire.

3. Using approved AC wire connectors, connect the incoming Hot
In (brown), Neutral In (blue), and Ground (green w/ yellow stripe)
wires to the MMS-E’s AC wires colored black (HOT IN), white (NEU
IN), and green (AC GROUND) respectively.

4. After making the AC input connections, secure the AC input cable
by tightening the strain relief clamp.

The AC input wiring in the inverter is now complete. Review all AC
wiring to ensure all connections are correct and secure.

Table 2-4, Minimum Wire Size to Circuit Breaker Size

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.

Based on information from the IEC, Table 2-4 provides the minimum
AC wire size and the suggested breaker size based on the inverter
model. However, a larger wire size may be required because of volt-
age drop. The

AC wire sizes provided in this table assume using only

copper wire and a temperature rating of 75° C or higher. A minimum
of 2.08 mm² (#14 AWG) is required for all AC wiring.

2.0 Installation

AC Input

Input

Breaker

8 amps

AC Output

Minimum

Wire Size

Suggested

Breaker Size

2.08 mm²

(#14 AWG)

15 amps

Output