Vertiv™ XTE PTS Series PEIL/PESB Power Transfer Switches Description & Installation Manual
8
6.2
Constructing the Pad
Stages of Construction
•
The construction of the pad is performed in the following stages:
•
Preparing the Site
•
Preparing to Pour the Concrete,
•
Installing the Mounting Template,
•
Pouring the Concrete.
Preparing the Site
Perform the following steps to prepare the site for construction of the concrete pad:
1.
Make sure that the pad location is firm and level. If the ground around the location is not firm, compact the soil and construct
a level base for the pad using a minimum of 6 inches (15 cm) of gravel.
2.
Dig trenches to accommodate the conduit for AC power cable and the ground wire according to local practices. See
for the conduit entrance location.
3.
Place the conduits for AC power cable. Conform to local electrical construction standards for conduit materials and sizing.
4.
If required by local practices, treat the area below the pad and for 2 feet (60 cm) around the perimeter against insect
infestation.
5.
Fill in the trenches around the pad with soil and tamp.
Preparing to Pour the Concrete
Perform the following steps to form the pad and to prepare for the pouring of the concrete:
1.
Construct the pad forms, using the dimensions shown in
2.
Place wire mesh in the forms so that the mesh is vertically centered in the finished pad. (See
). Make sure
that the wire mesh or reinforcing bars are set approximately 2 inches (5 cm) off the bottom of the form.
NOTE!
In place of wire mesh, you may use No. 3 (3/8-inch - 9.5 mm) or larger reinforcing rods placed on 15-inch (38.1 cm)
centers.
