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8.3 Safety device requirment
1. Select the wire diameters( minimum value) individually for each unit based on the table 8-1 and table 8-2，
where the rated current in table 9-1 means MCA in table 9-2. In case the MCA exceeds 63A, the wire diameters
should be selected according to the national wiring regulation.
2. Select circuit breaker that having a contact separation in all poles not less than 3 mm providing full
disconnection，where MFA is used to select the current circuit breakers and residual current operation
breakers:
Table 8-1
Table 8-2
Outdoor Unit
System
Voltage
Hz
(V)
1
4kW
50
220-240
1
6kW
50
220-240
1
8kW
50
220-240
1
10kW
50
220-240
MCA : Max. Circuit Amps. (A)
TOCA : Total Over-current Amps. (A)
MFA : Max. Fuse Amps. (A)
MSC : Max. Fuse Amps. (A)
FLA : In nominal cooling or heating test condition，the input Amps of compressor where MAX. Hz
can operate Rated Load Amps. (A);
KW : Rated Motor Output
FLA : Full Load Amps. (A)
8.4 Remove the switch box cover
Maximum overcurrent
protector(MOP)
Wiring size
Stated values are maximum values (see electrical data for exact values).
Rated current
Nominal cross-sectional area (mm )
of appliance:（A）
Flexible cords
3
0.5 and 0.75
≤
3
and
6
0.75 and 1
>
≤
6
and
10
1
and 1.5
>
≤
10 and
16
1.5 and 2.5
>
≤
16 and
25
2.5 and 4
>
≤
25 and
32
4
and 6
>
≤
32 and
50
6
and 10
>
≤
50 and
63
10
and 16
>
≤
Power Current
Min.
Max.
MCA
TOCA
(V)
(V)
(A)
(A)
198
254
14
18
198
254
14
18
198
254
19
19
198
254
19
19
Unit(kW)
16
2
Cable for fixed wiring
1
and 2.5
1
and 2.5
1
and 2.5
1.5 and 4
2.5 and 6
4
and 10
6
and 16
10 and 25
Compressor
MFA
MSC
RLA
(A)
(A)
(A)
-
30
11.3
-
30
11.3
-
30
16.7
-
30
16.7
NOTE
4/6
8/10
18 A
19 A
4 mm
4 mm
2
2
OFM
KW
FLA
(A)
0.094
0.9
0.094
0.9
0.195
1.7
0.195
1.7
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