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Which is more efficient and why 5- 50w 120v halogen lights or 5- 50w 12v halogen lights run on a transformer?
Wiki User
∙ 10y ago
In both cases, you're operating five 50-watt lights, so you're getting the benefit of
250 watts of power. You haven't said how much power you have to feed to them,
or which halogen light is more efficient, so we can't calculate any efficiency.
Just on general principles, the only difference in the two setups that we're sure of
is the transformer, and there's always a bit of loss in a transformer, so there's a
reason to speculate that the second situation is a bit less efficient. But aside from
that, we're woefully short of electrical information on which to base an answer.
By the way ... There's also no reason to expect that lights running on higher or
lower voltage are any more or less efficient than those designed for the opposite
conditions.
Wiki User
∙ 10y ago
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How do you calculate voltage ratio of Transformer?
Count the turns ratio of the windings. The voltage ratio is equal to the turns ratio. The current ratio is equal to the inverse of the turns ratio. For instance, a power transformer with a 10:1 turn ratio (primary to secondary) running on 120V will produce 12V. If it consumes 1 ampere from the input, it will provide 10 amperes to the output.
What is the standard power of apc 1500?
The APC 1500 has a standard power of 865 watts/1500 VA. The APC 1500 has an output of 120V and an output of 120v. The specifics of the model can be found on the official website.
What is 2 wire plus ground 240V?
With one interpretation of this question, the answer would be two 120V wires and a ground.
What is the line voltage between two lines?
the voltage between 1 line & phase =120v The voltage between 2 line =240
What does 240 mean?
240 refers to the voltage used in an electrical system. The US uses 120V/240V, while the UK uses just 240V.
What is more efficient a 120V 13W fluorescent bulb or a 12V 50W halogen bulb?
Fluorescents are always 3-4 times more efficient than halogens which are a version of incandescent bulb.
What kind of transformer for going from 120v to 220v?
This type of a transformer is known as a step up transformer.
Can you run your neon sign of 120v 50hz 60hz 0.6a 7.5kv 30mA in an Australian 240v power outlet?
No. The neon sign is fed by a step-up transformer. Primary side 120V, secondary side 7500V. If you applied 240 to the primary side you would get 15000 volts on the neon tube. A flash over and then nothing. If you can find a transformer from 120V to 240V or 240V to 120V then you are good to go. Connect 240V to 240V side and you will get 120V out the other, connect the 120V side to the neon sign and you should have light. Transformer should be at least 100va. This will give you an output of .83 amps at 120V
What is the ratio of a potential transformer from 4160V to 120V?
4160/120 = 34.666666 to 1
Why does my 120v 24v reduce to 28v. when you connect it to your boiler it blows out the transformer. is a problem with the transformer or the panel?
Please go to discuss question page.
Can 120V appliance work with 220V?
120V appliance will not work on 220V. Use an instrument transformer or voltage regulator to adjust the high voltage to the desired level.
If you put a 60W 120V bulb in a 120V lamp that has a transformer for 240V and plug it into a 240V outlet will it work or blow the circuitry?
Off hand no but your explanations are not clear as to who is doing what to whom,,
What is the output of the control transformer?
Depends on what the voltage is being stepped down in that particular control transformer. Control transformers usually step down a voltage of 480/208v to 120V. The 120Volts can now be used in safer manner to "control" start/stop buttons, and other components that are only built to run on 120V
Is there a way to install a 120V light on a 277V circuit?
no ----------------------------------------------------------------------------------- Stepdown transformer. More expensive than buying the correct light fixture. Y-THINK-Y
Is there any way to convert car led strips for wall outlets?
Probably a transformer that converts voltage from 120v AC to 12v DC. Commonly found at Radio Shack or an electronics store. Depending upon how much the lights draw for current, you have to find a transformer that will supply that current. Such as .5 amp or 2 amps or as much as 5 amps-----.
What does a transformer between utility wires and your house do?
The transformer steps down the voltage from 600kilo volts which is what is at the power pole/lines to multiple strands of 120v or hot wires which is what your house runs off of.
What makes a 480 motor with up down and stop 120v switch work?
I think I understand what you are asking. 3-phase motors usually are equipped with a starter or contactor, since all 3 hot wires need to be switched. The control voltage that runs the starters is 120V, because it's safer and also 120V switches and relays are cheaper. You would have a 480-120V transformer (called a control transformer) in the starter box to provide the 120V "control voltage". So the arrangement you describe would have two contactors, with two phases reversed between them. Energize one, and the motor runs forward. Energize the other, and it runs reverse. The switch sends 120V to each of the contactors, which are equipped with 120V coils.
