Hitachi RAS-(2-3)HVRN(S)(2), Service Manual

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4 Electrical Wiring
98
SMGB0064 rev.0 - 08/2011
Wire size in relationship to the intensity
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
LFC (at cable Temp. Of 60 °C)
Current I(A) Wire Size (mm
2
) Current I(A) Wire Size (mm
2
)
I ≤ 6 0.75 1 ≤ 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 (3*) 78 < I ≤ 112 14
— — 112 < I ≤ 147 22
N O T E
• (3*): In case that the current exceeds 63 A do not connect cables in series.
C A U T I O N
• Use shielded wires for transmission wires between the indoor and the outdoor units and connect the shielded
part to the ground screw in the electrical box of the indoor unit as shown below.
• Use wires not lighter than the ordinary neoprene (polychloroprene) sheathed flexible cord (code designation
H05RN-F).
Main switches types
Select the main switches (current breaker) in according to the next table:
Model Power Source Max. Current (A) CB (A)
ELB
(no. poles/A/Ma)
All Indoor Units (1*)
1~ 230V 50Hz
5 6 2/40/30
RAS-2HVRN1E 13 16
2/20/30
RAS-2.5HVRN1 16 25
RAS-3HVRNS 18 25
2/40/30
RAS-4HVRNS1E 18/24 32
RAS-5HVRNS1E 26 32
RAS-6HVRNS1E 26 32
RAS-4HRNS2E
3N~ 400V 50Hz
13 20
4/40/30
RAS-5HRNS2E 13 20
RAS-6HRNS2E 13 20
RAS-8HRNSE 20
40
RAS-10HRNSE 23
N O T E
• (1*): (Except RPI-(8.0/10.0)).
• ELB: Earth leakage breaker.
• CB: Circuit breaker