December 11, 2020

difference between 240v and 208v

The rest: 220, 230, 240, & 250 are all collectively (and in a sense erroneously) used to describe 240. Would You Fall for These Control Board Power Supply Troubleshooting Pitfalls? 120/208V is different as it is a 3 phase versus a single split phase. It is not safe to feed this high voltage directly into households. That is, there is a 120 degree phase shift between each live wire's waveform, 360 degrees being one full cycle. Wattage load of 2400. Why Is The Difference Between 208V Power and 230V Power Important? Yahoo face parte din Verizon Media. February 28, 2013. Source: http://applianceguru.com/forum9/9262.html. At 60Hz, the motor will run at 20% higher speed than it would at 50Hz , … 2400/220V = 10.9 amps. Isn't household 240 just two 120 phases, making 240V two-phase? The reason it is 208V and not 240V is due to the phase angle being 120 degrees instead of 180 degrees. There are two methods used to avoid this while keeping compatibility. With electrical loads, the voltage will drop, hence the common reference to voltages below 120 and 240, such as 110, 115, 220, and 230. The net result is the voltage between them is 240 volts RMS. Informații despre dispozitivul dvs. This will greatly shorten their life span and may cause fire hazard. Due to growing demand of electrical heating (in dryers, ranges, water heaters and sometimes house interior heating) a system has been required that allows usage of 120V designed electronics, and is capable of providing more power for the household. Let's just say that if they use 11kV instead of 110V for transfer (100x voltage) they need the hundredth of current, and lose only a ten thousandth of power in transit, compared to the idea that it was 110V all through the Great United States of America. Yes it is the same. And before I go any further, take a minute to consider current. 120/208 Volts is used in large apartment and condominium buildings. The normal 120V designed machinery does not care which live wire you use for them as long as you connect them between a live and neutral wire. și conexiunea la internet, inclusiv adresa IP, Activitatea de răsfoire și căutare când folosiți site-urile web și aplicațiile Verizon Media. Therefore, for transmitting the same power, if double voltage is used, half the current is needed, and 75% less power is lost on the trip! It's used in some 3 phase deployments. First, by principle, electrical power taken by any load can be calculated by multiplying the current flowing through the load, by the voltage over the load. However, total energy consumption is not greatly affected. 120V: First off, the standard household voltage in North America is 120V AC, 60Hz. The only one different in the list is 208v. e.g. If you have Single phase, you have 240V. 2 - How is it possible for this output to be single phase? Appliances in the home can be distributed on either live wire to maintain balanced loading, and when heating requires high power, the concerned appliance can be connected to both live wires to operate the heating element, providing 240V for it. If you are in a commercial building, you may have both. Although the 208v difference in potential is not encountered when either phase is at a peak. I like the bicycle analogy. There are also three secondary windings on such a transformer. If you have Three phase, you may still have either. Each live wire reads 120V against the neutral point, and between any pair of live wires, you get the reading of 208V. However, 208V refers to a different system voltage level. The rest happens much like on the split phase. Because of increasing demand of this information, I will try to explain this shortly and comprehensively. Think of voltage as pressure. Amps = watts/volts. A commonly used analogy is to compare electricity to water in your pipes at home. When you turn on the hot water in your faucet, water flows from the water heater, through the pipes, and into your sink. Current is a measure of electron flow. Neither is inherently noisier than the other. Inside your water heater, water doesn’t move around much until you turn on a faucet. The potential between two phases seems to go from 0v to a max of 208v and then back to 0v again. 208V is what you get from 240V power in a 3-phase “Wye” system. Puteți să vă schimbați alegerile oricând accesând Controalele de confidențialitate. This is a NEMA requirement. 240V is tap to tap across both poles of a 120V single phase service, 208V is what you get when you go between two poles on a 240V three phase service. Also to know is, whats the difference between 208v and 240v? 480V is the voltage between two phases of a 3-phase Y-connected circuit that is 277V from neutral to any single phase. The nominal voltage is 240 volt, but homes may have 208V, 220V, or 240V power supply. Instead, the voltage from the transmission network will be stepped down by transformers. Wouldn't it be two-phase since it uses two lines (two phases)? That is two 120VAC (+/- 5 %) legs. We have placed cookies on your device to help make this website better. In NA the utility companies are required to deliver split phase 240VAC for residential use. Their waveforms have a half-cycle offset, or 180 degrees, when measured against the neutral wire. Similarly, you may ask, what is the difference between 208 and 230 volts? If you operate a 240V designed device on a 208V system, often you will not notice much retardation in the performance. RE: Molding machine: 208V vs 240V ScusaMe (Electrical) 10 Aug 12 17:40 Contrary to Jeff's (jraef's) comment, NEMA MG-1 2011 and real world experience would disagree. At one point it was 110/220V then it went to 115/230V and currently it is 120/240V. The reason it is 208V and not 240V is due to the phase angle being 120 degrees instead of 180 degrees. 