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Multi V 5
8. Electrical Wiring
8.1.3 Communication and Power Lines
1. Communication cable
•
Types : shielded cables
•
Use wires of size : over 1.0 ~ 1.5 mm
•
Maximum allowable temperature: 60°C (140°F)
•
Maximum allowable line length: under 1 000m (3 281 ft)
2. Remote control cable
•
Types : 3-core cable
3. Central control cable
Product type
ACP&AC Manager
AC Smart
Simple central controller
AC Ez
4. Separation of communication and power lines
•
If communication and power lines are installed alongside each other then there is a strong likelihood of
operational faults developing due to interference in the signal wiring caused by electrostatic and
electromagnetic coupling.
The tables below indicates our recommendation as to appropriate spacing of communication and power lines
where these are to be run side by side
Current capacity of power line
100V or more
Note
1. The figures are based on assumed length of parallel cabling up to 100 m(328 ft). For length in excess of 100
m(328 ft) the figures will have to be recalculated in direct proportion to the additional length of line involved.
2. If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should
be increased.
•
If the lines are laid inside conduits then the following point must also be taken into account when grouping
various lines together for introduction into the conduits
•
Power lines(including power supply to air conditioner) and signal lines must not be laid inside the same
•
In the same way, when grouping the lines power and signal lines should not be bunched together.
CAUTION
•
If apparatus is not properly earthed then there is always a risk of electric shock, the grounding of the apparatus
must be carried out by a qualified person.
2
-3
(1.55 × 10
~ 2.32 × 10
Wire type
2-core cables
(shielded)
2-core cables
(shielded)
4-core cables
(shielded)
4-core cables
(shielded)
10A
50A
100A
Exceed 100A
Installation of Outdoor Units
-3
2
in
)
Diameter
1.0 ~ 1.5 mm
-3
(1.55 × 10
~ 2.32 × 10
1.0 ~ 1.5 mm
-3
(1.55 × 10
~ 2.32 × 10
1.0 ~ 1.5 mm
-3
(1.55 × 10
~ 2.32 × 10
1.0 ~ 1.5 mm
-3
(1.55 × 10
~ 2.32 × 10
Spacing
300mm (11-13/16 in)
500mm (19-11/16 in)
1 000mm (39-3/8 in)
1 500mm (59-1/16 in)
2
-3
2
in
)
2
-3
2
in
)
2
-3
2
in
)
2
-3
2
in
)
37
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