Procedure
Step 1 Route the cables through the junction box and prepare cable terminals.
● Before routing cables, check that the sealing strips of the connection box are
intact. Otherwise, the airtightness and waterproof performance of the device
may be 
aected.
● The cable stripping length must meet the requirements. Otherwise, the
airtightness and waterproof performance of the device may be aected.
● The OT terminal size must match the cross-sectional area of the AC output
power cable and M5 screw 
specications.
Figure 5-8 Routing cables
Inner Diameter Rubber Plug
15 mm
22 mm
26 mm
6 mm
8.6 mm
11 mm
 
Step 2 Install AC output power cables and signal cables. (The following uses the RS485
signal cables as an example. For details about other signal cables, see the signal
denitions of communications ports.)
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 5 Electrical Connections
Issue 03 (2023-02-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 43