Other Location Requirements; Electrical And Fuel Inlet Locations; Concrete Slab - Briggs & Stratton FORTRESS Manual Del Usuario

Other Location Requirements

• Place the standby generator in a prepared location
that is flat and has provisions for water drainage.
• Install the standby generator in a location where
sump pump discharge, rain gutter down spouts, roof
run-off, landscape irrigation, or water sprinklers will
not flood the unit or spray the enclosure, or enter any
air inlet or outlet openings.
• Install the standby generator where it will not affect
or obstruct any utility services (including covered,
concealed, and underground), such as telephone,
electric, fuel (natural gas / LPG vapor), irrigation, air
conditioning, cable, septic, sewer, well, etc.
• Install the standby generator where leaves, grass,
snow, etc will not obstruct air inlet and outlet
openings. If prevailing winds will cause blowing or
drifting, a windbreak may be needed to protect the
unit.

Electrical and Fuel Inlet Locations

A through-slab power cable stub-up is recommended.
If a stub-up is not used, (B, below) indicates the
recommended location for punching a hole to attach
power conduit. The 1" (25.4 mm) NPT fuel inlet connector
(A) is shown for reference.
B
12

Concrete Slab

The generator must be installed on a reinforced concrete
slab, constructed as follows:
• 28 day compression strength of 3000 psi (200 MPa)
• Minimum 5" (13 cm) thick
• Minimum 6" (15 cm) wider than the standby enclosure
on all sides
• Strengthen slab with No. 6 reinforcing bars on 12" (30.5
cm) centers or 8 ga. steel wire fabric with 6" (15 cm)
centers
• Avoid placing reinforcement in the entrance stub-up
area
The following dimensions will be needed to properly size and
configure the slab. Refer to figure at right:
A - Enclosure dimensions
• 35kW = 82" (208 cm) long x 37" (94 cm) wide
• 48kW = 88" (224 cm) long x 37" (94 cm) wide
• 60kW = 96" (244 cm) long x 37" (94 cm) wide
B - Generator mounting holes
• 35kW = 80" (203 cm) long x 34.25" (87 cm) wide
• 48kW = 85" (216 cm) long x 34.25" (87 cm) wide
• 60kW = 94" (239 cm) long x 34.25" (87 cm) wide
C - Fuel inlet location
• 35kW = 43" (109 cm)
• 48kW = 45.5" (116 cm)
• 60kW = 52" (132 cm)
A
D - Entrance stub-up area
• 35kW = 9.25" (24 cm) long x 6.0" (15 cm) wide
• 48kW = 10.5" (27 cm) long x 6.75" (17 cm) wide
• 60kW = 6.0" (15 cm) long x 5.25" (13 cm) wide
D1 x D2 - Entrance stub-up location
• 35kW = 8.5" (22 cm) x 7.75" (20 cm)
• 48kW = 8.5" (22 cm) x 7.75" (20 cm)
• 60kW = 16.0" (41 cm) x 7.0" (18 cm)
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