Perlight Solar PLM-OM Series Installation Manual
14
www.perlight.com
V.01.2022 A1.0
8. Grounding
All module frames and mounting racks must be properly grounded in accordance with local
and national electrical regulations. Proper grounding is achieved by connecting the module
frame(s) and structural members continuously one to another using a suitable grounding
conductor. The grounding conductor or strap may be copper, copper alloy, or other material
acceptable for use as an electrical conductor as per local and national guidelines. The
grounding conductor must then make a connection to earth using a suitable earth ground
electrode.
Attach a separate conductor to one of the marked 4mm diameter grounding holes on the
module frame with a bolt and nut that incorporates an external tooth washer. This is to ensure
positive electrical contact with the frame.
The rack must also be grounded unless they are mechanically connected by nuts and bolts to
the grounded Perlight Solar modules. The array frame shall be grounded in accordance with
local and national guidelines.
No.
Name
Standard
1
Bolt
M4
2
Spring washer
M4 x 1.1
3
Star washer
M4 x 0.8
4
Ground crimp
M4 stud
5
Module Frame
6
Star washer
M4 x 0.8
7
Nut
M4
Fig.10: Grounding crimp and washer sizes
