4
1.2
Electrical Connections
Before beginning installation of electrical connections, ensure that all sources (AC & DC) are de-energized; verify
that no voltage is present on the field wiring by using a voltmeter. Check that the source voltage and frequency
match the
charger’s
specifications. Select field wire size using Table 1 below.
Wire terminal table
AC Input Terminal
Line-1, GND, N/L2
DC Output Terminal
Pos & Neg
Remote Temperature
Probe
+ + & - -
Minimum
Recommended
Wire Size *
18Ga
14Ga
Optional accessory supplied
by La Marche. Temp probe
includes correct wire size,
pre-crimped ferrules, and is
marked (+ + & - -)
Range of wire sizes
which fit the LMESpro
push-in spring terminals
18ga
→
14Ga stripped
18ga
→
14Ga w/ferrule
14Ga
→
8Ga stripped
14Ga
→
10Ga w/ferrule
Wire Strip Length
(Inch”/mm)
0.4” / 10mm
0.6” / 15mm
Table 1
–
AC/DC & Ground Wire Size Minimum Requirements
(All wires specified in the table are copper rated at 90 °C or 194 °F)
*
NOTE:
These are minimum recommended sizes per La Marche Standards. The National Electrical Code (NEC)
and Local Wiring Codes must be followed.
The LMESpro utilizes spring-loaded push-in style connectors. It is recommended to use wire crimp ferrules on
the AC & DC field wiring when installing the charger, however it is not absolutely necessary. Crimp ferrules will
prevent wire strands from fraying near the connectors. Being spring-loaded, the connectors are highly resistant
to vibration and do not require periodic torque checks as with a screw-terminal. See Figure-2.
To connect field wiring, you can simply push in the prepared conductors until fully seated. To make the wires
easy to push-in, you may insert a small flat-head screwdriver tip into the rectangular opening above the wire
entry to relieve spring-tension on the wire connection.
Figure 3 - Wire installation
To remove a wire connection (on a completely de-energized system AC & DC), insert a small screwdriver tip in
the rectangular opening above the wire to release spring pressure, then pull the wire out. See Figure 3.
