Samsung DVM S VRF Technical Data Book page 132

10. Installation
Electrical wiring work
<When the module combination is in the tables of "Outdoor unit combination">
Main unit
Communication cable
Power·ground cable
Communication cable between outdoor units
Protection tube
Specification of the protection tube
Name
Flexible PVC conduit
Class 1 flexible conduit
Class 1 PVC coated flexible
conduit
132
Sub unit
Temper grade
PVC
Galvanized steel sheet
Galvanized steel sheet and
Soft PVC compound
Sub unit
Power cable
Power/ground cable
Applicable conditions
When the protection tube is installed indoor and not
exposed to outside, because it is embedded in concrete
structure
When the protection tube is installed indoor but ex-
posed to outside so there are risk of damage to the
protection tube
When the protection tube is installed outdoor and
exposed to outside so there are risk of damage to the
protection tube and extra waterproof is needed
ELCB
or
MCCB+
ELB