11
OPM-155/A
A.C. CONNECTIONS
NOTICE: CLASS 1 WIRING METHODS ARE TO BE USED
FOR ALL FIELD WIRING CONNECTIONS TO TERMINALS
OF A CLASS 2 CIRCUIT
All wiring must be completed in accordance with the
National Electric Code as well as any state and local codes.
You must pay particular attention to wire size requirement
for the amperage of service you are dealing with. The table
below provides you guidance on wire sizing based on both
wire type and amperage.
Wire amperages have been
derated for 40° C ambient temperatures operation.
WARNING
Make sure the generator is disconnected from the
battery to prevent accidental starting.
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.
B. GENERATOR CIRCUIT BREAKER:
WARNING: PERSONAL INJURY/DEATH
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.
Your generator is equipped with an electronic circuit
breaker. These premium circuit breakers are adjustable
allowing you to fine tune them for your applications.
WINCO uses an adjustable breaker, which allows us to
use the same breakers in reconnectable units. These
adjustment should only be made by a competent
technician to prevent equipment damage, injury or
death. The following features are adjustable:
Long-Time Protection:
The dial that controls the long-time protection is labeled
Ir. The dial correlates with the amperage setting of the
long-trip. All the wires should be sized equal to or greater
than this dial position. The breaker will not trip at 105% of
the dial position current and will trip within two hours of
120% of the dial position.
Short Time Protection:
The dial that controls the short-time protection is labeled
Isd (x In). This setting controls the inrush current the
A
B
C
D
E
circuit breaker will allow. The number on the dial is the
current allowable based upon the long-time (Ir) setting
of the breakers. For example, if the Ir of the breaker is set
at 200 and the Isd is set at 1.5 the short term breaker
setting is 250 amps.
Instantaneous Protection:
The dial that controls the instantaneous protection is
labeled Ii (x In). The breaker will trip immediately upon
reaching this current level. The dial is set as a multiple of
the Long-time (Ir) setting.
The circuit breaker has three LED lights on it.
Ready LED (green)
Blinks slowly when the electronic trip unit is ready to
provide protection.
Overload Pre-Alarm LED (orange)
Shows a steady light when the load exceeds 90% of the Ir
setting.
Overload Alarm LED (red)
Shows a steady light when the load exceeds 105% of the
Ir setting.
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 will accommodate #6 AWG to
300 MCM and should be torqued to 21 ft. lbs.
D: 120V/20 AMP DUPLEX RECEPTACLE:
This convenience receptacle is used to power both
battery charger and the block heater. This circuit must be
fed from a GFCI fused circuit in the distribution panel. See
wiring instruction, this receptacle is split. On side is for the
20 amp block heater and the other is for the 15 amp
battery charger. Two individual power feed must be run
to this receptacle. A label is provide in the connection
panel to tell which side is which.
E: 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: 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).
