东方日升新能源股份有限公司
PV module installation and
maintenance manual
RISEN ENERGY CO.,LTD.
主导部门：组件研发中心
Page：NO.36 ,Total 41
/SBRB4050TS/SBRB5050TS/MSB3050T3A/MSB3050T3B (Twinsel PV junction box -
SY001 / PV - SY005 / PV - SY015 / PV - RS006 / PV - SY017/PV-SY017-25/PV-SY030).
Please do not try to open the junction box to replace the diode, or even when the
diode problem, please do this work by professionals
11. Grounding
All solar PV module frames and mounting bracket must be properly grounded in
accordance with the appropriate National Electrical Code or local electrical codes
Correct grounding is achieved by continuously connecting the PV module frame
and all metal modules together using the appropriate grounding conductor. The
grounding wire may be copper, copper alloy or other materials that can be used as
conductors and meet the requirements of the national electrical code. It is
recommended to use the copper wire (4-14 mm2 or AWG 6- 12) as the grounding
wire. The signal” ” can be found at the grounding hole position. The ground wire
must also be connected to ground through a suitable ground electrode. The tight
connection of all the joint point should be ensured.
On a grounding hole with a diameter of φ4 mm, use a separate grounding wire and
related accessories to connect the frame and connect the grounding wire to the
ground. M4 x 12mm ground bolts with M4 nuts, star washers and plain washers are
recommended for the aluminum frame, M4 tapping locking screws or ST4.2 tapping
screws are recommended for high-strength alloy steel frames, see fig.11.2, this
ensures that the modules are firmly grounded. You can find the corresponding
product drawing in module datasheet to know the detailed number, size and
position of the grounding holes. The torque applied to ground fixation is
4N· m~8N ·m.
