TP-5594 5/95 Installation 6-23
AC Load Lead Connections
Each set has four color-coded load leads. The black
leads (L1 and L2) are hot, the white lead (L0) is neutral
andthe greenleadisthehazardground. Theloadleads
can be routed directly from the junction box to the
vehicle AC circuit or transfer-switch connection. All
installations require that the load leads be routed
through flexible conduit from the generator end bracket
to the junction box location. The load lead junction box
must be accessible for servicing and inspection.
NOTE
Keep load lead circuit away from the generator,
specifically fuel and exhaust system components.
NOTE
Allfield-supplied wiring must becapableofwithstanding
temperatures of 167_F (75_C).
ACloadleadL0(whiteorgray)isalwaystheneutrallead
on Kohler generator sets. Make sure the neutral of the
AC circuit in the vehicle is connected to the lead L0
(white or gray). If equipment ground-type plugs and
receptacles (3-pronged) are used in the vehicle, the
green wire must be connected to the U-shaped pin. On
vehicleswhich alsohaveprovisions forusingan outside
AC power source, the neutral as well as the hot (or
black) leads must be completely isolated from the
generator set when power is switched to the outside
source. See Figure 6-22.
NOTE
A triple-pole, double-throw transfer switch rated for the
calculated load of the RV must be used to transfer the
load from one source to the other. Install a ground-fault
circuit interrupter in the wiring system to protect all
branch circuits.
NOTE
The AC load circuit of the generator set must be
protected by a circuit breaker(s) against overload or
short circuit.
120-V
Outside
Power
AC Vehicle Circuit
Ground Fault
Circuit Protection
L1
L2
Gen.
Set
N N N
L0
120 Volt
240-V
Outside
Power
ACVehicleCircuit
Ground Fault
Circuit Protection
L1
L2
Gen.
Set
N N N
L0
120/240 Volt
Figure 6-22. Transfer Switch Connections, 3-Wire AC Circuit
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