LogicPower EA33KTLSI - Electrical Connection; Electrical Cable Sizing; PV Input Cable Preparation

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4 Electrical Connection
DANGER
 Before the electrical connection, make sure that the inverter is undamaged and in a
safe state.
 Before connecting DC terminal cables, ensure the inverter DC switch is
disconnected or PV panels are covered with lightproof material.
 All cables must be firmly connected, well insulated and meet the specification
requirements.
 The open-circuit voltage of configured PV arrays must be less than 900V.
WARNING
 Electrical connection should only be made by electrically qualified personnel.
 Prohibit electrical installation under the state of electricity, otherwise it may result in
damage to inverter or danger to life.
TIPS
Connecting the inverter to the electrical utility grid should be approved by the local
utility company
4.1 Cable sizes
Cable
Cable size (mm2)
PV array DC＋
Provide 6 inputs, cable diameter > 4mm
2
PV array DC-
Provide 6 inputs, cable diameter > 4 mm
2
Power grid L1 phase
Provide single input, cable diameter > 10 mm
2
Power grid L2 phase
Provide single input, cable diameter > 10 mm
2
Power grid L3 phase
Provide single input, cable diameter > 10 mm
2
Power grid N
Cable diameter > 10 mm
2
Ground wire
Cable diameter > 8 mm
2
TIPS
 The above table of cable size is based on UL, If use other cables, refer to the
standard for reasonable replacement.
 For actual installation cable size, refer to the output value of equipment
specifications.
4.2 Making PV input cable and assembling connector
Step 1: Strip the insulation layer from DC cable about 6mm to expose copper wire, insert the copper wire into the metal
tube core of connector and press it firmly with a crimping plier.
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