Magnum Energy ME-G Series - Manual (Page 27)

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2015 Sensata Technologies Page 18
Installation
CAUTION: Ground Fault Circuit Interrupters (GFCIs) shall be installed in the recreational
vehicle wiring system to protect all branch circuits.
WARNING: Risk of electric shock. Use only ground-fault circuit interrupters [receptacle(s)
or circuit breaker(s)] that are compatible with your ME-G inverter. Some types may fail
to operate properly when connected to this inverter equipment.
2.5.4 AC Terminal Block Connections
The ME-G Series models have a fi ve-pole AC terminal block and one AC ground terminal to
connect the inverter’s AC input and output wiring. This terminal block (see Figure 2-8) allows
a service/distribution panel (main panel) to be wired to the inverter’s input, and also allows a
dedicated panel (sub-panel) between the inverter’s output wiring and the AC loads. To access and
view the AC terminal block and ground terminal, remove the two Phillips screws holding the AC
wiring access cover plate (Figure 1-3, Item 15).
Each connection on the AC terminal block is rated to accept one #14 to #6 AWG (2.1 to 13.3
mm 2 ) CU stranded wire, or two #12 AWG (3.3 mm 2 ) CU stranded wires. Each connection uses a
M3.5 slotted head screw, and the maximum tightening torque is 16 lbf-in (1.8 N-m).
Info: One of the AC wiring confi gurations [SI/SO (50A), Figure 2-11] uses a #6 AWG
(13.3 mm 2 ) CU wire to carry 60 amps, and splits to two wires to allow 30 amps for each
leg (i.e., AC HOT 1 IN and AC HOT 2 IN). IDEAL Industries Inc. (www.idealindustries.
com) manufactures a crimp connector (PN: 412) and a separate insulator (PN: 417)
that allow up to two #8 AWG (8.4 mm 2 ) wires, with one #6 AWG (13 mm 2 ) wire to be
connected together.
Info: To comply with ABYC requirements for marine installations, the AC terminal has
a stainless steel wire protector to prevent wire damage from the set-screw.
Info: The inverter’s NEUT IN and NEUT OUT terminals are electrically isolated from
each other while inverting. This is related to the neutral-ground bonding requirement
and helps to prevent ground-loops (see Section 2.6.3 for more information).
The AC ground terminal can accept one #14 to #6 AWG (2.1 to 13 mm 2 ) CU stranded wire. It
uses a slotted head screw and has a recommended maximum tightening torque of 45 lbf-in (5.1
N-m). For multiple ground wires, use a pressure or mechanical connector to attach the single wire
from the AC ground terminal to the input and output ground connections.
Figure 2-8, AC Terminal Block
AC GROUND
(In & Out)
NEUT IN
HOT 1 IN
HOT 2 IN
HOT 2 OUT
NEUT OUT