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!