User Manual 5 Electrical Installation
21
Improper cable connection may cause damage to the PV module, combiner
box, and inverter. When wiring, observe the following precautions:
Wire according to the wiring drawing.
Before wiring, use a multimeter to measure the positive and negative
polarity of each channel to ensure that there is no reverse connection.
Before wiring, check the positive and negative polarity of the string and
ensure that there is no ground fault.
Wiring steps
Step 1 Unscrew the waterproof terminals "OUTPUT DC+" and "OUTPUT DC-".
Step 2 Pass the cable with the wire designation "PV1+" through the galvanized
conduit, to the waterproof terminal in the "OUTPUT DC+" area, and
connect to the "PV1+" terminal in the combiner box. The cable should be
reserved with an appropriate length margin so that it can be bent or fixed
easily inside the combiner box.
Cable ("PV1+", "PV2+"… "PV1-", "PV2-", etc.)
Step 3 Stripping. Use wire strippers to strip the insulation layer of the wire to
expose the copper core.
When stripping, do not strip the copper wire to avoid affecting the
electrical performance of the wire.
Choose the European tubular terminal according to the cable. For example:
LT160012, where 16 denotes the crimping wire diameter 16mm
2
, and 12
denotes the crimping tube length of the terminal is 12mm.
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