105.1 AC Wiring Preperations
1.
Remove the system’s front cover.
2.
Make sure the
LG
inverter system input and output voltages are correct for the particular appli-
cation. Remember that the
LG
system provides single-phase power only.
3.
The input circuit breaker in the input service panel provides the means for disconnecting AC to the
LG
inverter system. Only authorized persons shall be able to disconnect AC to the unit. (See
NEC
700-20 and 700-21).
CAUTION: To prevent electrical shock or equipment damage, for all units, make sure the
LG Battery is disconnected and the AC input circuit breaker at the service panel is OFF
before making AC connections to the LG inverter system.
4.
If not previously done, remove cabinet knockouts for AC Input and AC Output as described in
Sec-
tions 104-4, 104.5 or 104.6
depending on mounting method.
CAUTION: Do not drill the cabinet; drill filings may damage the unit and prevent it from
operating. If larger knockouts are needed, use a chassis punch to enlarge the appropriate
knockout. Do not add additional or unnecessary knockouts.
5.
Install the input and output conduits.
6.
Run the AC Input service conductors and AC Output conductors through seperate conduits.
LG
inverter system emergency output circuits shall be installed in dedicated conduit systems and not
shared with other electrical circuits as described in
NEC 700-9(b)
.
LG
models can be configured for either 120Vac or 277Vac input connections as well as various modes
of output
opertion as described in this section. Refer to the appropriate wiring diagrams to properly con-nect the utility AC
power, fixtures and external switching or dimming device (where applicable). Perform
all wiring procedures in
accordance with the applicable codes.
105.2 AC Input Voltage Selector Plug Installation
LG
inverter systems may be operated from either 120Vac or 277Vac power sources. Determine the
actual AC input line voltage and install the provided Voltage Selector Jumpers in the position next to
the
system terminal block that matches the line voltage potential as shown in the illustration
s
below.
NOTE:
Factory terminated
jumper wires are
provided with LG
Systems for making
user selected input/
output voltage
connections.
CAUTION:
Failure to install the Voltage Selector Jumpers will prevent system operation.
Installing the Voltage Selector Jumpers in the position that does not match the actual AC input
line voltage will damage the unit, void the warranty and may cause a dangerous or unsafe
condition.
105.3 AC Input/Output Wiring Connections to Terminal Block
Depending on how the fixture load is to be operated, wire the system as described below.
Normally-On Operation
-
Connected fixture(s) remain illuminated in AC and emergency modes.
See
Wiring Diagram
A
.
Normally-Off Operation
-
Connected fixture(s) illuminate only upon loss of utility AC power.
See
Wiring Diagram
B
.
Normally-On and Normally-Off Operation
-
A combination of the operating modes described above.
See
Wiring Diagram
C
.
7.
120V INPUT
277V INPUT
Jumper wires
Jumper wires
Summary of Contents for DUAL LITE LiteGear LG Series
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