Site Selection and Preparation
3.2.1— Material Sufficient for Level Installation
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Dig a rectangular area approximately 5 inches (127 mm) deep and about 6 inches (152 mm) longer and wider
than the footprint of the generator. Fill with pea gravel, crushed stone or any other non-combustible material suf-
ficient for level installation. Compact and level the material. A concrete pad can be poured if required. Make the
concrete pad 4-5 inches (102-127 mm) thick and extend 6 inches (152 mm) beyond the outside perimeter of the
generator in all directions.
NOTE: If a concrete pad is required, follow all applicable Federal, State and local codes.
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Figure 3-3. Compacted Gravel Site
Figure 3-4. Concrete Pad Site
Installation Guidelines for Air-Cooled Generators