Samsung AM***XMDCH Series Installation Manual page 35

Installing grounding wire
Grounding must be done by a qualified installer for your safety.
Use the grounding wire by referring to the specification of the electric cable of the outdoor unit.
Grounding the power cable
The standard of grounding may vary according to the rated voltage and installation place of the air conditioner.
Ground the power cable according to the following.
Installation place
Power condition
Voltage of lower than 150V
Voltage of higher than 150V
1) Grounding work 3
Grounding must be done by your installation specialist.
NOTE
Check if the grounding resistance is lower than 100Ω. When installing a circuit breaker that can cut the electric
circuit within 0.5 second in case of a short circuit, the allowable grounding resistance should be 30~500Ω.
2) Grounding at dry place
The grounding resistance is should be lower than 100Ω. (It should not be higher than 250Ω)
- Use the rated grounding wire by referring to the specification of the electric cable of the outdoor unit.
Performing the grounding work
Use the grounding wire by referring to the specification of the electric cable for the outdoor unit.
When using the terminal for grounding only
High humidity
Perform the grounding work
Must perform the grounding work 3.
(In case of installing circuit breaker as well)
Earth terminal
Average humidity
Note 1)
3.
When using grounding of the switch board
Low humidity
Perform the grounding work 3 if
Note 2)
possible for your safety.
Note 1)
Switch Board
35