Epever XTRA-N Series User Manual page 9

①At ambient temperature 25℃
②At minimum ambient operating temperature
2.3 Wire size
Wiring and installation shall meet current applicable electrical standards.
➢ PV wire size
As the PV system performance may vary due to PV module size, connection method
or sunlight angle, the maximum conductor size can be calculated by Isc
＊ PV systems. See Isc value in PV module specification. When PV modules are
connected in series, Isc is equal to the Isc of PV modules. When PV modules are
connected in parallel, Isc is equal to the sum of Isc of PV modules. The Isc of the PV
array shall not exceed the maximum input current of the PV controller. See table
below:
NOTE: All PV modules in a given system are considered identical.
＊Isc = short circuit current (amps) Voc = voltage of the disconnected circuit.
Model
XTRA1210N
XTRA2210N
XTRA3210N
XTRA4210N
XTRA3415N
XTRA4415N
＊This is the maximum size of wires that will fit into the terminals of the controller.
CAUTION: When PV modules are connected in series, the open circuit
voltage of the PV system must not exceed 92V (XTRA**10N) or 138V
(XTRA
**15N) at an ambient temperature of 25°C.
➢ Battery and load wire size
The size of the battery lead and load lead must match the rated current, see
reference sizes below:
Model
Max. PV input current
10A
20A
30A
40A
30A
40A
Rated Rated
charging discharge
current current
Max. size of PV wires＊
Battery
lead size
9
2
4mm /12AWG
2
6mm /10AWG
2
10mm /8AWG
2
16mm /6AWG
2
16mm /6AWG
2
16mm /6AWG
Stress size
condu
ctor
dimen
sion