* 入れる{いれる} can mean _to turn on (a switch, etc.)_
  * 点ける{つける} can mean _to turn on; to switch on; to light up_

I do not see the difference. When would I use which?

* * *

「入れる{いれる}」と「点ける{つける}」の違{ちが}いは何ですか。
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2015-06-19T11:42:42.883
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2015-06-20T01:21:14.473
2015-06-19T17:30:08.383
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question
word-choice
Difference between 入れる{いれる} and つける when expressing 'switch on'
入れる literally means "to put (into)." Thus 電源を入れる = to turn on the power.

つける is used for lighting. Thus 照明を点ける = to turn on the light.
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2015-06-19T16:37:35.873
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2015-06-19T16:37:35.873
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answer
When you are talking about turn on light, you should say つける.

> [電気]{でんき}をつける。

[電気]{でんき} is the common way to say electricity lighting, by the way.

つける also can apply to any kind of stuffs.

> エアコンをつける。 (Turn on the air conditioner.)  
>  テレビをつける。 (Turn on the TV.)  
>  パソコンをつける。 (Turn on the PC.)  
>  [電源]{でんげん}をつける。 (Turn on the power.)

入{い}れる is sometimes interchangeable with つける, but it only works with some
specific objects. The following sentences are good examples of 入{い}れる.

> エアコンを入{い}れる。  
>  [電源]{でんげん}を入{い}れる。

You could say テレビを入{い}れる, but it is not common. You should say テレビをつける which
is much more common. The same goes for パソコン.
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answer