生活用电小常识(2):灯泡和开关你真的会接线吗?你接对了吗?

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灯泡开关对于每个人来说简直是太平常不过了,每天都能见到。接个线那还不是小事一桩么?可事实是真的像你说的那样简单吗?有些事情看起来简单,稀松平常,可要是真的做起来,还真不一定能做对。今天我们就来看看灯泡及开关的正确的接法

灯泡及开关的相关使用涉及到电,只要和电有关,我们就得时刻保持警醒,切莫粗心大意。我们最关心的就是安全的使用有关的电器设备,再方便的家电也应该把安全放在首要的位置。下面我们看看灯泡和开关是怎样与引进家庭的电线相连接呢?

上图就是灯泡和开关的两种接法,左右两种接法当开关闭合时,都能够使灯泡亮起来。也许就有人说了,接上线灯能亮就可以了,管它哪种接法干啥。这两种接法看似都可以,但是区别就在于当开关断开后,灯泡的安全性问题就大不相同了。左图是安全的,右图则存在安全隐患。左图中,开关断开后,灯泡是和零线连接,一般情况下即使人接触了灯泡的内部,也不会触电(即使这样,没事也别去瞎捣鼓灯泡,no zuo no die!!)。右图就不行了,将开关接在零线上,当开关断开后,灯泡其实还带着电呢,只是少了回路灯不亮而已。可千万不要以为灯泡不亮它就不带电,这种想法是极其错误的。当人不小心触碰到灯泡内部结构或者灯泡质量严重不合格的情况下,人就成了回路的一部分了,跟导线也就没啥区别了,然后就发生触电事故了

所以说,灯泡接线谁都会接,可接的安全不安全就因人而异了。你有没有想过你家的灯的开关是接在零线上还是火线上了呢?

只注意开关的接法还不行,还有灯泡的接线呢!!当开关接对了以后,灯泡又该如何接线呢?看下面的图。

上面两个图是灯泡的内部结构及外部结构。相信所有人也都认得,都知道螺纹部分是与零线相连的,顶部触点是与火线相连的。为什么这样设计呢?原因就是,顶部触点设计的接触面比较小,人不容易接触到,保证了安全性,螺纹部分一方面能够使灯泡和灯座紧密连接,另一方面也当作回路的零线端,从而能够使灯泡正常工作。其实灯泡买来就那样,我们是无法改变的,重要的就是灯座的接线决定了这个灯泡在开关断开后是否安全。下面就看看灯座吧。

上面的一张是灯座的内部与灯泡连接的部分,中间的弹起的小簧片就是与灯泡接触的部分,螺纹就是与灯泡的螺纹连接的部分。这貌似也不能改变啥奥。

紧接着的一张图就是接线的部分了。一看也没啥特别的,都是一样的接口。一般人可能就随便选择一个接口接火线,另一个接零线。这种不加思考的连接方式,只有1/2的概率连接正确,1/2的概率也挺高了奥,比考试做单项选择题概率还高呢。可是别忘了,这是用电,不是做题,在用电方面我们应该确保100%的安全。所以说,用电不能存在侥幸心理。那么遇到这么不明显的接口该怎么办呢?其实也没有特别好的办法,只能接上线之后用验电笔验验到底是螺纹部分带点是弹起的小簧片带电。一定要确保小簧片部分是带电的才行。验电笔怎么用我就不用说了吧,自行解决。不过也是要学会安全正确使用验电笔,作为一个基本的生活小技能嘛。

正确接好开关和灯座后,基本是大功告成了,正确的接灯泡的方法我就算是讲完了。最后再说一种灯泡,就是下面这种:

这种带有插头的灯座,通电之后,我们就不那么容易能够正确判断到底是小簧片带电还是螺纹带电了,这和你将插头怎样插到插座相关了。因为插头插到插座正着反着都能够可以,这就使得灯泡连接的正确与否的概率变成了50%了,只能是你自己验证去了。

好了,各位看官,今天的知识我就分享到这了。哪有错误,还请各位指正。如果你觉得还行,劳烦动动手给个赞,转发一下,也算是对小编我这一个多小时敲进去这些东西的一种鼓励。

用电无小事,安全最重要。


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