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Small wiring puzzle Aaron Fude 05-10-2008
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Posted by John Grabowski on May 10, 2008, 8:41 pm

> I'm sure you guys will crack it instantly.
>
> I'm replacing a light and the switch that controlled it. I removed the
> switch first. The switch connected a black and a white wire that came
> in the same sheath. The white one was hot. (I know that sometimes this
> means something, but what?)
>
> Then when I removed the light I discovered that it, too, had a black
> and a white wire connected to it, and the black one is hot. Now that
> the light is disconnected, the black whire is still hot, but the wire
> that used to be connected to the switch is now dead.
>
> There are no other wires in either electrical box.
>
> I'm racking by brain, but can't figure out how everything was
> connected.
>
> Many thanks in advance!
>
> Aaron



I'm thinking that there is another junction box somewhere where these wires
could be connected. Is there another light fixture in the same room? Is
there an accessible attic above so you can go see if there is a junction box
up there? Did an electrical box get buried during a remodel?


Posted by RBM on May 10, 2008, 10:03 pm

>
>> I'm sure you guys will crack it instantly.
>>
>> I'm replacing a light and the switch that controlled it. I removed the
>> switch first. The switch connected a black and a white wire that came
>> in the same sheath. The white one was hot. (I know that sometimes this
>> means something, but what?)
>>
>> Then when I removed the light I discovered that it, too, had a black
>> and a white wire connected to it, and the black one is hot. Now that
>> the light is disconnected, the black whire is still hot, but the wire
>> that used to be connected to the switch is now dead.
>>
>> There are no other wires in either electrical box.
>>
>> I'm racking by brain, but can't figure out how everything was
>> connected.
>>
>> Many thanks in advance!
>>
>> Aaron
>
>
>
> I'm thinking that there is another junction box somewhere where these
> wires could be connected. Is there another light fixture in the same
> room? Is there an accessible attic above so you can go see if there is a
> junction box up there? Did an electrical box get buried during a remodel?

I agree, the op either missed the second cable and splice in one of the
junction boxes or there is obviously a third box, and they mistakenly broke
the neutral through the switch>



Posted by metspitzer on May 10, 2008, 11:13 pm

>
>>
>>> I'm sure you guys will crack it instantly.
>>>
>>> I'm replacing a light and the switch that controlled it. I removed the
>>> switch first. The switch connected a black and a white wire that came
>>> in the same sheath. The white one was hot. (I know that sometimes this
>>> means something, but what?)
>>>
>>> Then when I removed the light I discovered that it, too, had a black
>>> and a white wire connected to it, and the black one is hot. Now that
>>> the light is disconnected, the black whire is still hot, but the wire
>>> that used to be connected to the switch is now dead.
>>>
>>> There are no other wires in either electrical box.
>>>
>>> I'm racking by brain, but can't figure out how everything was
>>> connected.
>>>
>>> Many thanks in advance!
>>>
>>> Aaron
>>
>>
>>
>> I'm thinking that there is another junction box somewhere where these
>> wires could be connected. Is there another light fixture in the same
>> room? Is there an accessible attic above so you can go see if there is a
>> junction box up there? Did an electrical box get buried during a remodel?
>
>I agree, the op either missed the second cable and splice in one of the
>junction boxes or there is obviously a third box, and they mistakenly broke
>the neutral through the switch>
>

Sounds like to me he is just trying to get a voltage reading across
the switch.

If he took a switch out he would only have 2 wires to put back. You
can't really mess it up.

When he took the light down, there is only 2 wires to put back too.

Seems like he is mistaken of the meter readings.


