Peak Energy Installation Manual
REC Peak Energy Series Installation Manual - UL
Rev K. .
vii) Short side mounting using clamps
Mounting utilizing clamps on the two short sides of the panel have been found to be in compliance with UL requirements for a maximum design load
of . lbs/ ( Pa) (fig. ).
• Fix the panels so that the lower short side of the frame is supported by the mounting structure (to reduce risk of damages due to sliding snow load).
• Clamps must be secured between a distance of . and . inches ( mm) from the panel corner to the clamp edge.
• Tightening torque must be tightened to -lbs (. Nm).
• The minimum distance between the end clamp and the end of the rail is in ( mm).
• Mechanical load must not exceed . lbs/ ( Pa).
• The overlap between support rail and frame must be a minimum of / in (6 mm).
In areas of snow build-up, panels can be subjected to forces in excess of the stated limit even when snow depth does not appear extreme,
causing damage to the framework. If the installation is likely to be affected, further suitable panel support is recommended on the lower row
of panels.
Ensure the drainage holes are not covered by the mounting structure.
Where common grounding hardware (nuts, bolts, star washers, split-ring lock washers, flat washers and the like) are used to aach a listed
grounding/bonding device, the aachment must be made in conformance with the grounding device manufacturer’s instructions.
vi) Long side mounting using clamps
Mounting utilizing clamps on the two long sides of the panel have been found to be in compliance with UL requirements for a maximum design load of
. lbs/ ( Pa) (fig. ).
• Clamps must be secured between a distance of . in to . in ( mm - mm) from the corner of the panel (measured from the mid-point) to
the clamp edge.
• Tightening torque must be tightened to -lbs ( Nm).
• The distance between the end clamp and the end of the rail must be minimum in ( mm).
Fig. : Long side mounting Fig. : Short side mounting
8.2”-16.4”
1”
1”
4.9”-9.8”
viii) Grounding
A panel with exposed conductive parts is considered to be in compliance with UL only when the it is electrically grounded in accordance with the
instructions presented below and the requirements of the NEC. Grounding is achieved through securement to the panel frame of the following UL Listed
grounding Clips / Lugs in combination with the REC Peak Energy panel(s).
• Suitable grounding lugs must be used: Listed (KDER) ILSCO, GBL-DBT (tin plated) E.
• Grounding cable size should be between AWG (. mm
- .mm.
• Aach grounds to the grounding holes in the panel frames.
• Fix lug to the frame using a star washer () and lock nut (), ensuring a conductive connection (fig. ). Tighten according to manufacturer’s
instructions.
Fig. : Recommended grounding
Cross section [AWG] Type Torque [in-lbs]
Stranded
Stranded
Stranded / Solid .
To avoid galvanic corrosion, stainless steel fastening materials are preferred, however galvanized or hot dipped zinc plated fasteners are
equally suitable.
Grounding
cable
Star washer
Grounding lug dimensions and wire fastening torque for
GBL-DBT