No. Cable Type Recommended
Specications
Source
4 PE cable Single-core outdoor
copper-core cable
Conductor cross-
sectional area ≥ 16
mm
2
Prepare
d by
users
Note a: Five-core cables with a cross-sectional area of 5 x 35 mm
2
or 5 x 50
mm
2
are not supported.
If the SUN2000 is used with an optimizer, route the AC and DC power cables
separate to avoid interference to the communication of the optimizer.
5.3 Connecting the PE Cable
● Ensure that the PE cable is securely connected. Otherwise, electric shocks may
occur.
● Do not connect the neutral wire to the enclosure as a PE cable. Otherwise,
electric shocks may occur.
● The PE point at the AC output port is used only as a PE equipotential point, not a
substitute for the PE point on the enclosure.
● It is recommended that silicone sealant or paint be applied around the ground terminal
after the PE cable is connected.
Procedure
Step 1 Crimp OT terminals.
● Avoid scratching the core wire when stripping a cable.
● The cavity formed after the conductor crimp strip of the OT terminal is crimped
must wrap the core wires completely. The core wires must contact the OT
terminal closely.
● Wrap the wire crimping area with heat shrink tubing or PVC insulation tape.
The heat shrink tubing is used as an example.
● When using a heat gun, protect devices from being scorched.
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 5 Electrical Connections
Issue 11 (2023-01-10) Copyright © Huawei Technologies Co., Ltd. 37
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