Hitachi RAS-(4-12)HRNM(2)(E) - Wire Size in Relationship to the Intensity; Main Switches Types

4 Electrical Wiring
96
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 exible 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
RPI-8-10 10 10
RAS-3HVRNM2E
1~ 230V 50Hzz
18.5 25
RAS-4HVRNM2E 26 32
RAS-5HVRNM2E 26 32
RAS-6HVRNM2E 26 32
RAS-4HRNM2E
1~ 230V 50Hz
13 20
4/40/30
RAS-5HRNM2E 13 20
RAS-6HRNM2E 13 20
RAS-8HRNME
3N~ 380/415V 50Hz
13.2 20
RAS-10HRNME 17.1 20
RAS-12HRNME 21.2 30
N O T E
• (1*): (Except RPI-8.0-10.0).
• ELB: Earth leakage breaker.
• CB: Circuit breaker