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Your building has a 3 phase 240v and you want to convert it to be 110v?
Wiki User
∙ 16y ago
Best to get quotes from two or three licensed electricians for the installation of the necessary extra fuses, breakers, etc., testing and commissioning (= handing over to customer to use) of a 120V panel for as many circuits as you want. Though the question does not specifically ask about DIY ("Doing It Yourself"), if you are not a licensed electrical technician you should not even think of doing this kind of work as a DIY project because 3 phase 240V power supplies can kill you if you don't know exactly what you are doing. Depending on your local wiring codes and regulations, it may be illegal to attempt to do such work if you are an unlicensed person.
Wiki User
∙ 16y ago
Wiki User
∙ 13y agoConnect a step-down transformer across one line of a three phase Y-connected service and the neutral point.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Wiki User
∙ 10y agoA 450v 3-phase 4-wire supply has a line-to-neutral voltage of 260 volts so a single-phase supply can be taken from one of the three lines and neutral. Then a 260/110 volt transformer is needed.
The voltages are dangerous so ask an electrician if in any doubt.
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How can you get 240V single phase power from a 240V 3 phase service Can you just connect to two poles of the 240V 3 phase service?
I'm sure this isn't what you want to hear, but you probably need to ask an electrician familiar with your service and what you want to connect. As a general answer, you can connect a 240v line to line resistive load like an electric water heater to any 240v source. If you also need the 240v to have 120v line to neutral, like a 240v electric stove that contains a 120v clock and oven light, then its possible if the 3 phase power is connected in a "high delta" configuration, and you connect to the correct leads. If you have a high delta service and want to ignore the 3-phase power service and wire most or all of the loads in the building as a single phase load, the utility may have to be consulted.
Can an American 240V dual phase dryer be converted to work in Korea with 240V single phase power?
you could possibly design a fix for it but it would be a lot of trouble. the American dryer has internal components that run off 110v and that 110v is available from the three wire 220v circuit in the typical usa residence. this is because of the third wire, the neutral. the Korean 220 would be 2 wire. you would have to go inside the dryer, add a 220/110 transformer and rewire the dryer so that the 110v loads come off that transformer. it would then no longer be ul listed and would have to be evaluated by the authority having jurisdiction in Korea and back here in the usa.
Will a 240v 3 phase welder run better than 240v 1 phase?
Yes, because you will be able to maintain current flow between phases.
What is the voltage for a single phase from a 415 volt 3 phase and neutral supply?
240V. 415 / 1.73 = 240
How does a 3-phase meter handle using on 220 volt single phase and does the meter measure the wattage usage accurately?
If you mean 220 single phase as in two hots and a neutral 110V-0-110V (in the US this would be 240V 120V-0-120V), then the answer is most 3-phase meters cannot be used. A few meters can be setup for either configuration, check the manual for the specific one you want to use. If you mean 220V single phase with just one hot wire and a neutral, then a larger percentage of 3-phase meters can be used, and will meter accurately. But again, the meter has have this as one of the setup choices. Check the manual. One possibility would be if you have a meter that can be setup to use 3 CT's and tell it that it is hooked to a wye system with neutral. If it sees current on just one phase to neutral, this is a valid condition, since the system could be feeding unbalanced loads (remember the meter thinks this is a 3-phase system). This would only work if the meters wiring diagram calls for CT's on all 3 phases. Many meters call for only two CT's, calculating the 3rd leg by using the two known values. This type of setup would not meter accurately for your single phase, I believe. And this will not work on a 110V-0-110V system, because a 3-phase meter expects 120 degrees between phases, not 180. Oh, I didn't mention the case where you might have two hots and no neutral. The 3-phase meter would have to be set up for a delta connection as far as the meter was concerned, since there is no neutral. It could work, not sure on this one.
How do you convert a 240v drill to 110v?
One word: KABOOM.
Can 240v coil contactor be connected to 110v supply?
no
IS there an adapter for a 240V heater that will allow you to plug it into two 110V outlets?
No. Sounds like a fairly hazardous thing to try as well. If it's to use a heater in the US, then buy a US heater at a lower cost than any adaptor that might do the job for you. If it's to use on a UK building site that has 110V but doesn't have 240V, it breaks all the rules because you end up with 240V where you shouldn't.
Does a hot point dryer made in 96 or 97 come with a 110v cord?
All non-commercial dryers that I am aware of (in the US) require 240V single-phase power. Some large commercial dryers require 3-phase power.
240v box outside for a hot tub you need a 110v receptacle Can you wire it off the 240v box?
Using a box that is hire voltage than what you need can cause a short, and even a fire. So using a 240V box, when all you need is a 110v receptacle, wouldn't be a good idea.
How can you get 240V single-phase power from a 240V 3-phase service Can you just connect to two poles of the 240V 3-phase service?
If the 240V 3-phase service is 240V phase-to-phase, then you can get 240V single-phase by simply picking two phases (poles, as used in the question) and connecting the load across them. This is simply one third of a standard delta connection. If you need 120V/240V split phase, i.e. with a neutral, as used in residential services, you will need a transformer. If the service is actually a four wire "quadraplex" service, however, you will probably already have that 120V/240V with neutral connection phase available. In this case, you will need to pick the two phases correctly in order to get the proper 120V service half.
Can a 240V - 110V stepdown transformer be reversed to take a primary load of 180V to secondary 240Volts?
No
Can 240v tools be converted to 110v?
It would be better if you got a transformer and stepped up the voltage.
How can you get 240V single phase power from a 240V 3 phase service Can you just connect to two poles of the 240V 3 phase service?
I'm sure this isn't what you want to hear, but you probably need to ask an electrician familiar with your service and what you want to connect. As a general answer, you can connect a 240v line to line resistive load like an electric water heater to any 240v source. If you also need the 240v to have 120v line to neutral, like a 240v electric stove that contains a 120v clock and oven light, then its possible if the 3 phase power is connected in a "high delta" configuration, and you connect to the correct leads. If you have a high delta service and want to ignore the 3-phase power service and wire most or all of the loads in the building as a single phase load, the utility may have to be consulted.
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.
Can you rewire a 240v lamp light fitting or small appliance to 110v and if so how?
Yes, you need a transformer
Can you convert 240 volt to 208 volt?
I'm sure you could, but it wouldn't be practical. The reason for this is because 208 volts between two phases comes from a three phase transformer, while 240 volts phase to phase comes from a single phase, center tapped transformer. If you're asking regarding a resistive load, such as a heater, the load should work with 240 volts or 208 volts. There will be a slight difference in performance, but it shouldn't be very noticeable. If you're asking because you have a motor load rated for 208v, you'll likely see that the motor requires three phase 208 volt power and you only have 'two phase' 240v power. You can however supply a three phase equipment or motor with a device called a phase converter.
