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The impedence of the ballast is system voltage dependent to allow required current to pass through the light fixture. If system voltage changes, the current passing through the light fixture changes, therefore to get designed output from the fixture, the ballast has to be changed.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoI've installed many ballasts and some of them have leads for several input types.
My understanding is that the input leads are internally wired to coils on the primary side of a transformer. The configuration is important since it will dictate how many windings are used on the primary side to generate the proper voltage on the secondary.
If the ballast is not readily configured to accept 110vac...then you are probably best served to just buy one that has the same output and current capabilities.
Wiki User
∙ 12y agoIf you are talking about a fluorescent fixture then yes it can be done. As for the cost factor it wouldn't be worth it. To buy a new replacement 120 volt ballast separately would be equal to or higher that getting a whole new 120 volt fixture. Do a price comparison before going ahead and making a change to the 277 volt fixture.
Wiki User
∙ 16y agothe lamps are the same regardless of what voltage the ballast is connected. However, there are many types of lamps and ballast combinations, and it is important that they match.
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Wiring diagram for 277 v ballast?
wireing diadram for 277v ballast
If 227v connected to 120v ballast what happens?
The ballast burns up.
How many amps does a 1000 watt 120v ballast use?
Max amps would be 1000 divided by 120.
Can an overhead 400W light with built in ballast that is currently wired to use 480V be rewired to use 120V?
Only if the ballast is a multi tap ballast.:Even if you could install a 120V ballast, or tap it to 120V with the existing one, Current may become an issue. To run the 400W light (sodium?) Now instead of the .833 amp range it's more like 3.33 amps. Supply wiring would have to be able to handle that. Those types of lights are often on long runs to building and grounds lights, parking lots, etc. Using 480 saves a lot on wiring costs.
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
Wiring diagram for 277 v ballast?
wireing diadram for 277v ballast
If 227v connected to 120v ballast what happens?
The ballast burns up.
How do you get a 120 - 480 Volt ballast to work from a normal outlet?
Most often this ballast is actually 120/277. It could be 120-480 though. Look at the diagram on the ballast itself. Many times there will either be a black/white/green, black/red/white/green, or black/orange/white/green set of primary leads. If the ballast has only black/white/green, but it shows more than one voltage, chances are it is automatically adjusted for the line voltage. In this case, just connect the black/white/green to a typical lighting box, and the ballast will light your lamps. If the ballast has more than one color other than white or green, it is a multi-tapped ballast. Normally the black lead is for 120v line voltage and the red or orange is 277v. Don't assume though, refer to the diagram sticker located on the ballast for this information. Hook up the 120v, neutral, and ground to your lighting box, but be sure to cap the unused 277v lead with a wire nut. ----If you do not understand the work well enough to accomplish it yourself properly and safely, don't try it. Consult a professional electrician, as they are proficient enough to do it properly and safely. When working on electrical circuits and equipment, make sure to de-energize the circuit you will be working on. Then test the circuit with a definitive means to make sure it is off (multimeter with metal tipped leads, voltage tester with metal tipped leads, etc., not a non-contact tester, which is non-definitive.)
How many amps does a 1000 watt 120v ballast use?
Max amps would be 1000 divided by 120.
Can an overhead 400W light with built in ballast that is currently wired to use 480V be rewired to use 120V?
Only if the ballast is a multi tap ballast.:Even if you could install a 120V ballast, or tap it to 120V with the existing one, Current may become an issue. To run the 400W light (sodium?) Now instead of the .833 amp range it's more like 3.33 amps. Supply wiring would have to be able to handle that. Those types of lights are often on long runs to building and grounds lights, parking lots, etc. Using 480 saves a lot on wiring costs.
What is use of step up transformer?
A step-up transformer increases (or "steps up") the voltage of an alternating electrical current. For example, a step-up transformer could be used to increase 120V AC to 277V AC to provide power to 277V electrical equipment in a building that does not already have a 277V electrical system.Other examples where a step-up transformer might be used include these:Using 240V AC equipment with a 120V AC mains supply.Generating high voltage for use with tubes, such as a CRT.Generating high voltage for use in electric energy distribution.
Does a 277 volt fluorescent fixture cost less to operate than a 120 volt fixture?
Not necessarily. It's the wattage of the lamps that determine how much power is used. 277V lighting merely allows for more lights to be on a circuit than if they were on a 120V. The current that is printed on the ballast, times the voltage the ballast is connected to, is what determines the cost to operate the fixture. This is the true wattage of the fixture. The wattage of the lamps are independent as new electronic ballasts can power a numerous amount of tubes of various wattages.
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
Will 120 - 277 volt electronic fluorescent ballasts work on 208 volts?
NO! a 120-277 electronic ballast requires one "hot" wire and a neutral from either a 110V or 277V supply. If you supply it with two "hot" wires from a 208 V supply, it will instantly burn up.Yes. A ballast with a specification range of 120 volt to 277 volt will work on 208 volt. These ballast use intelligent voltage sensing technology and it does not matter if the source is a hot and neutral or two (2) hots. Don't believe it? Call a ballast manufacturer instead of giving incorrect answers.
What is low voltage transmission?
In the supply industry it refers to circuits of below 1000 volts. Common voltages used are 120v, 208v, 230v, 240v, 277v, 400v, 415v, 480v.
How do you wire a 4-lamp electronic ballast?
The way a metal halide light is set up, there's a transformer in it called a "ballast." The ballast powers the bulb. You can wire ballasts to a lot of different voltages--which voltages you can use are dependent on the ballast in question--but 120v single phase is almost always one of the choices. So yes, you can do it.
If the ballast on a fluorescent light blows will the lamp still work?
If the ballast on a fluorescent light blows the lamp will not work.
