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Electrical wiring work
Grounding work
θͱЇʒ˝ЇϑϩɵʪʒͱʪɵцɇαЇɇѣʪʒϑϩɇʪθ˙ͱθцͱЇθϑɇ˙ʪϩц
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 table.
Power condition
Installation place
Voltage to ground is lower than 150V Voltage to ground is over 150V
High humidity
Must perform the grounding work 3.
Note 1)
(Including the case where earth leakage breaker is installed)
Average humidity Perform grounding work 3.
Note 1)
Must perform the grounding work
ߥ
Note 1)
(Including the case where earth
leakage breaker is installed)
Low humidity
Perform grounding work 3, if possible,
for your safety.
Note 2)
Ęͱϩʪߣ࣒ɵͱЇϩ˝θͱЇʒ˝иͱθߥ
࡛ θͱЇʒ˝иͱθЇϑϩɵʪʒͱʪɵцɇʪуΧʪθϩ࣑иϩ˵αЇɇѣʀɇϩͱ࣒
࡛ A˵ʪʀ˙ϩ˵ʪ˝θͱЇʒ˝θʪϑϑϩɇʀʪϑͱиʪθϩ˵ɇߣߢߢצǮ˵ʪϑϩɇ˝ɇʪɇθϩ˵ʪɇɇ˝ʪɵθʪɇʪθ࣑ϩ˵ɇϩʀɇ
cut the electric circuit within 0.5 second in case of a short circuit), allowable grounding resistance should
ɵʪߥߢߧߢߢצ
Note 2) Grounding at dry place
࡛ Ɵ˵ʪ˝θͱЇʒ˝θʪϑϑϩɇʀʪϑ˵ͱЇʒɵʪͱиʪθϩ˵ɇߣߢߢצkЭʪиͱθϑϩʀɇϑʪࡥ˝θͱЇʒ˝θʪϑϑϩɇʀʪϑ˵ͱЇʒɵʪ
ͱиʪθϩ˵ɇߤߧߢצ
Performing the grounding work
Ƹϑʪɇθɇϩʪʒ˝θͱЇʒ˝ʀɇɵʪɵцθʪ˙ʪθθ˝ϩͱϩ˵ʪϑΧʪʀѣʀɇϩͱͱ˙ϩ˵ʪʪʪʀϩθʀʀɇɵʪ˙ͱθϩ˵ʪͱЇϩʒͱͱθЇϩ
࢜
When using the exclusive grounding terminal
(When the grounding terminal is already built
on the house)
࢜
When using grounding of the switch board
Exclusive grounding terminal
Distributing board