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20
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Electrical installation
20.1.6 Specifications of standard wiring components
Component
Power supply cable MCA
Voltage
Phase
Frequency
Wire size
Interconnection
Voltage
cable
Wire size
Recommended field fuse
Earth leakage circuit breaker/ residual
current circuit breaker
(a)
MCA=Minimum circuit ampacity. Stated values are maximum values.
Component
Power supply cable MCA
Wire size
Recommended field fuse
(a)
MCA=Minimum circuit ampacity. Stated values are maximum values.
Installer and user reference guide
132
For standard combinations
RYMA5 RXYA8 RXYA10 RXYA12 RXYA14 RXYA16 RXYA18 RXYA20
(a)
15 A
Only use harmonised wire providing double insulation and suitable for
20 A
RXYA10
(a)
30 A
Please use the tables above to specify the requirements for the power supply
wiring.
For non-standard combinations
Calculate the recommended fuse capacity.
Formula
Calculate, by adding the minimum circuit amps of each used unit
(according to the table above), multiply the result by 1.1 and
select the next higher recommended fuse capacity.
Single outdoor units
16.1 A
22 A
24 A
380-415 V
5 core cable
Must comply with national wiring regulation.
Wire size based on the current, but not less than:
2.5 mm²
220-240 V
applicable voltage.
2-core cable
0.75-1.5 mm²
25 A
32 A
Must comply with national wiring regulation.
Multi outdoor units
RXYA13
31.1 A
5 core cable
Must comply with national wiring regulation.
Wire size based on the current, but not less than:
6 mm²
40 A
27 A
31 A
3N~
50 Hz
4 mm²
6 mm²
32 A
40 A
RXYA16
RXYA18
32.2 A
38.1 A
10 mm²
35 A
42 A
10 mm²
50 A
RXYA20
40.1 A
50 A
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
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