Wiring works
Grounding work
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Grounding must be done by a qualified installer for your safety.
Grounding the power cable
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The standard of grounding may vary according to the rated voltage and installation place of a heating pump.
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Ground the power cable according to the following.
Installation place
Power condition
High humidity
Average humidity
Low humidity
Electrical potential of lower than 150V
Perform the grounding
work 3.
Note 1)
Perform the grounding work 3 if
possible for your safety.
Note 1)
Electrical potential of higher than 150V
Must perform the grounding work 3.
Note 1)
(In case of installing circuit breaker)
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Note 1) Grounding work 3
• Grounding must be done by your installation specialist.
• Check if the grounding resistance is lower than 100 Ω.
When installing a circuit breaker that can cut the electric circuit in case of a short circuit, the allowable grounding
resistance can be 30~500 Ω.
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Examples to use cable striper
<Cable striper>
1. Adjust the blade position by coin(the controller is at the bottom side of the tool). Fix the
blade position according to the outer sheath thickness of the power cable.
2. Fix the power cable and tool by using the hook at the top side of the tool.
3. Cut out the outer sheath of the power cable by revolving the tool in the direction of the
arrow, two or three times.
4. At this situation, cut out the outer sheath of the power cable by moving the tool toward
the arrow direction expressed.
5. Slightly bend the wire and pull out the cut part of the outer sheath.
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