3 Installation
MY-A Series (10kVA-20kVA) UPS
User Manual
26
3.2.6 Select Wires
When the cross-sectional area of single wire is greater than 25mm
2
, it is recommended to connect two
wires in parallel.
For the wire cross-sectional area of AC input, output and battery please see the recommended value
in Table3-3. The cross-sectional area of the following cable is only for reference when the user is
connected wire for a length of about 5 meters. If the length of the lead wire exceeds 20 meters, the
cross-sectional area of the conductor wire shall be increased.
Table3-3
Recommended cross-sectional area of wire (unit: mm
2
, environment temperature: 25
℃
)
Type
10kVA
15kVA
20kVA
Mains input live wire (U/V/W)
6
16
16
Mains input neutral wire (N)
6
16
16
Bypass input neutral wire (N)
6
16
16
Bypass input live wire (U/V/W)
6
16
16
Mains output live wire (U/V/W)
6
16
16
Mains output neutral wire (N)
6
16
16
DC input (BATT.+/N/-)
10
2*10
2*10
Grounding wire (PE)
6
16
16
Table3-4
Contrast list between wires and wiring terminals
Wire cross-sectional area (unit: mm
2
)
Wiring terminal type
4
RVS3.5-5
6
RVS5.5-5
10
RNBS8-5
16
RNBS14-6
The wiring terminals recommend type as shown in Figure3-6. If users have additional terminals
required, please check dimensions to ensure proper selection according to Table3-5.
