2.2 Wire specification and breaker type
For wiring and installation ways,it is required to observe national and local electrical specification
requirements.
Recommended wiring specification and breaker type for photovoltaic array: the output current of the
photovoltaic array is affected by the form, connection way and illumination angle of photovoltaic array, therefore
the minimum wire diameterof the photovoltaic array is calculated based on the short circuit currentof
photovoltaic array. Please refer to the short circuit current value in the specification of photovoltaic array (the
short circuit current keeps unchanged for the photovoltaic arrays in series connection; the short circuit current
of photovoltaic arrays in parallel connectioni s the sum of short circuit currentof all components connected in
parallel); the short circuit current of the array cannot exceed maximumi nput currentof PV.
Please refer to the table below for PV input wire diameter and switch:
Type
Recommended wire
diameter
Maximum PV input
current
Recommended types
of air switchor breaker
HF/MF4830S60-H
6mm
2
/10AWG
18A
2P—25A
HF/MF4850S80-H
6mm
2
/10AWG
18A
2P—25A
Note: the voltage in parallel shall not exceed maximum PV input open-circuit voltage.
Please refer to the table below for recommended AC input wire diameter and switch:
Type
Recommended wire
diameter
Maximum bypass
input current
Recommended types
of air switchor breaker
HF/MF4830S60-H
10mm
2
/7AWG
40A
2P—40A
HF/MF4850S80-H
10mm
2
/7AWG
40A
2P—40A
Note: there is already a corresponding breaker at input connection point of mains supply. Therefore, no
breaker may be equipped.
Recommended input wire diameter and switch type for battery
Type
Recommended
wire diameter
Rated
battery
discharge
current
Maximum
charge current
Recommended
types
of air switch or
breaker
HF/MF4830S60-H
20mm
2
/4AWG
85A
60A
2P—120A
HF/MF4850S80-H
30mm
2
/2AWG
125A
80A
2P—200A
Solar Energy Storage Inverting & Control All-In-One Machine 9
