Table of Contents
Advertisement
Electrical Wiring
2. Communication and Power Lines
1) Communication cable
• Types : shielding wire
• Cross section : over 1.0~1.5mm
• Insulation material : PVC
• Maximum allowable temperature: 60°C
• Maximum allowable line length: 300m
2) Remote control cable
• Types : 3-core cable
3) Central control cable
• Types : 4-core cable (Shielding wire)
• Cross section : over 1.0~1.5mm
• Insulation material : PVC
4) Separation of communication and power lines
• If communication and power lines are run 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.
In case of install communication and power line together, the distance should be over 50mm
Distance from power of other facility
Current capacity of power line
100V or more
Note:
1. The figures are based on assumed length of parallel cabling up to 100m. For length in excess of 100m
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 shocks, the earthing of the
apparatus must be carried out by a qualified person.
• Use a power wire pipe for the power wiring.
40
Outdoor Unit
2
2
10A
50A
100A
Exceed 100A
Spacing
300mm
500mm
1000mm
1500mm
Advertisement
Table of Contents
