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TP-6335 9/04 Electrical System 13
Section 6 Electrical System
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
areinplace.
Movingrotor.
WARNING
Electrical backfeed to the utility. Hazardous backfeed
voltage can cause severe injury or death. Connect the
generator set to the building/campground electrical system
only through an approved device and after the
building/campground main switch is opened. Backfeed
connections can cause severe injury or death to utility
personnel working on power lines and/or personnel near the
work area. Some states and localities prohibit unauthorized
connection to the utility electrical system. Install a transfer
switch to prevent interconnection of the generator set power
and other sources of power.
6.1 Electrical Connections
Have qualified electricians make electrical connections.
Connections to the load leads, battery, and remote
switch panel complete the installation. To prevent
unintentional starting, make final connections to the
battery only after making all other connections.
The following paragraphs provide details on each
connection. Refer also to the wiring diagram in the
operation manual.
Securely support or harness all wiring to the generator
set to prevent abrasion. Provide additional support for
the wiring to prevent exposure to the exhaust system
and drippage of fuel, oil, or grease. Allow at least a
51 mm (2 in.) clearance between the electrical wiring
and hot exhaust parts. Do not locate the wiring directly
below or near the fuel system parts or the oil-fill tube.
The following paragraphs cover some other points to
consider when making AC load connections.
Note: At the time of installation, make the wiring
connections accessible for inspection and
service.
6.2 AC Load Lead Connections
Routing. Each generator set has four color-coded load
leads. The black l eads (L1 and L2) are hot, the white
lead (L0) is neutral, and the green lead is the hazard
ground. See Section 8 for the AC load lead connections.
Route the load leads directly from the junction box to the
vehicle AC circuit or transfer switch connection. Route
the load leads of all installations through flexible conduit
from the generator end bracket to the junction box.
Keep the load lead junction box accessible for service
and inspection.
Note: Keep the load lead circuit away from the
generator fuel and exhaust system components.
Note: Use field-supplied wiring capable of withstanding
temperatures of 75_C (167_F).
Connect the neutral of the AC circuit in the vehicle to
lead L0 (white or gray). If the vehicle uses equipment
ground-type plugs and receptacles (3-pronged),
connectthe green wire to the U-shaped pin. Onvehicles
that also have provisions for using an outside AC power
source, completely isolate the neutral as well as the hot
(black) leads from the generator set when switching
power to the outside source. See Figure 6-1.