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Ceiling fixture help

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Ceiling fixture help bobprokop 01-11-2007
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Posted by on January 11, 2007, 9:52 pm


I'm trying to replace an old ceiling fixture. Reason: one of the bulbs
couldn't be removed and the socket was shot (but the bulb still worked
until this morning).

The old fixture had (2) 60W bulbs -- each with a black and white wire
"hard"-wired to their sockets (it was old). In the ceiling, there are
(2) wires -- 1 black and 1 white (the wiring is old cloth-covered;
originally the house had knob & tube/fuses).

The new fixture I purchased also had (2) 60W bulbs -- each with a black
and white wire (so 4 wires total coming off the new fixture).

Trouble is, when I connect the fixture I can only get (1) bulb to light
-- the black lead bulb. I've tried all black-to-black & all
white-to-white wiring; one white/one black to black (and one white/one
black to white) -- and I get the same result. Then I tried each black
and white on the fixture together and then to the black and white in
the ceiling -- this resulted in nothing (no light) -- and not even a
circuit trip.

Any idea what could be going on?

Thanks for any help/insight you can offer!


Posted by RBM on January 11, 2007, 9:56 pm


If you've tied the three black wires together and the three white wires
together, and only one lamp lights, you either have a bad bulb or a bad
socket


> I'm trying to replace an old ceiling fixture. Reason: one of the bulbs
> couldn't be removed and the socket was shot (but the bulb still worked
> until this morning).
>
> The old fixture had (2) 60W bulbs -- each with a black and white wire
> "hard"-wired to their sockets (it was old). In the ceiling, there are
> (2) wires -- 1 black and 1 white (the wiring is old cloth-covered;
> originally the house had knob & tube/fuses).
>
> The new fixture I purchased also had (2) 60W bulbs -- each with a black
> and white wire (so 4 wires total coming off the new fixture).
>
> Trouble is, when I connect the fixture I can only get (1) bulb to light
> -- the black lead bulb. I've tried all black-to-black & all
> white-to-white wiring; one white/one black to black (and one white/one
> black to white) -- and I get the same result. Then I tried each black
> and white on the fixture together and then to the black and white in
> the ceiling -- this resulted in nothing (no light) -- and not even a
> circuit trip.
>
> Any idea what could be going on?
>
> Thanks for any help/insight you can offer!
>



Posted by on January 11, 2007, 10:18 pm


Yeah, that's the weird thing -- I thought the same. So I tried the same
bulb that worked in the other socket -- nothing.

Then I returned the fixture -- and got another one (same
type/replacement) -- and it does the same thing.

Very odd. Doesn't make any sense.

The line doesn't end at this fixture, though -- it goes up to (3) other
fixtures -- and there's also at least one outlet on the same line.

They're all working fine.

Any ideas?


RBM remove this wrote:
> If you've tied the three black wires together and the three white wires
> together, and only one lamp lights, you either have a bad bulb or a bad
> socket
>
>
> > I'm trying to replace an old ceiling fixture. Reason: one of the bulbs
> > couldn't be removed and the socket was shot (but the bulb still worked
> > until this morning).
> >
> > The old fixture had (2) 60W bulbs -- each with a black and white wire
> > "hard"-wired to their sockets (it was old). In the ceiling, there are
> > (2) wires -- 1 black and 1 white (the wiring is old cloth-covered;
> > originally the house had knob & tube/fuses).
> >
> > The new fixture I purchased also had (2) 60W bulbs -- each with a black
> > and white wire (so 4 wires total coming off the new fixture).
> >
> > Trouble is, when I connect the fixture I can only get (1) bulb to light
> > -- the black lead bulb. I've tried all black-to-black & all
> > white-to-white wiring; one white/one black to black (and one white/one
> > black to white) -- and I get the same result. Then I tried each black
> > and white on the fixture together and then to the black and white in
> > the ceiling -- this resulted in nothing (no light) -- and not even a
> > circuit trip.
> >
> > Any idea what could be going on?
> >
> > Thanks for any help/insight you can offer!
> >


Posted by Rich256 on January 11, 2007, 10:26 pm


bobprokop@yahoo.com wrote:
> Yeah, that's the weird thing -- I thought the same. So I tried the same
> bulb that worked in the other socket -- nothing.
>
> Then I returned the fixture -- and got another one (same
> type/replacement) -- and it does the same thing.
>
> Very odd. Doesn't make any sense.
>
> The line doesn't end at this fixture, though -- it goes up to (3) other
> fixtures -- and there's also at least one outlet on the same line.
>
> They're all working fine.
>
> Any ideas?
>

Additional outlets should not make any difference.

A bulb connected between the hot wire (white) and return (black) should
light.

Is this a switched ceiling outlet? If so are you saying there are other
outlets controlled by the same switch?

Posted by on January 11, 2007, 10:33 pm


This ceiling fixture is controlled via a single switch. The switch does
not control anything but this fixture -- even though there is at least
one other outlet that loses power when the circuit is off.

The house is 68 years old, but very well taken care of. It's new to me
-- just moved in a couple of weeks ago. This fixture (at least the box
itself) appears to be original to the house.

I though the black wire was hot -- and the white wire was neutral
(return)...

Now remember, this is old, braided (cloth-covered) wire -- and, as
such, it's a bit difficult to tell whether the white is actually white
and the black is actually black (one is simply dingier than the other).

Should I try reversing the connection? Meaning -- maybe I'm wrong and
the black is actually white and vice-versa...


Rich256 wrote:
> bobprokop@yahoo.com wrote:
> > Yeah, that's the weird thing -- I thought the same. So I tried the same
> > bulb that worked in the other socket -- nothing.
> >
> > Then I returned the fixture -- and got another one (same
> > type/replacement) -- and it does the same thing.
> >
> > Very odd. Doesn't make any sense.
> >
> > The line doesn't end at this fixture, though -- it goes up to (3) other
> > fixtures -- and there's also at least one outlet on the same line.
> >
> > They're all working fine.
> >
> > Any ideas?
> >
>
> Additional outlets should not make any difference.
>
> A bulb connected between the hot wire (white) and return (black) should
> light.
>
> Is this a switched ceiling outlet? If so are you saying there are other
> outlets controlled by the same switch?


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