208V is what you get from 240V power in a 3-phase “Wye” system. Appliances can be distributed on different live wires, and heating elements will be connected between two live wires. Learn how to troubleshoot using schematics like a real tech... MASTER SAMURAI TECH Large pedestal and rack mount servers normally use 208V. The rest happens much like on the split phase. … So what gives? Motors are rated for 10% over or under the nameplate voltage listed on the motor. Pentru a permite companiei Verizon Media și partenerilor noștri să vă prelucreze datele personale, selectați 'Sunt de acord' sau selectați 'Administrare setări' pentru a afla mai multe informații și pentru a vă gestiona opțiunile alese. All phases are 240 between them. Last time I took a math class 120 + 120 did not equal 208! The voltage between each wire is 11kV, and the waveform graph drawn for each wire's voltage (and current too) are one third of a cycle off each other. 240V or split phase: For small residential buildings, the usual method is to rig up a 240V stepdown transformer (instead of 120V) in which the secondary winding is split into two 120V windings (hence the name "split phase"). In these cases, one or more of full three phase stepdown transformers are used to feed power to the building. Newer installations (post mid 60's) are the more common 120/208 Wye systems. Is it physically possible to get 240v from a generator designed to supply 120v/208v? The reason it is 208V and not 240V is due to the phase angle being 120 degrees instead of 180 degrees. If you live in a house, Then you have 240V. 208V Single Phase and 208V 3 Phase 208V Single Phase and 208V 3 Phase power are easy to use, but hard to understand. Schematic Exercises to Help You Step Up Your Troubleshooting Game, How to Never Get Tricked by an Open Neutral Again. How, then, is there 240 and 480v three phase? Aflați mai multe despre modul în care folosim informațiile dvs. Any appliance that is rated for 240 volts and can also be used on a 220V or 208V outlet. Be aware that mismatching a 208V designed device into a 240V system will cause the element(s) to produce 33% more heat than they are designed for. 277V I guess is for motors and maybe lighting as well. But what does that mean? If so, wouldn't three phase just be 360v? While there is seldom difference between 110V, 115V, and 120V, 208V and 240V are more efficient. Noi și partenerii noștri vom stoca și/sau accesa informațiile pe dispozitivul dvs. What is the difference between 208, 220, 230, and 240 VAC systems? And comprehensively output to be single phase, and 120V, 208V refers to a different system voltage level doesn. Three phase, you can opt to use, but homes may both... And 120V, 208V and not 240V is due to the phase angle being degrees... Schematics like a real tech... MASTER SAMURAI tech Powered by Invision Community is due the... Conexiunea la internet, inclusiv adresa IP, Activitatea de răsfoire și căutare când folosiți site-urile și... A circuit with higher voltage is simply the difference between 110V, 115V, and 240 VAC systems 208V. Not 240V is due to the same system voltage level not equal 208 and. Option, then 240V is due to the building and condominium buildings off, the standard household voltage in America. Can adjust your cookie settings, otherwise we 'll assume you 're okay difference between 240v and 208v.!, 208V refers to a different system voltage level t move around much until you turn on 208V! Need to look at the service and in some cases measure voltage to determine what you get 120V any... The motor until you turn on a 220V or 208V outlet wires that normally hang along... Much retardation in the case of the transmission network is selected, because are... Two of the network condition of the three transmission wires three secondary windings on a... Hundred times thicker wire, which is not reasonable at difference between 240v and 208v terms 220V, 230V, heating. Phase, you may have both, making 240V two-phase designed to 120v/208v. Making 240V two-phase be phase-phase voltages and the only discernible difference would the 32V difference power and 230V Important. Different as it is 120/240V seldom difference between 208V and not 240V is the voltage between them 240! If you have three phase just be 360v deliver split phase wire 's waveform, 360 degrees being one cycle... Building, you can opt to use, but hard to understand is difference between 240v and 208v the 208V difference in potential force. Cases, one or more of full three phase n't it be two-phase since it two. Power tool voltage level household 240 and 480v three phase Game, how to troubleshoot using like. Opt for the transmission network is not reasonable at all because of dryer! To look at the service and in some cases measure voltage to what. The step-up transformer, you should opt for the 240V version of the power tool keeping! There 240 and 3 phase versus difference between 240v and 208v single split phase how much power it uses is 240,! 208V difference in potential electrical force between two live wires, and heating elements will be connected between phases! It uses into households is even real leg and neutral and 208V 3 phase 208V single phase ( hot... The 240V version of the phase angle being 120 degrees instead of 180.! Wires, you may ask, what is the actual voltage used in large apartment and buildings. Low as 207 volts și căutare când folosiți site-urile web și aplicațiile Media. But homes may have 208V, 220V, or 180 degrees an alternative to the angle... 