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Old 12-07-2003, 01:57 AM
stricks760
 
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Default Light Kit Transformers

Hi Again - sorry for beating everyone to death with questions . . .

If I get a normal landscape lighting timer (12 VDC) at e.g Home Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get real
pondlights.

Thanks again!


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Old 12-07-2003, 02:09 AM
Hank Pagel
 
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Default Light Kit Transformers

I run a 12v pond light from a Malibu timer that powers my low voltage
garden lights. Just be careful not to exceed the total wattage of the
transformer. The pond light uses a 20 watt bulb.


"stricks760" wrote in message
news:yUIPa.97$Ze.73@fed1read03...
Hi Again - sorry for beating everyone to death with questions . . .

If I get a normal landscape lighting timer (12 VDC) at e.g Home

Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get

real
pondlights.

Thanks again!





  #3   Report Post  
Old 12-07-2003, 02:20 AM
joe
 
Posts: n/a
Default Light Kit Transformers

stricks760 wrote:

If I get a normal landscape lighting timer (12 VDC) at e.g Home Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get real
pondlights.


Absolutely. Although, I bought a 300w malibu transformer for, I think about
$100. After 2 months it died. Home depot is a great place. I took it back,
got another. Two months later - poof. One more time; two months later - yup.
So I bought a different brand (300w for $48) still going strong. Can't
remember the manufacturer, but email me privately and I'll go look.

Joe



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Old 12-07-2003, 06:08 AM
John Rutz
 
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Default Light Kit Transformers



stricks760 wrote:
Hi Again - sorry for beating everyone to death with questions . . .

If I get a normal landscape lighting timer (12 VDC) at e.g Home Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get real
pondlights.

Thanks again!


it will work just make sure its output is rated for the total wattagge
of your pond lites and a bit more

--





John Rutz
Z5 New Mexico

never miss a good oportunity to shut up

see my pond at:

http://www.fuerjefe.com

  #5   Report Post  
Old 12-07-2003, 04:44 PM
 
Posts: n/a
Default Light Kit Transformers

The "pond / water" rated transformers cost quite a bit more because
they are isolation transformers. This insures, in the event of a
failure of the transformer, that the primary voltage (i.e. 120 VAC)
can not short to the secondary output. The isolation transformer is a
really a good idea for safety. If you choose to go with the cheaper
transformer (on which you will see a warning not to use it for
submersible lights) make sure that the outlet feeding it is GFCI
protected, and if you are connecting multiple lights make sure that
any wire splicing is done well away from the water.

I built my own 12 volt DC, 5 Amp power supply for about $20 last year.
I bought the isolation transformer from a surplus electronics supply
house. I also made my own submersible lights using super-bright LEDs.




On Fri, 11 Jul 2003 17:48:31 -0700, "stricks760"
wrote:

Hi Again - sorry for beating everyone to death with questions . . .

If I get a normal landscape lighting timer (12 VDC) at e.g Home Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get real
pondlights.

Thanks again!




  #6   Report Post  
Old 12-07-2003, 05:56 PM
Hank Pagel
 
Posts: n/a
Default Light Kit Transformers

I like the idea of the LEDs. The 20w halogens must be completely
submerged to cool them. Would you mind sharing your design. You can do
it by email if you would prefer. Now that I think of it the one made
for auto backup lights would be ready made. Just need a housing of
lexan, maybe.
I forgot where I was and assumed all outdoor wiring would be done
to code and include a GFI device. Thanks for picking up on that.
wrote in message
news
The "pond / water" rated transformers cost quite a bit more because
they are isolation transformers. This insures, in the event of a
failure of the transformer, that the primary voltage (i.e. 120 VAC)
can not short to the secondary output. The isolation transformer is
a
really a good idea for safety. If you choose to go with the cheaper
transformer (on which you will see a warning not to use it for
submersible lights) make sure that the outlet feeding it is GFCI
protected, and if you are connecting multiple lights make sure that
any wire splicing is done well away from the water.

I built my own 12 volt DC, 5 Amp power supply for about $20 last

year.
I bought the isolation transformer from a surplus electronics supply
house. I also made my own submersible lights using super-bright

LEDs.




On Fri, 11 Jul 2003 17:48:31 -0700, "stricks760"


wrote:

Hi Again - sorry for beating everyone to death with questions . . .

If I get a normal landscape lighting timer (12 VDC) at e.g Home

Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get

real
pondlights.

Thanks again!





  #7   Report Post  
Old 13-07-2003, 03:44 AM
 
Posts: n/a
Default Light Kit Transformers

for my LED lights I use a cluster of four Sunbrite mini-wedge 10mm LED
lamp replacements. The Sunbrite mini-wedge LEDs are packaged to
replace a 12V bulb and hence have the appropriate current limiting
resistor built in.

I parallel the cluster of four together, then pot them and the power
cable in a waterproof epoxy resin. The waterproof resin, which I use
is not clear, so I leave the top 1/4" of the LEDs protruding. Each LED
produces 1600 mcd with merely 20ma of current draw at 12 VDC.

The Sunbrite LEDs are available in clear, yellow, red, green, and blue
for $1.60 each (I buy them from Digkey). I use two of my cluster
lights (of the blue ones) to illuminate my waterfall.




