©
2009 Magnum Energy Inc
Page 22
Installation
2.5.3
Recommended GFCI (Ground Fault Circuit Interruption) Breakers
Some electrical safety codes require the use of GFCI’s. In compliance with UL standards, Magnum
Energy has tested the following GFCI’s and
fi
nd that they function properly when connected to
the inverter’s AC output:
Shock Sentry
TM
#XGF15V-SP
Leviton Smart Lock #8899-A
Hubbel #GF520EMBKA
2.5.4
AC Terminal Block Connections
The inverter has a six-pole AC terminal block and one AC ground terminal to connect the inverter’s
AC input and output wiring. To access and view the AC terminal block and ground terminal, remove
the two Phillips screws holding the AC wiring access cover plate (see
fi
gure 1-3, item 15).
Each connection on the AC terminal block is rated to accepts 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 con
fi
gurations [SI/SO (60A),
fi
gure 2-12] uses a #6 AWG
wire to carry 60 amps and splits to two wires to allow 30 amps for each leg (i.e. AC
HOT 1 and AC HOT 2). IDEAL Industries Inc. (www.idealindustries.com) manufactures
a crimp connector (PN: 412) and a separate insulator (PN: 417) that will allow up to
two #8 AWG wires with one #6 AWG wire to be connected together.
Info
: For marine installations and to comply with ABYC requirements, the six-pole AC
terminal is provided with 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 2.6.4 for more information). If the
installation requires the input and output neutrals to be connected together, the
Inverter’s neutral-to-ground connection must be disconnected (see section 2.6.5).
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 2-10, AC Terminal Block
AC GROUND
(In & Out)
NEUT IN
HOT 1 IN
HOT 2 IN
HOT 1 OUT
HOT 2 OUT
NEUT OUT
