Toshiba Carrier BMS-SM1280HTLUL Service Manual page 17

<Specifications for Wiring>
Use the following materials to connect signal lines and power lines (locally procured)
No
1 For TCC-LINK
2
3
4 For digital Input / Output connection
For power supply
5
(Between the power unit and central controller)
Line
For RS-485
For power
(120 VAC)
Type / Wire size / Length
2-core shield wire
AWG16 (1.25 mm²), 3200 ft (1000 m) max.
AWG14 (2.00 mm²), 6500 ft (2000 m) max.
2-core shield wire
AWG16 (1.25 mm²), 1600 ft (500 m) max. (total length)
H05RN-F or 245IEC57
AWG18 (0.75 mm²), 160 ft (50 m) max.
AWG22 (0.3 mm²), 320 ft (100 m) max.
AWG18 (0.75 mm²), 60 ft (20 m) max.
17
(total length including
air conditioner area)
2-core wire
4-core wire