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PV module. ET Solar recommends that installers use only sunlight resistant cables
for direct current (DC) wiring in PV systems. The recommended minimum wire
size should be 4 mm²(12AWG) and must be subject to the local national codes
and regulations.
The connecting cables must not cross each other and must be kept away from
direct sunlight, heat source and any static pool of water. The cables should be
secured by the modules mounting structure and should maintain a distance of
at least 25 mm from one another with no possibility of coming into contact.
5.3 Connectors
The connectors should be kept dry and clean. Do not attempt to make
electrical connections between wet, soiled, or otherwise faulty connectors.
Faulty connections can result in electrical shocks and arcs.
Only compatible connectors can be mated,i.e. from the same vendor and
model, shall be used;(if you need to use different types of connectors, please
consult customer service of ET Solar);
5.4 Bypass Diodes
ET Solar module junction boxes contain bypass diode which is parallel connection
with the PV cell strings. if hot spot occurred, the diode will come into operation to
stop the main current from flowing through the hot spot cells in order to prevent
module over-heated and performance loss. Notice, bypass diode is not the
overcurrent protection device. If the diode is suspected to be defective, the
installer or system providers shall contact ETSolar. Please do not try to open the
junction box by yourself. ET Solar module junction boxes contain two type Schottky
diodes, PV3045 and PV4045.
5.5 General electrical installation
Do not use modules of different configurations in the same system.
This module is supplied with connectors for electrical connections.
Refer to local code to determine appropriate types and temperature ratings
of conductors. Wiring should be 4 mm²(minimum), and must be temperature
rated at 90 °C (minimum).
Completely cover system modules with an opaque material to prevent
electricity from being generated while disconnecting conductors.
Refer to local code to determine over current, conductor ampacity and size
requirements.
Installation shall be in accordance with local code.
For best performance, ensure that positive and negative DC wires run closely
together to avoid loops.
WARNING!
Electrical shock hazard!
Do not touch bare conductors or other potentially energized parts.
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