Doc Number 801-00015, Version 1.1, Copyright © 2010 Zep Solar, Inc.
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ZEP SYSTEM II INSTALLATION MANUAL
The maximum cantilever at the edge of the array is determined by multiplying the maximum span
by 0.33. In the example below, the span between Leveling Feet is 48” which allows for a maximum
cantilever of 16”. It is recommended that Leveling Feet not be installed within 2” of the corner of the
Module. Therefore, the allowable mounting zone for the last foot in a row (End-Foot Zone) is in an
area within the cantilever allowance not including the last two inches of the Module. On the right side
of Figure 4.2A, the cantilever originally exceeded the allowable value so Leveling Foot (solid circles)
were placed on the rafters closest to the edge of the array to meet the cantilever requirements.
If the maximum cantilever allowance cannot be met by adding another Leveling Foot, it may be
necessary to shift the array to the East or West in order to support the array properly. In Figure 4.2B,
distance A represents the Cantilever Allowance whereas distance B represents the area where a
Leveling Foot can be attached (End-Foot Zone). In Figure 4.2B, example #1 illustrates proper place-
ment, allowing the rafters to meet the cantilever requirements. In example #2, the right side of the
row does not meet the cantilever requirements so the entire array would need to shift a few inches
to the left in order to allow for proper support of the cantilevers.
Figure 4.2A
— Identifying Leveling Feet and Interlocks
