Delta M100A 280 Operation And Installation Manual page 38

Installation
Figure 3-16: location of H4 connectors to connect array wiring (DC)
- Before DC wiring maintenance, Please make sure the AC breaker and two DC
switches that are belonging to the inverter are all in "OFF."
- Each PV string could have a high voltage in the poles. Ensure to offer the proper
safety protection for the operators during the DC wiring installation. Safety
protection has to fulfill the standard of PV system installation.
CAUTION !
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