18
REC Installation Manual - REC Alpha Panels - IEC 61215 /61730
Rev 13 - 11.22
DRAINAGE HOLES
On the long and short sides of the REC frame small drainage holes can be found that allow humidity and water to exit the frame easily and minimize
the potential for damage (fig. 14). These are spaced 55 mm from the corner of the panel. These holes must not be used for mounting the panel, and
they must not be covered by any part of the mounting structure.
To enable effective drainage, the holes must remain fully open and enable water
egress during and after installation. The shape and dimensions of the drainage holes may vary depending on product and/or frame design.
GROUNDING
Local regulations may require grounding of the panels. Installers are responsible for ensuring compliance with relevant local regulations. Grounding
must be done using an electrical connection from the panel frame. REC solar panels have a small round grounding hole positioned near each corner
of the panel on both the long side and the short side,
as shown in fig. 12 and can be further
identified by the grounding symbol stamped in the frame
next to it. Check all applicable requirements before beginning installation:
• Suitable grounding clips, lugs or other constructions must be used,
• Attach grounds to the grounding holes in the panel frames,
• Follow the grounding device manufacturer’s installation instructions to ensure a safe and conductive connection, including any
supplementary hardware, e.g., star washer, and tighten according to recommended torque,
• Where common grounding hardware (nuts, bolts, star washers, split-ring lock washers, flat washers and the like) are used to attach a grounding
device, the attachment must be made in conformance with the grounding device manufacturer’s instructions.
Fig. 14: Drainage and grounding holes
25.6- 0 [650 - 0 mm]
GR
GR
GR
GR
0-25.6 in [0 - 650 mm]
9.8 - 4 in
[250 - 100 mm]
4 - 9.8 in
[100 - 250 mm]
9.8 - 4 in
[250 - 100 mm]
4 - 9.8 in
[100 - 250 mm]
25.6- 0 [650 - 0 mm]
0-25.6 in [0 - 650 mm]
NOTE
• To avoid galvanic corrosion, galvanized or hot dipped zinc plated fasteners are preferred, however stainless steel fastening materials are
equally suitable.
• The support bars across the rear of REC Alpha panels are connected to the frame via specially designed grounding clips and do not need to
be individually grounded.
• Negative grounding of the panels is not required by REC.
i
Grounding holes
Drainage holes
