© 2021 Sunman (Zhenjiang) Company Limited
。
All rights reserved. Specifications included in this manual are subject to change without notice.
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version 2021A page8 / 20
TM
5.1 Module wiring
Correct electrical wiring
◼
Check that the wiring is correct before starting the system.
If the measured
open circuit voltage (Voc) and short circuit current (Isc) do not match the
specifications provided, there may be a wiring fault.
Correct connection of the MC4 connector
◼
Make sure the MC4 connector is secure and properly connected. The MC4
connector must not be subjected to external pressure. The MC4 connector
can only be used for circuit connection functions and should not be used to
turn the circuit on and off.
◼
The MC4 connector should be kept dry and clean to prevent rain and moisture.
Avoid direct sunlight and water soaking of the MC4 connector.
Use appropriate materials
◼
Depending on local fire, construction and electrical standard, use dedicated
solar cables and suitable MC4 connectors to ensure the electrical and
mechanical performance of the cable.
◼
The solar cable licensed for use is a single-wire cable, 2.5-10mm² (8-14
AWG), 90°C grade, with appropriate insulation to withstand the maximum
possible system open circuit voltage. The appropriate wire size needs to be
chosen to reduce the voltage drop. The wire should be made of copper.
Cable protection
◼
Secure the cable to the mounting system with a cable tie that is UV
resistant. Appropriate measures should be taken to protect the exposed
cable from damage (eg. in a plastic sleeve with UV aging resistance). Avoid
direct exposure of the cable to direct sunlight.
5.2 Grounding
◼
With adhesive tape on the back of SMF modules, there is no metal conductor
for the module or the bracket so no grounding system is required.
