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2.1.4 GENERATOR RESTRAINT
Use four 3/8"-16 hardened steel bolts (Grade 5) to
fasten the generator to the supporting frame or the
support tubing. These bolts must pass through (a)
the generator mounting base, (b) the compartment
floor (if a compartment is used) and (c) the supporting
framework (Figure 2.3). All bolts must be long enough
so that when tight, at least three threads are visible
past the retaining lock nuts. Refer to the "Generator
Compartment" section for the location of the generator
mounting holes.
Figure 2.3 – Typical Generator Restraint
2.2 GENERATOR COMPARTMENTS
Whether the generator set is being installed inside a
compartment specifically manufactured to house a
generator or inside a compartment that the installer
constructs, the compartment MUST meet certain spec-
ifications as outlined in the following sections:
2.2.1 COMPARTMENT SIZE
Plan the compartment size carefully. Provide a mini-
mum clearance of 1/2 inch (13 mm) on the front, 1-
1/2 inches (38 mm) on the top, and 1 inch (25 mm)
on the sides and the back for air circulation AFTER
the compartment has been lined with metal and
sound insulation (Figure 2.4).
NOTE:
Refer to “Figure 1.2 – Major Features and
Dimensions”.
Figure 2.4 – Clearances
1" Clearance
in Back
1 1/2" Clearance on Top
1" Each Side
1/2"
in Front
Insulation
Plywood
Compartment
2.2.2 COMPARTMENT CONSTRUCTION
The generator compartment should be either con-
structed of, or lined with, 26-gauge galvanized
steel.
NOTE:
Aluminum is NOT an acceptable alternative to
galvanized steel due to aluminum’s low melting
point.
If the compartment is lined with galvanized steel,
it may be constructed of any material. The manu-
facturer recommends that the compartment be
constructed of 1/2-inch thick plywood (not strand-
board), with the floor made of a double thickness
of 1/2-inch plywood with the grain of the wood at
cross section for added strength (Figure 2.5).
Figure 2.5 – Typical Compartment Construction
If constructing a compartment, line the exterior
(underside) of the compartment floor with 26-
gauge galvanized steel.
All seams, splices and joints of the compart-
ment walls (unless vapor tight by design) should
be caulked to prevent poisonous, flammable or
explosive vapors from entering the vehicle interior.
NOTE:
Caulking must be done so that the caulking mate-
rial will stay in place permanently. Pressing such
materials as putty tape onto joints and seams is
NOT acceptable. A high quality silicone rubber base
sealant is recommended.
Holes and openings made in the compartment
walls to allow for the passage of electrical conduit,
conductors, hoses, cables, etc., into the vehicle liv-
ing area must be sealed vapor tight with silicone
rubber base sealant.
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Section 2 – Installation
Recreational Vehicle Generator