11
OPM-151/A
CONNECTING THE LOADS
The engine-generator covered in this manual was designed
for portable use. Do NOT operate indoors. The unit should
be stored in a warm, dry location. Move the unit outdoors
to a flat, dry location for use.
APPLYING THE LOADS
WARNING: PERSONAL INJURY
Receptacles with GFCI protection should be tested
prior to use. A damaged or faulty GFCI could cause an
electrical shock.
Allow the engine to warm up for two or three minutes
before applying any load. This will allow the engine to
reach normal operating temperature and oil to circulate
throughout the engine. A short warm-up time will permit
the engine to work more efficiently when the load is
applied and will reduce the wear in the engine, extending
its life.
Receptacles have been provided to allow loads to be
connected to the generator. The loads should be added
one at a time. If a large motor is being started: or multiple
motors are being started, they should be started individually
and the largest should be started first.
CAUTION: EQUIPMENT OVERLOAD
Keep the generator load within in the generator and
receptacle nameplate rating. Overloading may cause
damage to the generator and/or the loads.
Most electric tools and appliances will have the voltage and
amperage requirements on their individual nameplates.
When in doubt, consult the manufacturer or a local
electrician. The nameplate amperage rating for electric
motors can be misleading. See “Starting Electric Motors” in
the Unit Capabilities.
These engine-generator sets are inherently self regulating
based on engine speed. The engine governor will
automatically adjust itself to the load. No harm to
the generator will result if it is operated with no load
connected. Proper utilization of the receptacles located on
the control panel is necessary to prevent damage to either
the receptacles or the generator. The generator is a limited
source of electrical power, therefore, pay special attention
to the receptacle and generator ratings. The nameplate
rating can be obtained through a single receptacle as long
as the receptacles amperage rating is not exceeded.
GROUNDING
Proper grounding of your generator is application
dependent. Carefully evaluate your planned use of your
generator to understand which grounding you require.
If you are not sure what to do, contact a competent
professional to assist you. The NFPA 70 250:34-35 are good
technical references.
STANDARD PORTABLE GENERATOR
Your WINCO portable generator ships with a bonded
neutral. You can safely use this generator without external
grounding as long as all loads are powered through the
receptacle panel.
VEHICLE-MOUNTED GENERATOR
Your WINCO portable generator ships with a bonded
neutral. When mounted to a vehicle to safely distribute
power it is necessary that the generator frame is bonded
to the vehicle frame. The generator should only supply
equipment that is cord and plug connected through
receptacles mounted on the generator or the vehicle.
PERMANENTLY INSTALLED GENERATORS
This WINCO portable generator ships with a bonded
neutral and overcurrent protection. NFPA 70 refers to this
as a “separately derived system.” When connecting it to a
building a transfer switch specifically designed for GFCI and
bonded neutral generators is required.
WIRING
Plug your tools such as drills, saws, blowers, sump pump,
and other items to be powered directly into the generator
receptacles. Before plugging in all the tools and cord
sets, recheck the rating of the generator set. Be sure it
can handle the intended load and is compatible with the
voltage, phase, and current ratings. ‘Hard wiring’ this unit
directly into a temporary construction site electrical system
is NOT A SIMPLE DO-IT-YOURSELF JOB. For your safety, all
wiring must be done by a qualified electrician and conform
to the National Electric Code and comply with all state/local
codes and regulations. Check with local authorities before
proceeding.
WARNING: PERSONAL DANGER
A fully isolated, double pole double throw manual
transfer switch must be installed any time a generator is
being connected to an existing distribution system.
1. These engine-generator sets are designed for portable
heavy duty commercial use. Receptacles are provided on
the control panel to permit 120 and 240 Volt portable
appliances and tools to be plugged directly into them.
Please note that the 3-wire 240 Volt receptacle(s) on
these units are designed to power only 240 Volt tools.
There are two hot leads and a ground wire, but no
neutral connection, in the 3-wire 240Volt receptacle. A
4-wire receptacle (two hot, one ground, and one
neutral) has been provided on the control panel for use
in temporary power applications requiring 120/240
Volt power. Consult a licensed electrician for wiring the
TemPower plug and connecting it as temporary service.
To connect these units directly to an un-powered,
isolated construction site TemPower panel, have your
electrician connect to the control panel using a 120/240
Volt, 4-wire twist-lock plug (14-60P).
