Sunfree Series- 23 -5.3.2 Connect the cables according to connection marks of L, N and PE.Figure 5.3 Connect the Cables5.3.3 Secure all parts of the AC connector tightly.Figure 5.4 Screw the Connector5.4 Backup Output ConnectionCable Cross-sectional area(mm²) External diameter(mm)Range Recommend4.0-6.0 4.0 4.2~5.3Table 5.3 Recommended Specifications of AC output Cables