4 Electrical wiring
128
SMGB0077 rev.0 - 01/2013
4.1 Unit electrical wiring and connection
4.1.1 Wiring and main switch selection
Minimum size of the power supply cable wires
N O T E
• Follow local code and regulations to select the installation cables.
• The maximum current value is used to calculate the size of the cables in line with European Standard EN60
335-1.Usenormal,exiblecoatedneoprene(polychloroprene)cables(codeH05RN-F)withadiameternoless
than that indicated in the table.
• The size of the earth wire must be in line with local code IEC 245, no. 571.
• Use a shielded twisted pair cable or shielded pair cable with a diameter of over 0.75 mm
2
(equivalent to KPEV-
S) for the operation wiring between the outdoor and the indoor unit and for operation wiring between the
indoor units.
• Use a shielded twisted pair cable or shielded pair cable for communications between the indoor and outdoor
units. Connect the shielding to the earthing screw in the indoor unit electrical box.
If the power cables are connected in series, use the maximum current value and select the cables according to the
following tables.
• For indoor units:
Model Power supply
Max. current
(A)
Power supply cable size Transmission cable size
EN60 335-1 EN60 335-1
Indoor units
(0.8-6.0) HP
1~ 230V 50Hz
or
1~ 220-240V 50Hz
5.0 0.75 mm
2
0.75 mm
2
Indoor units
(8.0-10.0) HP
10.0 1.5 mm
2
• For KPI units:
Model Power source Maximum current (A)
Cable Size
EN60 335-1
(*1) (mm2)
KPI-252E3E
1~ 230V50Hz
4 1
KPI-502(E/H)3E KPI-502X3E 4 1
KPI-802(E/H)3E KPI-802X3E 4 1
KPI-1002(E/H)3E KPI-1002X3E 8 1.5
KPI-1502(E/H)3E 8 2.5
KPI-2002(E/H)3E 8 2.5
Cable size in relation to current
N O T E
• Use shielded transmission cables between indoor and outdoor units.
• Usenormal,exiblecoatedneoprene(polychloroprene)cables(codeH05RN-F)withadiameternolessthan
that indicated in the table.
• If the current exceeds 63 A, do not connect the cables in series.
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