© 2013/EN Zep Solar, Inc. reserves the right to make specifications changes without any prior notice. All rights reserved.
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Document #800-0329-001 Rev F
File Generated July 3, 2013
Page 4
ZS SPAN INSTALLATION MANUAL FOR RAIL-BASED APPLICATIONS - U.S.
Another example of the use of Key and Tongue in a Zep Compatible design is seen with the Inter-
lock, a component that couples and bonds two modules together. Here, the Key and Tongue are
differently shaped, but they still fit into the Zep Groove in the same manner as the Rockit.
Figure 1.4 Zep Groove and Interlock
Auto Grounding.
The Key and Tongue sides of Rockits and Interlocks establish an electrical
bonding connection between both modules and other Zep Solar components such as the Array
Skirt. The rotation of the Key side into the Zep Groove, and the rotation of the next row of PV mod-
ules onto the Tongue side, acts to establish an equipotential bond for all UL listed components by
cutting through the surface coating (tested for both anodized and painted coatings) on the Zep
Groove.
Note:
All components shown as UL Listed to UL 2703 are listed for bonding.
Interlock back is Key side
Other Zep Solar components such as the Interlock also use the Key and Tongue concept.
Interlock front is Tongue
side
Key side is inserted into
Zep Groove
The fasteners on the Interlock (the
“Interlock Zeps”) are tightened one-
quarter turn to lock securely into the
Zep Groove.
Open
Closed
Rotation seen from Key side
See
on page 53 for more information on the Interlock.