Light Fixture

Posted by Corinne on November 8, 2005, 1:40 am

I want to put an outdoor light fixture on my shed.

It will have a light sensor on it so that I do not have to bother
turning it off and on.

It is one of those cheap light fixtures that has a clear glass cover
that looks like a canning jar. The problem is that when I insert the
light sensor, and then put the light bulb on top of that, it only leaves
about 1/4 of an inch of space at the bottom of the jar cover.

The bulb is a 60 watt. Is this going to get too hot and maybe explode?

Thanks.

Corinne

Posted by buffalobill on November 8, 2005, 5:36 am

i believe that due to reflection the sensor will be confused and turn
the light off in your example.
i believe you are describing an indoor photo-eye device.
other options:
1. replace with a 60 watt incandescent fixture with a photo-eye
already in it
2. or replace with a 13 watt flourescent fixture with a photo-eye
already in it
3. or add an outdoor photo-eye mounted on an outdoor electrical box for
your present fixture.

Posted by SJF on November 9, 2005, 1:02 am

>i believe that due to reflection the sensor will be confused and turn
> the light off in your example.
> i believe you are describing an indoor photo-eye device.
> other options:
> 1. replace with a 60 watt incandescent fixture with a photo-eye
> already in it
> 2. or replace with a 13 watt flourescent fixture with a photo-eye
> already in it
> 3. or add an outdoor photo-eye mounted on an outdoor electrical box for
> your present fixture.

I have to question the several recommendations for a fluorescent bulb used
with a photo sensor in this thread, based on my recent experience.

I mounted entry lights at front and back doors with photo sensors built into
the fixture. Installed 13 watt compact fluorescent bulbs. Early failure of
both bulbs at about 200 hours of use. Repeated with different brand
bulbs -- same result. I concluded, and this has been confirmed by several
comments I've read on newsgroups, that the repeated blinking of the lights
at dusk cannot be tolerated by these bulbs. I'm now using 40 watt
incandescents as the cheaper alternative.

SJF

Posted by Mike O'Donnell on November 9, 2005, 1:26 am

>>i believe that due to reflection the sensor will be confused and turn
>> the light off in your example.
>> i believe you are describing an indoor photo-eye device.
>> other options:
>> 1. replace with a 60 watt incandescent fixture with a photo-eye
>> already in it
>> 2. or replace with a 13 watt flourescent fixture with a photo-eye
>> already in it
>> 3. or add an outdoor photo-eye mounted on an outdoor electrical box for
>> your present fixture.

> I have to question the several recommendations for a fluorescent bulb used
> with a photo sensor in this thread, based on my recent experience.
> I mounted entry lights at front and back doors with photo sensors built
> into the fixture. Installed 13 watt compact fluorescent bulbs. Early
> failure of both bulbs at about 200 hours of use. Repeated with different
> brand bulbs -- same result. I concluded, and this has been confirmed by
> several comments I've read on newsgroups, that the repeated blinking of
> the lights at dusk cannot be tolerated by these bulbs. I'm now using 40
> watt incandescents as the cheaper alternative.
> SJF

I installed an 18 watt (75 watt equiv) CFL in our outdoor post (it has a
photocell control built into it). It's been three years now and I haven't
had to replace it yet. It runs every night, all night.

Posted by SJF on November 9, 2005, 2:44 pm

>>>i believe that due to reflection the sensor will be confused and turn
>>> the light off in your example.
>>> i believe you are describing an indoor photo-eye device.
>>> other options:
>>> 1. replace with a 60 watt incandescent fixture with a photo-eye
>>> already in it
>>> 2. or replace with a 13 watt flourescent fixture with a photo-eye
>>> already in it
>>> 3. or add an outdoor photo-eye mounted on an outdoor electrical box for
>>> your present fixture.

>> I have to question the several recommendations for a fluorescent bulb
>> used with a photo sensor in this thread, based on my recent experience.
>> I mounted entry lights at front and back doors with photo sensors built
>> into the fixture. Installed 13 watt compact fluorescent bulbs. Early
>> failure of both bulbs at about 200 hours of use. Repeated with different
>> brand bulbs -- same result. I concluded, and this has been confirmed by
>> several comments I've read on newsgroups, that the repeated blinking of
>> the lights at dusk cannot be tolerated by these bulbs. I'm now using 40
>> watt incandescents as the cheaper alternative.
>> SJF

> I installed an 18 watt (75 watt equiv) CFL in our outdoor post (it has a
> photocell control built into it). It's been three years now and I haven't
> had to replace it yet. It runs every night, all night.

Much better situation. I got reflection off the wall which caused the
blinking at turn-on. With your post mounted light, you should have been
able to avoid the blinking. Off wall mounting, if convenient, is obviously
the
better way to do it.

SJF

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