Samsung CNH 4DB Series Technical Data Book page 117

Installation
Outdoor-to-indoor power and communication
cables specifications
• Indoor unit :
4WAY CST(AC***BN4***)
Mini4way CST(AC***BNN***)
• Indoor unit :
Duct(AC***BNL***, AC***BNH***)
• Indoor unit :
RAC(AC***BNT***, AC***BNA***)
Power supply
• Power supply cords of parts of appliances for outdoor
use shall not be lighter than polychloroprene sheathed
flexible cord. (Code designation IEC:60245 IEC 57 /
CENELEC: H05RN-F)
• When installing the indoor unit in a computer room or
network room, use the double shielded (tape aluminum /
polyester braid + copper ) cable of FROHH2R type.
Indoor power supply
Max/Min (V) Indoor power cable
Communication cable