On Tue, 18 Jun 2019 13:26:14 +0630, Oumati Asami wrote:
Voltage (V) = Energy per charge
Current (I) = Charge per second
Power (W) = V * I = Energy per second
Hence, devices that consume the same power will dissipate the
The difference between the two bulbs that you mention is
that one bulb (110 volt) will produce the same energy using
The only question is the form of the dissipated energy.
In the case of of an incandescent filament (light bulb)
all energy is radiant energy (light), but a portion of the
radiant energy can be infrared light (heat) and a portion
can be visible light. An incandescent bulb radiates a lot
of infrared but the exact proportion depends on the type
of incandescent bulb.
But there are other ways to produce light: LED, florescent,
etc. Only "bulbs" of the same type can be meaningfully
Does that mean I would save electricity bill by using 110 v bulbs than
12 v bulbs? I was going to buy 12 12v bulbs but now I may buy 110 v
ones. That brings up another question. Why were the 12 v spot lights
installed in the first place? They need a transformer to work. So, they
are intrinsically more expensive to begin with. It seems to me 110v
lights should have been installed in the first place.
short answer, no. (but see the longer one later).
5 watts of energy going through the bulb leads to 5 watts
of heat in the room. The part that's converted to light
turns to heat once it hits the objects it illuminates,
so aside from any going out the window, it all
behaves the same.
Now the longer part: it's quite possible that one of the
lamps (the proper name for what people call bulbs..) is
more efficient than the other in creating light.
Hence... you might get the same amount of usable illumination
from a 4 watt lamp, or from five of them instead of six
of the other. And that reduction in fixtures would reduce
the heat a notch.
Nope. The "current" (amperage) is less in the higher voltage
lamp, but the net wattage is the same. (watts = volts time amps)
12V wiring is easier and safer to work with. You're not going
start fires (well, not easily) or get zapped off the ladder
if you touch the live wire...
No need for an electrician, etc.
Knowledge may be power, but communications is the key
On Tuesday, June 18, 2019 at 9:36:51 PM UTC-4, Oumati Asami wrote:
IDK where 110v came from, in the US standard is 120V.
You would save a little using line voltage bulbs, because the power
supply for 12v will have some small losses in it. I think the main
attraction for low voltage indoor lighting is for places where line
voltage wiring requirements would make it difficult to install,
eg for light under kitchen cabinets.
How are you going to put a 110V bulb in a socket powered with 12V?
That brings up another question. Why were the 12 v spot lights
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