11
OPM-145/D
AC WIRING
WARNING
Make sure the generator is disconnected from the battery
to prevent accidental starting.
WARNING
Wiring and connections to unit should be performed by
a competent technician. Improper installation could result
in electrocution, which could cause equipment damage,
serious injury or death.
A. NEUTRAL LUGS:
These lugs are isolated from ground and provided for you
to connect your neutral wire from the transfer switch to the
generator.
The 100 Amp terminal block lugs will handle wire sizes #4
to 300 MCM and should be torqued to 75in. lbs.
B. GENERATOR CIRCUIT BREAKER:
This circuit breaker provides overload protection for the
generator. Your power feeds from the transfer switch
will connect the bottom lugs on the circuit breaker. The
generator power feeds have already been wired into the
upper lugs.
Please refer to the circuit breaker installed on your unit for
breaker lug capacities and proper toque specifications.
Refer to Wire Sizing Table for guidance on wire sizing
based on both wire type and amperage. For additional
information on wire sizes, refer to table 310-16 of the
National Electrical Code ANSI/NFPA 70.
C. GROUND LUG:
These ground lugs are bonded to ground and are provided
for you to connect your ground wire from the transfer
switch to the lugs and will accommodate #10 AWG to 2/0
AWG and should be torqued to 200 in. lbs.
D: 120V GFCI CIRCUIT TERMINAL BLOCK:
These terminals are rated for 20 Amps and will handle
wire sizes #4 AWG to 18AWG. They should be torqued
to 16 in. lbs. This circuit must be fed from a fused circuit in
the distribution panel and it provides power for the block
heater and the battery charger.
E: 120V/20 AMP DUPLEX RECEPTACLE:
This convenience receptacle is used to power both battery
charger and block heater. This circuit must be fed from a
GFCI fused circuit in the distribution panel.
A
C
F
B
E
D
F: NEUTRAL TO GROUND LEAD LUG:
This lug is provided on the neutral terminal block to allow
you to run a neutral to ground lead if you are using the
generator in a stand alone application. This would be an
application where there is not a distribution panel and
no other ground to neutral bond in the wiring system. If
a grounding wire is attached here, remove the floating
neutral label in the panel. This will not be used when you
are wiring a generator and transfer switch into an existing
power system.
WARNING:
A mainline circuit breaker has been provided inside the
generator housing. During all wiring installations, make
sure the breaker is in the OFF position and the generator
operating switch is in the OFF position.
WARNING: EQUIPMENT DAMAGE:
When installing a three-phase 240 Volt system, be sure
you know which lead is the high voltage “wild” leg (208
Volt line to neutral). The generator normally carries the
high voltage on the G2 lead.
All wires should be installed in rigid or flexible conduit
(knockouts are provided in the control box).
