REC Peak Energy 72 Installation Manual - UL 1703
Rev C.3 - 02.16
Ref: NE-06-06-C
8
Where common grounding hardware (nuts, bolts, star washers, split-ring lock washers, flat washers and the like) are used to
attach a listed grounding device, the attachment must be made in conformance with the grounding device manufacturer’s
instructions.
GRounDInG
A panel with exposed conductive parts is considered to be in compliance with uL 1703 only when it is electrically grounded in accordance
with the instructions presented below and the requirements of the National electrical Code.. grounding is achieved through securement to
the panel frame of the following uL Listed grounding Clips/Lugs in combination with the ReC Peak energy 72 panels.
•
suitable grounding lugs must be used: Listed (kDeR) ILsCo, gBL-4DBt (tin plated) (e34440).
•
grounding cable size should be between 4 - 14 Awg (2.1 mm²
- 21.2mm²).
•
Attach grounds to the grounding holes in the panel frames.
•
fix lug to the frame using a star washer (#10) and lock nut (#10), ensuring a conductive connection (fig. 9). tighten according to
manufacturer’s instructions.
fig. 9: Recommended grounding
Cross section [AWG]
Type Torque [in-lbs]
4 - 6
stranded
35
8
stranded
25
10 - 14
stranded / solid
2.8
To avoid galvanic corrosion, stainless steel fastening materials are preferred, however galvanized or hot dipped zinc plated
fasteners are equally suitable.
grounding lug dimensions and wire fastening torque for gBL-4DBt
grounding
cable
star washer
GR
GR
GR
GR
GR
-
+
fig. 8 Drainage holes
Ensure the drainage holes are not covered by any part of the mounting structure.
v) slide-in systems
for installations using a slide-in mounting structure, specifications must match those of the clamps noted above regarding grip length and
depth. If you have any questions regarding a mounting system and its suitability for ReC Peak energy 72 panels, please contact your local
office for technical support.
vi) Drainage holes
there are eight drainage holes, 3/8 x 1/4 in (12 x 7.5 mm) in the panel frame, each spaced 2
1/8
in (55 mm) from the corner of the panel frame
(fig. 9). this allows water caused by rain or snow melt to exit the frame easily and minimizes any damage caused by freezing and thawing.
