Growatt MAC 30KTL3-X LV Installation & Operation Manual page 17


It is forbidden to add load between inverter and breaker.

If the cable is thick, after tightening the cable do not shake it and ensure the cable is well-connected
DANGER
and then start the inverter. Loose connection may cause overheat.
Preparation before connection:
1. Disconnect inverter DC switch and AC breaker or switch
2. When the AC wire is tightened, the torque of the PE grounding is 35kgf.cm, and the other torque is 50kgf.cm.
3. Measure the grid voltage and frequency. For detailed parameters, please refer to Chapter 10 Product Specifications.
AC circuit breaker specifications:
PV inverter model
MAC 30KTL3-X LV
MAC 40KTL3-X LV
MAC 50KTL3-X LV
MAC 60KTL3-X LV
MAC 50KTL3-X MV
MAC 60KTL3-X MV
MAC 66KTL3-X MV
MAC 70KTL3-X MV
Cable specifications refer to the following table:
PV inverter
MAC 30KTL3-X LV
MAC 40KTL3-X LV
MAC 50KTL3-X LV
MAC 60KTL3-X LV
MAC 50KTL3-X MV
MAC 60KTL3-X MV
MAC 66KTL3-X MV
MAC 70KTL3-X MV
Notice: The cable must be unbroken.
AC terminal wiring steps:
A. The following figure shows the AC terminal on the inverter. L1, L2, and L3 are three fire channels, and N is a nature
channel.
Note: The screws are matched with M8 screws.
B. Determine the stripping length according to the specifications of the crimping terminal (recommended 16-18mm), crimp
the wire and terminal with the crimping pliers, then pass the cable through the protective casing, lock it on the
corresponding AC terminal, and tighten the terminals Screw.
Circuit breaker specifications
63A/400Vac
80A/400Vac
100A/400Vac
100A/400Vac
80A/ 480Vac
100A/480Vac
100A/480Vac
100A /480Vac
Cross-sectional area（mm
Copper wire Aluminum wire
10-35 25-50
25-35 35-50
25-35 35-50
25-35 35-50
25-35 35-50
25-35 35-50
25-35 35-50
25-35 35-50
）
2
Recommended value（mm
Copper wire
16
30
35
35
30
35
35
35
17 / 57
编号：GR-UM-C -00
）
2
Aluminum wire
25
35
50
50
35
50
50
50
PC