R***U
发帖数: 1860 | 1 我有一个outlet， 白线居然是24v !?! 黑线是120v ，
黑白的差是96v 啥电器也用不了，这是咋回事呢？
谢谢 |
g*****9
发帖数: 4125 | 2 you are missing a 1 in front of 24, look again.
It is over rated to begin with anyway.
【在 R***U 的大作中提到】
: 我有一个outlet， 白线居然是24v !?! 黑线是120v ，
: 黑白的差是96v 啥电器也用不了，这是咋回事呢？
: 谢谢
|
w*******r
发帖数: 2953 | 3 是240V吧，美国家里有240V和120V两种电压并存的，
好像有的家电用240V的，我不知道为什么。
Property Features
Gas Hookup in Kitchen
220 Volts in Laundry Area |
p*a
发帖数: 3350 | 4 控制sprinker电磁阀的电压是24V交流电
如果在车库或地下室，你那个插座肯定是干这个用的。
【在 R***U 的大作中提到】
: 我有一个outlet， 白线居然是24v !?! 黑线是120v ，
: 黑白的差是96v 啥电器也用不了，这是咋回事呢？
: 谢谢
|
C*******d
发帖数: 15836 | 5 I have exactly the same problem in an outlet in my bathroom. I have been
using meters for a long time and I am sure there is no reading errors. Some
connections in the same outlet have 120V. So I have been puzzled by it for a
long time.
【在 g*****9 的大作中提到】
: you are missing a 1 in front of 24, look again.
: It is over rated to begin with anyway.
|
C*******d
发帖数: 15836 | 6 I don't have sprinkler system in my home, and my problem is in an outlet in
a bathroom on the ground floor near the center of my house.
【在 p*a 的大作中提到】
: 控制sprinker电磁阀的电压是24V交流电
: 如果在车库或地下室，你那个插座肯定是干这个用的。
|
C*******d
发帖数: 15836 | 7 I have done some research online but found no useful information to solve
the problem. Some people say that it could be caused by some connection
problems in the circuit, but it is really hard to believe why 24V occurs
here, in your case and my case. A possibility that I can think of for my
case is that there is one converter attached to my control panel, which I
guess could be for a home security system that I don't use now. I suspect it
uses 24V but there was some wrong connections so that the
【在 R***U 的大作中提到】
: 我有一个outlet， 白线居然是24v !?! 黑线是120v ，
: 黑白的差是96v 啥电器也用不了，这是咋回事呢？
: 谢谢
|
g*****9
发帖数: 4125 | 8 is the 24 V between +Vpeak to -Vpeak ?
What is Vrms?
Hook up your oscilloscope to it and let me know how is its phase in
relationship to black wire?
Some
a
【在 C*******d 的大作中提到】
: I have exactly the same problem in an outlet in my bathroom. I have been
: using meters for a long time and I am sure there is no reading errors. Some
: connections in the same outlet have 120V. So I have been puzzled by it for a
: long time.
|
C*******d
发帖数: 15836 | 9 Ｔhanks! But I don't have an oscilloscope. I only have a common multimeter.
I listed my situation below but please don't waste your time because it is
really messy and confusing. I might be able to figure it out in a couple of
years:)
=======================================================================
I have just checked. That outlet has one ground wire and three white wires
and three black wires. Relative to the ground wire, I measured:
White wire 1: ~2 V
White wire 2: ~2 V
White wire 3: ~19
【在 g*****9 的大作中提到】
: is the 24 V between +Vpeak to -Vpeak ?
: What is Vrms?
: Hook up your oscilloscope to it and let me know how is its phase in
: relationship to black wire?
:
: Some
: a
|
f****i
发帖数: 20252 | 10 上个照片嘛
电压表测的都是有效值，没有哪个显示peak值的。
.
of
【在 C*******d 的大作中提到】
: Ｔhanks! But I don't have an oscilloscope. I only have a common multimeter.
: I listed my situation below but please don't waste your time because it is
: really messy and confusing. I might be able to figure it out in a couple of
: years:)
: =======================================================================
: I have just checked. That outlet has one ground wire and three white wires
: and three black wires. Relative to the ground wire, I measured:
: White wire 1: ~2 V
: White wire 2: ~2 V
: White wire 3: ~19
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s**********d
发帖数: 36899 | |
s**********d
发帖数: 36899 | 12 你把屋里的插座都打开线重新接好了，特别是用锥帽接的线。 |
R***U
发帖数: 1860 | 13 My is in the kitchen, in the middle of the house too.
And there are 4 outlets on the same line has these problem...
in
【在 C*******d 的大作中提到】
: I don't have sprinkler system in my home, and my problem is in an outlet in
: a bathroom on the ground floor near the center of my house.
|
C*******d
发帖数: 15836 | 14 Thanks! It is quite messy. But I think I should allow OP's problem to be
concentrated first since mine is not bothering me. I will make more
investigations to my problem and share with you guys, including pictures, if
I can have it fixed.
【在 f****i 的大作中提到】
: 上个照片嘛
: 电压表测的都是有效值，没有哪个显示peak值的。
:
: .
: of
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C*******d
发帖数: 15836 | 15 It seems that your four white wires are serially connected and there should
be no connection problem among them. But there could be a disconnection
before or after them. If you can find such outlets, you might want to check
their white wire connections, 包括有小塑料冒的那种。
【在 R***U 的大作中提到】
: My is in the kitchen, in the middle of the house too.
: And there are 4 outlets on the same line has these problem...
:
: in
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