8
GB
T
\
pes o
I
control ca
E
les
Wiring trans
P
ission ca
E
les
Types of transmission cable
Shielding wire C
S or CPE S
Cable diameter
More than 1.25 mm²
Length
Less than 2 m
2
M-NET Re
P
ote control ca
E
les
Types of remote control cable Shielding wire M
S
Cable diameter
.5 to 1.25 mm²
Length
Add any portion in excess of 1 m to within the
longest allowable transmission cable length 2
m
MA Re
P
ote control ca
E
les
Types of remote control cable 2-core cable (unshielded)
Cable diameter
.3 to 1.25 mm²
Length
Less than 2 m
Total operating current of the indoor unit
Minimum wire thickness (mm²)
Ground-fault interrupter *1
Local switch (A)
Breaker for wiring
(NFB)
Main cable
Branch
Ground
Capacity
Fuse
F 16 A or less *2
1.5
1.5
1.5
2 A current sensitivity *3
16
16
2
F 25 A or less *2
2.5
2.5
2.5
3 A current sensitivity *3
25
25
3
F 32 A or less *2
4.
4.
4.
4 A current sensitivity *3
32
32
4
Apply to IEC61
-3-3 about max. permissive system impedance.
*1 The Ground-fault interrupter should support inverter circuit.
The Ground-fault interrupter should combine using of local switch or wiring breaker.
*2 Please take the larger of F1 or F2 as the value for F .
F1 Total operating maximum current of the indoor units × 1.2
F2 1 × (Quantity of Type1) C 1 × (Quantity of Type2) C 1 × (Quantity of Type3) C 1 × (Quantity of Others) C
Indoor unit
1
2
Type 1
PLF - BM, PEF - MS, PFF - LRMM
1 .6
2.4
Type 2
PEF - MA
3
1.6
C : Multiple of tripping current at tripping time . 1s
Please pick up C from the tripping characteristic of the breaker.
Example of F2 calculation
*Condition PEF - MS × 4 PEF - MA × 1, C (refer to right sample chart)
F2 1 .6 × 4 3 × 1
14. 5
16 A breaker (Tripping current × 16 A at . 1s)
*3 Current sensitivity is calculated using the following formula.
G1 2 × (Quantity of Type1) 2 × (Quantity of Type2) 2 × (Quantity of Type3) 2 × (Quantity of Others)
3 × (Wire length[km])
G1
Current sensitivity
3 or less
3 mA .1sec or less
1 or less
1 mA .1sec or less
Wire thickness
3
1.5 mm
2
4
2.5 mm
2
56
4. mm
2
66
1
2
3
4
6 8 10
20
C
6000
600
60
10
1
0.1
0.01
SAMPLE
Sample chart
T
ripping T
ime
[s]
Rated Tripping current (x)
Electrical
Z
or
N
