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Old 01-11-2012, 07:30 PM   #1
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Security Lighting in the yard


My 1900-sq-ft ranch house sits on a 7400-sq-ft lot. On one side of the house it's pitch black at night. I am thinking about hard-wire in a few LED lights to light up there at night. I am considering putting the lights along my 7-ft fence. I am going to run 12-volts. The LED lights will be only 6Watts each so the 6 LED lights I am adding will only be 36watts, resulting in 3Amp current. So can I pretty much use any gauge wires with any ratings due to the low voltage and low current load?

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Old 01-11-2012, 08:30 PM   #2
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So, you are going to use LED lighting so that you can sit under it and read a book? Sorry, but LED lighting is not enough lumen's to light a large area.

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Old 01-12-2012, 06:31 PM   #3
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Security Lighting in the yard


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So, you are going to use LED lighting so that you can sit under it and read a book? Sorry, but LED lighting is not enough lumen's to light a large area.
No. I am putting the LED there (~400 lumen per light) to light up the area so that you can see whether there are stuffs hiding there at night. I'd like to keep my yard with a little bit light for security purposes.
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Old 01-12-2012, 06:33 PM   #4
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No. I am putting the LED there (~400 lumen per light) to light up the area so that you can see whether there are stuffs hiding there at night. I'd like to keep my yard with a little bit light for security purposes.
So, basically you are going to use it to read a book underneath, or attempt to. Sorry, but those will do nothing but make that small area of about a 10 foot radius look pretty, and nothing more.
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Old 01-12-2012, 06:54 PM   #5
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Security Lighting in the yard


Ht,
I have several fixtures on the outside of the house that I used the curly Q flourescent bulbs in. They are very bright and light up a fair area away from the house. They have been out there for about 2-3 years. They don't cost much to run at all.
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Old 01-12-2012, 06:59 PM   #6
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Ht,
I have several fixtures on the outside of the house that I used the curly Q flourescent bulbs in. They are very bright and light up a fair area away from the house. They have been out there for about 2-3 years. They don't cost much to run at all.
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Husky?
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Old 01-12-2012, 11:11 PM   #7
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Security Lighting in the yard


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Originally Posted by htabbas View Post
No. I am putting the LED there (~400 lumen per light) to light up the area so that you can see whether there are stuffs hiding there at night. I'd like to keep my yard with a little bit light for security purposes.
For that LED device which that crank out 400 lumines that will equally about the same as 40 watt insentdent bulb level and it is not very bright espcally if you mount them like 10 to 12 feet above the ground level that will look like nitelite if you get my drift.

Normally for LED area luminiare I used the LED pack and they are not cheap ATM but it justify the cost with the brightness like example the last one I installed one it came with 32 watt driver I can't cuss in here but you get my drift that is one bright thing it have simair light level as 250 W MH wallpack but only one major quriks with LED's is they are directional so they will aim the light to one way not spread out like convental lamps are.

So just keep in your mind with that.

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Old 01-12-2012, 11:34 PM   #8
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Husky?
'76 WR 360. Also have a 72 WR250, '80 CR250, and an '83 CR250, plus some hodakas, elsinores, couple of trials bikes, and a pair of Aprilia RXV 450 enduros. I like dirt bikes.
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Old 01-13-2012, 05:58 AM   #9
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'76 WR 360. Also have a 72 WR250, '80 CR250, and an '83 CR250, plus some hodakas, elsinores, couple of trials bikes, and a pair of Aprilia RXV 450 enduros. I like dirt bikes.
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Sweet! Nice collection. I have always wanted to own a Husky and a CZ but it never happened. I did race a friends 430? auto in the Delaware enduro once. 380 Greeves, 400 radial Maico, some Montesa's, and a bunch of common Japanese stuff, all long gone.

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Old 01-13-2012, 07:33 AM   #10
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So can I pretty much use any gauge wires with any ratings due to the low voltage and low current load?
I don't know about "any" guage. I assume you are talking about the typical LV cabling used for landscape lighting? I use 12G for all landscape lighting (LED) and runs up to 200 feet. I suspect 14G would be fine for the LED, but felt it best to be able to handle incandescent if I changed my mind. Price difference was not significant to me.

I your case, with a small lot and few fixtures, why not simply use 12G. How much are you going to save by using smaller guage wiring? But...yes, you could use smaller guage if you want. Current ratings are typically posted on the wiring package. The nice thing about LED is that light output is less sensitive to voltage. You need be less concerned about slight variations of voltage at the fixture than you might otherwise be with incandescent.
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Old 01-13-2012, 08:04 AM   #11
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Security Lighting in the yard


You still need to do a voltage drop calculation when choosing wire size. For 12 volts, dropping one volt is significant and some LED lights might be sensitive enough to not work on 11 volts.

Don't forget to use the round trip distance when calculating voltage drop.

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