User Manual 5 Electrical Installation
31
Relevant standards must be observed.
Ground cables must be connected firmly with both device and ground
terminals.
Ground resistance shall be measured after finishing ground connections,
and the measured values should not be over 1Ω.
Description of Wiring Terminals
The internal grounding points of the combiner box are shown in the following
figure.
On site, select the appropriate grounding holes according to actual conditions.
Tab. 5-1 Wiring requirements
Recommended cable cross section
Prerequisite
After the grounding connection is completed, it is necessary to ensure that the
grounding cable has certain height difference to prevent rainwater, steam, etc.
from accumulating and flowing into the combiner box through the grounding
waterproof terminals. (The picture is for reference only)
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