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to derive 120 volts from 480 volts you have to use a transformer, based on your needs. If you needed 100 amps at 120 volt single phase you would need a 12kva transformer. This is just an example.
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoThe way the question is stated this type of a transformer is a step up transformer. A voltage of 120 volts is applied to the primary side of the transformer and the 230 load is connected to the secondary side of the transformer. Since you also used the category Pool Heating, the transformer must be used in the control unit of the pool heating controls.
The other option is that the transformer is a step down transformer 230 to 120 volts and is used for 120 volt control voltage, the primary is then connected to the 230 volts. In the control unit, the transformer will probably be connected to the supply 230 volts circuit from the heater circuit. There should be an in line fuse between the incoming 230 volts and the primary connection to the control transformer. The fuse should be rated at 1/2 amp for proper protection.
Wiki User
∙ 9y agoTo convert 480 to 120 a transformer will have to be used. The transformer needs to be the right voltage and amp rating to handle the load that will be connected on the 120 side.
Wiki User
∙ 14y ago360
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Can you convert 120v household into 220v 3 phase for a machine?
You can buy a converter.
Can you use a 30 amp disconnect switch for a 30 kva transformer?
im have a 30 kva transformer 3 phase 480v 80 amp panel 120v what size disconnect should I use
Can you convert a 120 volt Yamaha clavinova to 240 volts?
Electronic technician will convert in no time. You need 240v power transformer in place of same wattage 120V. Super easy.
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.
How do you get 480v circuit from 120v?
You can use a step-up transformer. Transformers are rated in primary voltage, secondary voltage, kVA, phases (single and three) and other parameters then equipped with indoor and outdoor enclosures. Be sure to consult a professional engineer or electrician when choosing and installing a step-up transformer. There are several NEC issues involved as well as choosing a transformer that is right for the type of load you have. One without the proper licensing AND knowledge of transformer circuits should never install 480V wiring or transformers.
Can you feed a 208v 200amp panel from 480v 20amp circuit?
Not directly, you would need to transform 480v circuit to 120v with a transformer first.
Can you take single phase of 120V with a hot wire and a neutral step up to 480v and then step down to 2 phases of 120V or do you have to input 2 phases of 120v to get 240V out?
Theoretically that can be done with transformers, but the power available would still be limited by the circuit breaker on the original 120 v supply.
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.
Can you convert 120v household into 220v 3 phase for a machine?
You can buy a converter.
480 transformer to 120 ac current what is the kva on transfomer?
The kVA rating will be listed on the transformer's nameplate, which is usually on the front of the transformer. The 480v to 120v is irrelevant, because many transformers with different kVA ratings convert 480 volts to 120 volts. The kVA ratings can be different and thus affect the rated current through the transformer.
Can you use a 30 amp disconnect switch for a 30 kva transformer?
im have a 30 kva transformer 3 phase 480v 80 amp panel 120v what size disconnect should I use
Can you convert a 120 volt Yamaha clavinova to 240 volts?
Electronic technician will convert in no time. You need 240v power transformer in place of same wattage 120V. Super easy.
How do you power a 480V device from 120V home or kitchen outlet?
A: My advice is do not try it 120 v will require 480v /120 or 4 times the current. assuming 100% efficiency. a transformer can do it but there will be a loss of 20% . House wiring is 15 amps per circuit . So if your whatever unit needs more the 3 amps it just cannot be done. A PWM can also do this job more efficiently but then again the total power is in question.
Can a 480V a 12 ga wire safetly carry 4 x as much power as it would at 120V?
#12 wire will carry about 20 amp 20 X 480 volts = 9600 watts 20 X 120 volts = 2400 watts 4 times.
120V light fixtures wall mounted you want to convert to 240V for a house overseas?
It will work it you use 240 volt light bulbs.
How do you convert 380v 3 phase to 220v 3 phase?
Mathematically, just divide 480 by the square root of three. Electrically, 480V refers to the line-to-line value of a three phase system. For example, measure the voltage across A-phase and B-phase and you'll get 480V. 277V is the line-to-neutral value. Measure the voltage across A-phase and the neutral conductor and you should get 277V.
How do you convert from 480 volt to 220 volt or 110 volt?
AC voltage conversions are usually done with transformers. Most commonly, a 3 phase 277/480v system is transformed to a 3 phase 120/208v system. You can, however transform to anything you like with the proper transformer. If you are trying to convert 480v single phase to 240v single phase, such as for home use, then ask for that type transformer. It would use only 2 phases of the 3 phase system. Using 2 phases is called single phase and there are reasons for this that are beyond the scope of this answer. 220v and 110v are field measurements of what is considered 240v and 120v when ordering equipment or applying code.
