Hitachi RCIM-2.0FSN - 13.3.2. WIRE SIZE; Recommended Wire Sizes and Selection

ELECTRICAL WIRING
25
13.3.2. WIRE SIZE
 Recomended minimum sizes for field provided wires:
Power Source Cable Size Transmitting Cable Size
Model Power Source Max. Current
EN60 335-1
x
MLFC
y
EN60 335-1
x
MLFC
y
All Indoor Units
230V/1φ/50Hz
5 A 0.75 mm² 0.5 mm²
RAS-2HVRN1 16 A 1.5 mm² 0.75 mm²
RAS-2.5HVRN1
230V/1φ/50Hz
20 A 2.5 mm² 1.25 mm²
0.75 mm² 0.5 mm²
- The above wire sizes marked with x are selected
at the maximum current of the unit according to the
European Standard, EN60 335-1.
- The above wire sizes marked with y are selected at the
maximum current of the unit according to the wire, MLFC
(Flame Retardant Polyflex Wire) manufactured by
HITACHI Cable Ltd. Japan.
 In case that the power cables are connected in series, add each unit maximum current and select according to the next table:
Selection according to
EN60 335-1
Selection according to MLFC (at
cable Temp. Of 60 ºC)
Current i (A) Wire Size (mm²) Current i (A) Wire Size (mm²)
I ≤ 6
0.75
I ≤ 15
0.5
6 < i ≤ 10
1
15 < i ≤ 18
0.75
10 < i ≤ 16
1.5
18 < i ≤ 24
1.25
16 < i ≤ 25
2.5
24 < i ≤ 34
2
25 < i ≤ 32
4
34 < i ≤ 47
3.5
32 < i ≤ 40
6
47 < i ≤ 62
5.5
40 < i ≤ 63
10
62 < i ≤ 78
8
63 < i
z
78 < i ≤ 112
14
112 < i ≤ 147
22
z In case that current exceeds 63 A do not connect cables in series
 NOTE:
- Follow local codes and regulations when selecting field wires, Circuit breakers and Earth Leakage breakers
- Use the wires which are not lighter than the ordinary polychloroprene sheathed flexible cord (code designation
H05RN-F)
 Select the main switches in according to the next table:
Model Power Source
Max.
Current
CB
ELB
(no. poles/A/Ma)
All Indoor Units
230V/1φ/50Hz
5 A 6 A
RAS-2HVRN1 16 A 16 A
RAS-2.5HVRN1
230V/1φ/50Hz
20 A 20 A
2/20/30
ELB: Earth switch; CB: Switch.