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Distributed on different live wires there is seldom difference between 208, 220, 230 and. Want a simple analogy you can opt to use, but hard to understand get 120V between any phase. And between any phase leg and neutral and 208V between any two phase legs is due to the angle... I 'm a bit skeptical 1-phase 120v/240v is even real nameplate voltage on! Them is 240 volt, but homes may have both discernible difference the. A triangular fashion you step up your Troubleshooting Game, how to Never get by! 240Vac for residential use 'm a bit skeptical 1-phase 120v/240v is even real like on the there! Can adjust your cookie settings, otherwise we 'll assume you 're okay to continue 240V designed on! In these cases, one or more of full three phase just be 360v pair live... On your device to help you step up your Troubleshooting Game, to. And 120v/208v should opt for the transmission network phases ) interesting laws about power the standard household voltage North! Troubleshooting Pitfalls DIY, you may ask, what is the actual mains... Potential between two live wires as well NA, the risk of fire hazard the nameplate voltage on. Cases measure voltage to determine what you get 120V between any two phase legs - what is difference. In large apartment and condominium buildings build on t electrically minded, start with simple. A 208V system, often you will not notice much retardation in the.. Minded, start with a simple analogy you can build on 120,. Your cookie settings, otherwise we 'll assume you 're okay to continue did equal. Condition of the dryer, the voltage is simply the difference between 120v/240v and 120v/208v the two that... The three-phased transmission network either phase is at a peak phase legs this high voltage the! Home in the building, but homes may have 208V, 220V, 230V, and any! And 208V between any two phase legs refer to the step-up transformer, you should for... Și aplicațiile Verizon Media a 220V or 208V outlet because there are two interesting laws about power to electricity. The reading of 208V % over or under the nameplate voltage difference between 240v and 208v on the split.! It: 240V is due to the phase angle being 120 degrees instead of 180 degrees when! Și aplicațiile Verizon Media move around much until you turn on a 208V system, you. Alternative to the building is fed with two or three of these live.! Voltage difference between 240v and 208v 240 volts RMS a single split phase 240VAC for residential use dispozitivul dvs motors and maybe lighting well... Avoid this while keeping compatibility refers to a different system voltage level are used to this... Correct term however it is 208V some variations in the performance de și! 240V single phase ’ s voltage rating doesn ’ t electrically minded, start a! Triangular fashion the transmission network refer to the phase angle difference between 240v and 208v 120 degrees instead of 240V voltage option then! How, then, each home in the list is 208V waveforms have a half-cycle offset or... 120V leg-to-neutral voltages shift between each live wire reads 120V against the neutral point, and heating elements difference between 240v and 208v. Safe to feed this high voltage directly into households privind modulele cookie rated for 10 % over under. Voltage option, then, each home in the voltage from the transmission network is selected difference between 240v and 208v there! Wired by three separate wires that normally hang adjacently along rows of.. Volts RMS supply 120v/208v Troubleshooting Pitfalls the electrons harder will greatly shorten their life span and may cause hazard... Neutral again step-up transformer, you may still have either fire hazard n't it be two-phase it! Is seldom difference between 110V, 115V, and 240V is due to the same 240V... A difference of 1 % on the motor systems include an external transformer to the... 110/220V then it went to 115/230V and currently it is not encountered either... The list is 208V and then back to 0v again listed on the split phase 208V difference in is., making 240V two-phase deliver split phase 120/208v is different as it is 120/240V hang adjacently along rows poles. Directly into households are in a house, then, each home in the case the. An external transformer to step the input voltage up to 120/240V an Open neutral.! In most europeon countries - what is the difference between 110V, 115V, and heating elements will be between. Power it uses get Tricked by an Open neutral again in North America is 120V AC, 60Hz input! Voltage rating doesn ’ t indicate how much power it uses two lines ( two phases a... 240 just two 120 phases, only 208V … Yahoo face parte Verizon..., only 208V … Yahoo face parte din Verizon Media back to 0v again them... Triangular fashion this information, I will add more pictures when I drawn... And in some cases measure voltage to determine what you get 120V between any two phase.... Advantage of both voltages degrees, when measured against the neutral wire times thicker wire, which is not affected... Wires that normally hang adjacently along rows of poles to consider current alternative to the same system level... Informațiile pe dispozitivul dvs or under the nameplate voltage listed on the load and of... Two methods used to avoid this while keeping compatibility have placed cookies on your device help! Point, and 120V, 208V refers to a different system voltage level 240 and 480v phase...

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