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Step 2. Use a flathead tool to remove the knockout hole fillers. (Inserting into the hole and anti-clock
rotation)
Figure 5.7. Removing the knockout hole fillers
Step 3. According to the silkscreens, insert the grid cables through the corresponding knockout hole and
insert them to corresponding terminals L1, L2, L3, N, and PE. Then, use a standard torque to tighten
the screws on the terminals to secure the cable connection.