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[email protected][_2_] trader4@optonline.net[_2_] is offline
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Default Adding UPS to light circuit

On Thursday, February 13, 2014 9:55:05 PM UTC-5, The Daring Dufas wrote:
On 2/13/2014 6:44 PM, wrote:

On Thu, 13 Feb 2014 17:32:02 -0600, The Daring Dufas


wrote:




On 2/13/2014 4:03 PM,
wrote:

On Thu, 13 Feb 2014 15:03:17 -0600, The Daring Dufas


wrote:




On 2/13/2014 1:25 PM,
wrote:

On Thursday, February 13, 2014 10:55:12 AM UTC-5, The Daring


Dufas wrote:


On 2/11/2014 9:43 PM, JIMMIE wrote:




My house lighting is all LED total wattage with all on


is less than 100 watts. What I want to do is to be able


to connect my light circuits to the UPS during


emergencies like this ice storm that is coming up. Not


worried about heat or the fridge, I have gas heater


backup and not enough in the fridge to worry about. Are


there approved ways of connecting in the UPS that does


not involve adding a transfer switch. I was thinking


about doing this with outlets and plugs so I could unplug


the light circuit and plug it into the UPS.




Jimmie




The easiest thing to do is to run a low voltage lighting


system using a 12vdc power system and battery charger. A


relay to switch on the 12 volt LED lights when the power


fails is simple to implement and with a proper low current


fuse is quite safe. I bought a little 48 LED light panel


meant to replace an automobile dome light from Amazon to


play with and it and it puts out a surprising amount of


light. The LED panel measures 1-1/2" X 2-5/8" and has


double stick foam on the back so it can be mounted easily.


I imagine you can make your own panel using 4 to 6of them


and light up a room very well. I haven't measured the


current draw on it but I found it is quite bright off a 9


volt battery. Low voltage wire such as telephone wire


installed with a stapler could be used to wire rooms for


emergency light using the little modules. ^_^






I think you'll find that telephone wire is probably not


rated for use in a low voltage lighting system in a house.


There is NEC that applies to those types of installations


too.




Jesus H Christopher! It's a DIY project not wiring the


Smithsonian! Telephone system cable caries 48vdc talk battery


and 90vac ringing voltage. It's not high current and neither is


the power required by the 12vdc LED modules. The OP could use


thermostat wire which is rated for up to 300 volts. He can


install his low voltage lighting, measure the current draw then


install a proper fuse to protect the wiring which will prevent


the magic smoke from escaping. o_O




TDD


IF he wires it correctly he can use bell wire. But what he can


NOT do is wire 100 watts of LED on a single run of bell wire


because that requires almost 10 amps of current - on a wire that


is only rated for 2.3 amps for power transmission.




Forgive me for not remembering that others will not take into


consideration those things I do without thinking. Those little


panels with 48 SMD LED's draw very little current and like any


other electrical project I've ever done, I will figure in the


current draw of the project before I install anything. I haven't


measured the current draw of the little SMD LED light panels but


I'm sure it's not much at all.




TDD


One that I installed in my brother's RV was 3 watts. That's getting


awfully close to the limit on the bell wire. ANd PHONE wire is


generally 22 guage, not 18 - so NO. You cannot use bell wire to wire


a house for low voltage lighting...




Then use landscape lighting wire or 18-16AMW stranded low voltage alarm

or sound system cable.


Again, he can do whatever he pleases, but landscape lighting wire
is most likely not rated for use inside a building. What you
proposed he wire up is a Class 1 low voltage circuit and it's
covered under NEC.



An alternative is what I do when installing CCTV

cameras. I install a central 12vdc power supply and separate low voltage

cables to each camera. A multi terminal central power supply used for

CCTV cameras would be a good choice. It's not rocket surgery. GEEZ!



TDD


It's not rocket surgery, but that doesn't mean that there aren't
codes that are supposed to be followed. Why do it half-assed
instead of reading the code, using the right materials, and doing
it right? As an example to the practical problems you're left
with, if someday he goes to sell the house, an inspector seeing
phone wire used for low voltage lighting may flag it. Then he
has a problem that he could have easily avoided by doing it right.