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關於總開關選項

Jul 11th 2014, 19:56

我想請問一下有電機電工基礎的朋友

我現在住的地方是租屋處

但現在我想把電熱器的開關關閉

但我發現現在總開關的排列不知道是哪一個

我目前看到的是

┌──┐ ┌──┐ ┌──┐ ┌─┐ ┌─┐
50 50 20 20 20 2020 2020 20

左邊第二個是冷氣就不知道哪個是電熱器開關

怕說關錯整個電源關掉了

不知有人可以解答嗎???

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