9
OPM-128/E
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 and
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. 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.
2. If the generator set is connected to an existing
distribution system, a fully isolated manual transfer
switch must be installed. The transfer switch prevents
damage to the generator and the other circuit
components if main line power is restored while
the generator is connected. Installing a transfer switch
also permits the use of normal fusing.
3. Many homes and construction sites are wired for at
least 60 to 100 Amp entrance service, much greater
than the capacity of this portable generator. When
installing the generator at these sites, a secondary
emergency distribution panel may have to be installed.
The emergency distribution panel must be installed by
a licensed electrician according to all applicable codes.
The electrician will move the critical circuits to be
powered during the outage to the emergency panel.
Keep in mind only a limited amount of amperage is
available from the generator set. Some circuit breakers
may still have to be turned off to prevent an overload
on the generator during the initial start up. See the
nameplate on your generator for the amperage
capabilities of your unit.
CAUTION: EQUIPMENT DAMAGE
Failure to properly limit and balance the load applied to
the generator will cause the generator to produce low
voltage and may damage the engine generator set. It may
also cause severe damage to the loads connected to the
generator at that time. Improper loading of the generator
set constitutes abuse and will not be covered by warranty.
