Note: MC4 or QC4.10 or Amphenol plugs are included in the accessory box. Instructions
for connecting these are provided below:
Note:
1. Please use the PV plugs and connec-
tors supplied in the accessory box.
2. PV cable should be standard
2.5‒4mm
2
.
Note: There will be an audible click when the connector is
correctly inserted into the PV plug.
PV string polarity must not be reversed during connection, to prevent damage to the
inverter.
Before connecting PV panels/strings to the inverter, please make sure the following requirements
are met:
• The total short-circuit current of a PV string must not exceed inverter's max DC current.
• The PV string's minimum isolation resistance to ground must exceed 18.33kΩ to prevent risk of
shock.
• The PV string must not be connected to an earth/grounding conductor.
• Use the correct PV plugs supplied in the accessory box. (BAT plugs are similar to PV plugs. Please
confirm you have chosen the correct plugs.)
Step 1
Step 3
2.4 Electrical Wiring Connection
2.4.1 PV Wiring Connection
Prepare the PV cables and PV plugs.
Screw on the cap and plug it into the side of the inverter.
2.5-4mm
2
7mm
2.5-4mm
2
7mm
Step 2
Connect the PV cables to the PV connectors.
Note:
1. PV cables must be tightly crimped into
the connectors.
2. For Amphenol connectors, the limit
buckle must not be pressed .
3. There will be an audible click when the
connector is correctly inserted into the
PV plug.
MC4 / QC4.10 Series AMPHENOL Series
MC
MC
* To connect compatible lithium batteries (LG / PYLON / BYD / GCL / DYNESS / ALPHA), please
refer to the battery connection information in the EM Quick Installation Instructions.
Note:
Please make sure the battery's polarity
(+/-) is not reversed.
Ensure the breaker is off and the battery's nominal voltage meets EM series specifica-
tions before connecting the battery to the inverter. Ensure the inverter is fully isolated
from PV and AC power.
2.4.2 Battery Wiring Connection
Please take care to avoid risk of electric shock or chemical hazards.
Make sure there is an external DC breaker (≥63A) connected to batteries without a built-in DC
breaker.
The capacity of a lithium battery (pack) must be 50Ah or larger. Battery cabling requirements are
as per Figure 2.4.2-1.
BA
C
Figure 2.4.2-1
Battery wiring connection process
Step 1
Grade
A
B
C
Description
Outside Diameter Insulation
Isolation Section
Conductor Core Section
Value
10-14 mm
NA
20-35 mm
2
Prepare battery cables and accessories and insert
the battery power cable into the battery cover.
Note:
1. Please use the accessories supplied in the
accessory box.
2. The battery power cable should be
20‒35mm
2.
Step 2
Prepare the battery terminals
• Strip the cable sleeve to expose 10mm of metal core.
• Use an appropriate crimping tool to tightly compress the
battery terminal onto the exposed metal core.
Step 3
Connect the battery terminal to the inverter.
Hexagon Head Screw
Fastening torsion 6-8N.m
Pan Head Screw
Cable
Waterproof Ring
Battery Terminal
Insulator
Screw Cap
10
09
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