A step-up transformer increases voltage, while a step-down transformer decreases voltage.
Stepdown Transformer.
If you have to pay for the stepdown transformer, yes. If that is provided free, there is a small loss of energy in the transformer, maybe about 5%, and it depends on whether the meter is installed before or after the transformer.
the maximum power it will supply
It is used to step up the voltage in order to transmit it a long distance where it goes into a stepdown transformer and then into your home .
No
The transformer will act as a step down transformer in the ratio of 240 to 208. This will reduce the 208 input to 180.
Transformer is the only device which is capable to stepup or stepdown an ac signal. That's why its used widely in ac supply.
A step-down transformer U really don't need a step up or stepdown transformer You need a source capable to run your LED it can be a swithcing power supply for istance a battery
The "pat" answer is a stepdown transformer. But finding one that does this in this voltage range is not going to be easy. It's an "odd duck" in the world of voltage conversion. There are other approaches that might be used, but more knowledge of the project or application would be needed to make suggestions.
No, it is not safe or recommended to install a 120V light on a 277V circuit. The voltage difference could damage the light fixture and pose a fire hazard. It is best to use a light fixture rated for the appropriate voltage.
If you want to convert 24v AC into 12v Ac, it's simple. Just get a transformer to convert 24 volts into 12 volts. This is called a stepdown transformer. If you want to convert 24v DC into 12v DC, it's more complicated. First you have to change the 24v DC into 24v AC by a switching converter that changes DC into AC. Then you would use a stepdown transformer as in the former example. Once the 24v AC is converted to 12v AC, then you use a rectifier bridge to change the 12v AC into 12v DC.
current is decreased Depends of the circuit or device: in a stepdown transformer: power in= power out, V x I = V x I , Increase voltage in (power remaining constant) you current output will increase.