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Figure 5-9 Coupler
Connect L1 to hole number 1.
Connect L2 to hole number 2.
Connect L3 to hole number 3.
Connect N to hole number 4.
For the SUN2000-28KTL, do not connect the neutral wire to hole number 4.
Figure 5-10 Connecting an AC output cable to the coupler
Step 5 Check that all core wires are properly connected, as shown in Figure 5-11.