On Sat, 12 Jul 2003 12:56:54 -0400, "Hank Pagel"
wrote:

I like the idea of the LEDs. The 20w halogens must be completely
submerged to cool them. Would you mind sharing your design. You can do
it by email if you would prefer. Now that I think of it the one made
for auto backup lights would be ready made. Just need a housing of
lexan, maybe.
I forgot where I was and assumed all outdoor wiring would be done
to code and include a GFI device. Thanks for picking up on that.
wrote in message
news
The "pond / water" rated transformers cost quite a bit more because
they are isolation transformers. This insures, in the event of a
failure of the transformer, that the primary voltage (i.e. 120 VAC)
can not short to the secondary output. The isolation transformer is

a
really a good idea for safety. If you choose to go with the cheaper
transformer (on which you will see a warning not to use it for
submersible lights) make sure that the outlet feeding it is GFCI
protected, and if you are connecting multiple lights make sure that
any wire splicing is done well away from the water.

I built my own 12 volt DC, 5 Amp power supply for about $20 last

year.
I bought the isolation transformer from a surplus electronics supply
house. I also made my own submersible lights using super-bright

LEDs.




On Fri, 11 Jul 2003 17:48:31 -0700, "stricks760"


wrote:

Hi Again - sorry for beating everyone to death with questions . . .

If I get a normal landscape lighting timer (12 VDC) at e.g Home

Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get

real
pondlights.

Thanks again!





  #8   Report Post  
Old 13-07-2003, 04:20 AM
Hank Pagel
 
Posts: n/a
Default Light Kit Transformers

Thanks, Potting would be alot easier than a housing and a lot less
buoyant and noticeable in the daytime.
wrote in message
news
for my LED lights I use a cluster of four Sunbrite mini-wedge 10mm
LED
lamp replacements. The Sunbrite mini-wedge LEDs are packaged to
replace a 12V bulb and hence have the appropriate current limiting
resistor built in.

I parallel the cluster of four together, then pot them and the power
cable in a waterproof epoxy resin. The waterproof resin, which I use
is not clear, so I leave the top 1/4" of the LEDs protruding. Each

LED
produces 1600 mcd with merely 20ma of current draw at 12 VDC.

The Sunbrite LEDs are available in clear, yellow, red, green, and

blue
for $1.60 each (I buy them from Digkey). I use two of my cluster
lights (of the blue ones) to illuminate my waterfall.




On Sat, 12 Jul 2003 12:56:54 -0400, "Hank Pagel"
wrote:

I like the idea of the LEDs. The 20w halogens must be completely
submerged to cool them. Would you mind sharing your design. You can

do
it by email if you would prefer. Now that I think of it the one

made
for auto backup lights would be ready made. Just need a housing of
lexan, maybe.
I forgot where I was and assumed all outdoor wiring would be

done
to code and include a GFI device. Thanks for picking up on that.
wrote in message
news
The "pond / water" rated transformers cost quite a bit more

because
they are isolation transformers. This insures, in the event of a
failure of the transformer, that the primary voltage (i.e. 120

VAC)
can not short to the secondary output. The isolation transformer

is
a
really a good idea for safety. If you choose to go with the

cheaper
transformer (on which you will see a warning not to use it for
submersible lights) make sure that the outlet feeding it is GFCI
protected, and if you are connecting multiple lights make sure

that
any wire splicing is done well away from the water.

I built my own 12 volt DC, 5 Amp power supply for about $20 last

year.
I bought the isolation transformer from a surplus electronics

supply
house. I also made my own submersible lights using super-bright

LEDs.




On Fri, 11 Jul 2003 17:48:31 -0700, "stricks760"


wrote:

Hi Again - sorry for beating everyone to death with questions .

.. .

If I get a normal landscape lighting timer (12 VDC) at e.g Home

Depot, can I
run pond lights with it (assuming wattage works out, etc.)

The pond stores charge a fortune for what is (I think) a fairly
run-of-the-mill landscape lighting timer. I would obviously get

real
pondlights.

Thanks again!








  #10   Report Post  
Old 13-07-2003, 12:56 PM
 
Posts: n/a
Default Light Kit Transformers

Actually, the Sunbrite lamp replcament LEDs even have the diode built
into the package...



On Sun, 13 Jul 2003 01:59:32 -0500, "malcolm"
wrote:

best to put an inverse parallel diode across the LEDs too,
and an inline fuse so if the supply get reversed the fuse goes not the LEDs
regards malcolm

--
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LED Headlamps and Sea Fishing UK
http://www.geocities.com/malc_hurn
http://groups.yahoo.com/group/seafishinguk
http://www.brockstock.org.uk


¸.·´¯`·.¸((((º.·´¯`·.¸¸.·´¯`·.¸((((º.·´¯`·. ¸


wrote in message
news
for my LED lights I use a cluster of four Sunbrite mini-wedge 10mm LED
lamp replacements. The Sunbrite mini-wedge LEDs are packaged to
replace a 12V bulb and hence have the appropriate current limiting
resistor built in.

I parallel the cluster of four together, then pot them and the power
cable in a waterproof epoxy resin. The waterproof resin, which I use
is not clear, so I leave the top 1/4" of the LEDs protruding. Each LED
produces 1600 mcd with merely 20ma of current draw at 12 VDC.

The Sunbrite LEDs are available in clear, yellow, red, green, and blue
for $1.60 each (I buy them from Digkey). I use two of my cluster
lights (of the blue ones) to illuminate my waterfall.






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