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Figure 1.3 - Connection for 120/240 Volts
GROUNDED NEUTRAL
STATOR POWER
WINDINGS
•
The AC connection system on air-cooled generators uses a
GROUNDED neutral.
•
A separate green ground wire is connected to the recreational
vehicle's junction box.
•
Total load connected across T1 (Red) to T2 (White), and T3
(Black) to T2 (White), must not exceed rating for the specific
generator (see "Generator Specifications").
Do NOT connect loads in excess of circuit breaker
ratings.
2.1
LOCATION AND SUPPORT
2.1.1
GENERATOR LOCATION
Be sure the installation complies with all standards
and codes listed in the "Standards Booklets" section
of this manual.
The most desirable location for the generator set is between the
vehicle's main frame members. However, this is seldom possible.
Most units must be installed on the side of the vehicle and are
difficult to reinforce.
Many recreational vehicles have been factory equipped with an
area for the generator set. Some vehicles may even have a genera-
tor compartment provided by the vehicle manufacturer.
Plan the generator location based on the following:
•
The generator set must be installed on a framework that is
part of the recreational vehicle, as outlined in the "Generator
Support" section.
•
The location must provide an access opening that is large
enough to permit generator removal (unless the generator is to
be removed from underneath the supporting framework).
•
The location must provide easy access to frequently serviced
components, such as filters, oil drains, spark plugs and other
common maintenance parts.
22
Section 2 – Installation
Recreational Vehicle Generators
T1
RED
CB1
T2
WHITE
CB2
T3
BLACK
NOTE:
NOTE
•
The location must provide sufficient room to allow minimum
clearances as outlined in "Generator Compartments". If sound
insulation is to be used on the compartment walls and ceiling,
the minimum recommended applies to the space between the
generator and such insulation.
•
The location must provide adequate cooling and ventilating
airflow for the generator without a great deal of work and
expense.
•
If mounting the generator in an enclosed compartment, the base
of the generator must rest flat on the floor without any gaps.
•
When using a suspended mounting system, ensure the base of
the generator is flush with the surrounding bodywork. If the unit
is mounted higher in the structure, heated air may recirculate
into the generator causing it to overheat.
2.1.2
GENERATOR SUPPORT
The generator must be securely attached to a metal framework that
has been made part of the vehicle frame structure by bolting or
welding. The metal framework on which the generator will rest and
which will restrain the generator set should consist of at least two
horizontal beams. These beams should consist of (a) 1-1/2-inch
square, 11-gauge steel tubing OR (b) 1-1/2-inch, 11-gauge angle
iron. A typical supporting frame with horizontal support tubing, is
shown in Figure 2.1.
Figure 2.1 – Typical Horizontal Support Frame
The generator can be installed so that it sits on top of the horizontal
support tubing if the vehicle design permits. Another method is
to suspend the generator below the horizontal support tubing by
means of suitable, structurally sound metal framework. The fol-
lowing general rules apply:
•
Vehicle construction MUST be capable of supporting the weight
of the generator.
•
Whether the generator is mounted above the horizontal support
tubing or suspended below the tubing, the supporting frame
used must be structurally sound.
•
If the generator cannot be bolted directly to the supporting
frame or support tubing, consider using additional tubing,
angle brackets or other supports to give the supporting frame
sufficient strength.
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