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旧 Nov 6th, 2012, 12:12     #1
wzralg
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Lightbulb 【求教】楼梯间电灯线路

楼梯间的灯是双开关,因为与照明用电相连的其它灯都不工作了,因此查看楼梯间的照明线路,发现照明电进线的电压是240V,感觉很震惊,但经过几股电线连接后通到楼梯灯的却是120V。我想正因为如此,当初建筑商或者前房主安装的时候并没发现这个问题。现在感觉很棘手,我想知道:
1. 这条线路是怎样从电盘里接出来的?怎样链接才能改变成110的。
2. 这种高压经过怎样的连接才能转为120V呢?我真想不通。

谢谢!

http://www.chinasmile.net/forums/image.php?type=sigpic&userid=45070&dateline=1238991010
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旧 Nov 6th, 2012, 12:29   只看该作者   #2
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默认

哈哈, 电工是技术活, 不是是个人就会弄的。 人家的接线是正确的。
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旧 Nov 6th, 2012, 13:37   只看该作者   #3
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默认

不可能是240v,你肯定量的不对,3 way sw是2根110v的火线 + 零线 + 地线。
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旧 Nov 6th, 2012, 14:57   只看该作者   #4
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默认

3way其实很简单, 网上找几个图,就看明白了, 这里的switch已经为3way设计好了, 这是关键。
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旧 Nov 7th, 2012, 00:53   只看该作者   #5
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不可能是240v,你肯定量的不对,3 way sw是2根110v的火线 + 零线 + 地线。
供电就是一根120v和一根零线。
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旧 Nov 7th, 2012, 07:55   只看该作者   #6
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默认

哈哈哈,谢谢几位大师的提醒。我太菜了~
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旧 Nov 7th, 2012, 10:08   只看该作者   #7
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默认

我发现有些专业电工也有很烂的,我家的这个线就接的乱七八糟,灯和插座装一起,插座和开关装一起,铜线和铝线直接拧在一起,拔插座能把铁盒子拔出来一半.........
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旧 Nov 7th, 2012, 14:39   只看该作者   #8
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默认

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我发现有些专业电工也有很烂的,我家的这个线就接的乱七八糟,灯和插座装一起,插座和开关装一起,铜线和铝线直接拧在一起,拔插座能把铁盒子拔出来一半.........
呵呵,请教一下铜线和铝线应该怎么连接呢?我还真不懂这些基本常识。
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旧 Nov 7th, 2012, 20:42   只看该作者   #9
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呵呵,请教一下铜线和铝线应该怎么连接呢?我还真不懂这些基本常识。
我也不知道这里的铜线和铝线怎么连接的,反正觉得不能直接用帽子拧在一块,铝线都不不能直接接铜开关,那怎么能直接和铜线直拧在一块呢?这有点矛盾。这个问题要请教专业持牌电工。
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旧 Nov 8th, 2012, 01:25   只看该作者   #10
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默认

还有这种说法?铝线不能直接接铜开关?长见识了,谢谢!
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旧 Nov 8th, 2012, 09:11   只看该作者   #11
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默认

明白人怎么没一个来指导一下呢?
三棵进线,分别为黑、红、白三个颜色,其中黑对地是120伏;白对地120伏;红色的估计是虚头断开了,红对地是0伏。将白线和红线接入一个灯泡后灯泡不亮,用试电笔测试红线是有电的。然后用白线和地线接入灯泡,灯泡亮了,由此判断红线是一个断线。
黑对白是240伏,黑对红是93伏,白对红是93伏。
现在的问题是:
1. 如果红线是断头,是否红对地也应该是120伏?
2. 这三棵线中哪个对哪个应该是120伏呢?
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旧 Nov 8th, 2012, 10:39   只看该作者   #12
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还有这种说法?铝线不能直接接铜开关?长见识了,谢谢!

http://www.youtube.com/watch?v=x920gPEkWhQ
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旧 Nov 8th, 2012, 11:00   只看该作者   #13
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明白人怎么没一个来指导一下呢?
三棵进线,分别为黑、红、白三个颜色,其中黑对地是120伏;白对地120伏;红色的估计是虚头断开了,红对地是0伏。将白线和红线接入一个灯泡后灯泡不亮,用试电笔测试红线是有电的。然后用白线和地线接入灯泡,灯泡亮了,由此判断红线是一个断线。
黑对白是240伏,黑对红是9...
线是错的,标准做法:黑线火线110v,红线火线110v(有时也可以当开关线0v), 白线零线,裸皮地线。
别用万用表,这屋里都是110v的,碰到这样瞎接的电死了都不知道怎么回事。
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旧 Nov 8th, 2012, 12:38   只看该作者   #14
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线是错的,标准做法:黑线火线110v,红线火线110v(有时也可以当开关线0v), 白线零线,裸皮地线。
别用万用表,这屋里都是110v的,碰到这样瞎接的电死了都不知道怎么回事。
house标准电压120/240, 不是110v 了。
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旧 Nov 8th, 2012, 12:42   只看该作者   #15
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默认

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明白人怎么没一个来指导一下呢?
三棵进线,分别为黑、红、白三个颜色,其中黑对地是120伏;白对地120伏;红色的估计是虚头断开了,红对地是0伏。将白线和红线接入一个灯泡后灯泡不亮,用试电笔测试红线是有电的。然后用白线和地线接入灯泡,灯泡亮了,由此判断红线是一个断线。
黑对白是240伏,黑对红是9...
你上照片吧。 你这是打开的哪?
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感谢 lzq
此篇文章之用户:
wzralg (Nov 10th, 2012)
旧 Nov 8th, 2012, 12:54   只看该作者   #16
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house标准电压120/240, 不是110v 了。
单项240V? 哪里?
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旧 Nov 8th, 2012, 13:18   只看该作者   #17
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作者: walkway 查看帖子
单项240V? 哪里?
火线对零线是120v, 火线和火线之间是240v。
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旧 Nov 8th, 2012, 13:23   只看该作者   #18
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火线对零线是120v, 火线和火线之间是240v。
把你话换句说,单项都是120v的,所以用试电笔找火线就行了,我有说错吗?
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旧 Nov 8th, 2012, 13:33   只看该作者   #19
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把你话换句说,单项都是120v的,所以用试电笔找火线就行了,我有说错吗?
你说的是110v, 加拿大没有这标准电压。
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旧 Nov 8th, 2012, 14:32   只看该作者   #20
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你说的是110v, 加拿大没有这标准电压。
加拿大标准电压是110v-125v吧?
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