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Photo-cells and CFLs nielloeb@hotmail.com 10-18-2009
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Posted by Tony Hwang on October 18, 2009, 4:12 pm


nielloeb@hotmail.com wrote:
> I have an outdoor floodlight fixture with a photo-cell to turn it on
> at dusk and off at dawn. I can buy a screw-in photo-cell that works
> with CFLs for only $8. If I cover the regular eye so it thinks it's
> always dark and therefore will always be on, will the CFL work? It
> would be cheaper than buying a new fixture.
Hmm,
Funny, why would you need another photo cell if there is one in the
fixture unless it is bad.

Posted by RBM on October 18, 2009, 4:21 pm



>I have an outdoor floodlight fixture with a photo-cell to turn it on
> at dusk and off at dawn. I can buy a screw-in photo-cell that works
> with CFLs for only $8. If I cover the regular eye so it thinks it's
> always dark and therefore will always be on, will the CFL work? It
> would be cheaper than buying a new fixture.


If the existing photocell won't work with a cfl, it won't matter if you add
one that is designed to work with cfl's to the system. Do as John
recommends, and see if it works. Be aware that not all Par38 CFL lamps will
fit in every PAR holder socket. Many are built in such a way that the
transformer hits the lip of the socket before the lamp screws down to the
tongue of the socket.



Posted by IGot2P on October 18, 2009, 5:03 pm


RBM wrote:
>> I have an outdoor floodlight fixture with a photo-cell to turn it on
>> at dusk and off at dawn. I can buy a screw-in photo-cell that works
>> with CFLs for only $8. If I cover the regular eye so it thinks it's
>> always dark and therefore will always be on, will the CFL work? It
>> would be cheaper than buying a new fixture.
>
>
> If the existing photocell won't work with a cfl, it won't matter if you add
> one that is designed to work with cfl's to the system. Do as John
> recommends, and see if it works. Be aware that not all Par38 CFL lamps will
> fit in every PAR holder socket. Many are built in such a way that the
> transformer hits the lip of the socket before the lamp screws down to the
> tongue of the socket.
>

Yeah, garage door opener light sockets are notorious for that.

Don



Posted by RBM on October 18, 2009, 5:44 pm



> RBM wrote:
>>> I have an outdoor floodlight fixture with a photo-cell to turn it on
>>> at dusk and off at dawn. I can buy a screw-in photo-cell that works
>>> with CFLs for only $8. If I cover the regular eye so it thinks it's
>>> always dark and therefore will always be on, will the CFL work? It
>>> would be cheaper than buying a new fixture.
>> If the existing photocell won't work with a cfl, it won't matter if you
>> add one that is designed to work with cfl's to the system. Do as John
>> recommends, and see if it works. Be aware that not all Par38 CFL lamps
>> will fit in every PAR holder socket. Many are built in such a way that
>> the transformer hits the lip of the socket before the lamp screws down to
>> the tongue of the socket.
> Yeah, garage door opener light sockets are notorious for that.
> Don

>You should use an "appliance lamp" in garage door operators, they are
>physically smaller and handle the vibration better



Posted by Oren on October 18, 2009, 6:07 pm



>RBM wrote:
>>> I have an outdoor floodlight fixture with a photo-cell to turn it on
>>> at dusk and off at dawn. I can buy a screw-in photo-cell that works
>>> with CFLs for only $8. If I cover the regular eye so it thinks it's
>>> always dark and therefore will always be on, will the CFL work? It
>>> would be cheaper than buying a new fixture.
>>
>>
>> If the existing photocell won't work with a cfl, it won't matter if you add
>> one that is designed to work with cfl's to the system. Do as John
>> recommends, and see if it works. Be aware that not all Par38 CFL lamps will
>> fit in every PAR holder socket. Many are built in such a way that the
>> transformer hits the lip of the socket before the lamp screws down to the
>> tongue of the socket.
>>
>Yeah, garage door opener light sockets are notorious for that.
>Don

Last month I bought my first CFL bulb for 49 cents. Grabbed four more
for that price.

My GD opener is 5 years old. I put the CFL bulbs (two) in and presto.
Worked like a charm. The 3rd bulb went into a single ceramic light
socket on the ceiling. Same result.


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