Posted by RBM on May 10, 2008, 10:36 pm

>
>>
>>>
>>>> I'm sure you guys will crack it instantly.
>>>>
>>>> I'm replacing a light and the switch that controlled it. I removed the
>>>> switch first. The switch connected a black and a white wire that came
>>>> in the same sheath. The white one was hot. (I know that sometimes this
>>>> means something, but what?)
>>>>
>>>> Then when I removed the light I discovered that it, too, had a black
>>>> and a white wire connected to it, and the black one is hot. Now that
>>>> the light is disconnected, the black whire is still hot, but the wire
>>>> that used to be connected to the switch is now dead.
>>>>
>>>> There are no other wires in either electrical box.
>>>>
>>>> I'm racking by brain, but can't figure out how everything was
>>>> connected.
>>>>
>>>> Many thanks in advance!
>>>>
>>>> Aaron
>>>
>>>
>>>
>>> I'm thinking that there is another junction box somewhere where these
>>> wires could be connected. Is there another light fixture in the same
>>> room? Is there an accessible attic above so you can go see if there is
>>> a
>>> junction box up there? Did an electrical box get buried during a
>>> remodel?
>>
>>I agree, the op either missed the second cable and splice in one of the
>>junction boxes or there is obviously a third box, and they mistakenly
>>broke
>>the neutral through the switch>
>>
>
> Sounds like to me he is just trying to get a voltage reading across
> the switch.
>
> If he took a switch out he would only have 2 wires to put back. You
> can't really mess it up.
>
> When he took the light down, there is only 2 wires to put back too.
>
> Seems like he is mistaken of the meter readings.

I think he's just trying to figure how it works, not so much, how to put it
back. As you said, he really can't go wrong. I belive he's thinking that
with the switch wires disconnected, he shouldn't still have a hot wire at
the light, which is correct, except for when the neutral was switched
instead of the hot
>



Posted by Aaron Fude on May 10, 2008, 10:49 pm
>
>
>
>
>
>
>
>
.
> >>>> I'm sure you guys will crack it instantly.
>
> >>>> I'm replacing a light and the switch that controlled it. I removed th=
e
> >>>> switch first. The switch connected a black and a white wire that came=

> >>>> in the same sheath. The white one was hot. (I know that sometimes thi=
s
> >>>> means something, but what?)
>
> >>>> Then when I removed the light I discovered that it, too, had a black
> >>>> and a white wire connected to it, and the black one is hot. Now that
> >>>> the light is disconnected, the black whire is still hot, but the wire=

> >>>> that used to be connected to the switch is now dead.
>
> >>>> There are no other wires in either electrical box.
>
> >>>> I'm racking by brain, but can't figure out how everything was
> >>>> connected.
>
> >>>> Many thanks in advance!
>
> >>>> Aaron
>
> >>> I'm thinking that there is another junction box somewhere where these
> >>> wires could be connected. =A0Is there another light fixture in the sam=
e
> >>> room? =A0Is there an accessible attic above so you can go see if there=
is
> >>> a
> >>> junction box up there? =A0Did an electrical box get buried during a
> >>> remodel?
>
> >>I agree, the op either missed the second cable and splice in one of the
> >>junction boxes or there is obviously a third box, and they mistakenly
> >>broke
> >>the neutral through the switch>
>
> > Sounds like to me he is just trying to get a voltage reading across
> > the switch.
>
> > If he took a switch out he would only have 2 wires to put back. =A0You
> > can't really mess it up.
>
> > When he took the light down, there is only 2 wires to put back too.
>
> > Seems like he is mistaken of the meter readings.
>
> I think he's just trying to figure how it works, not so much, how to put i=
t
> back. As you said, he really can't go wrong. I belive he's thinking that
> with the switch wires disconnected, he shouldn't still have a hot wire at
> the light, which is correct, except for when the neutral was switched
> instead of the hot
>
>
>
> - Hide quoted text -
>
> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -


Hi,

To clarify matters - yes, I'm just trying to figure out how it works,
not how to put it back together. And I still don't get it.

There are *only* to wires in each electrical box. I'm sure I did not
miss anything, because I have now removed the electrical boxes. Each
of the two wires came from a single romex.

So Cliff's suggestion was mostly likely, but that is not it. So I am
still puzzled.

One thing I am thinking is that I've been using a cheapo pen-like
voltage detector. Maybe my readings are wrong. I will go back and use
something a little bit more refined.

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