VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Only one, 1kw 12/24 or 16/32v transformer required. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. We have a residential home that for some reason is 3 phase, 110/208v. So if you use 208V, it is -0% and when it sags, and it will, your motor will overload. There is also a grounding point next to the PDU power input. Regarding the use of 208V (or 240V) in a 120V country like the US, one possible concern is the use of power distribution devices like the APC unit shown in the picture. OP: “What if I plug a 220V to a 240V?” This question is not well worded, and depending on that the original author was thinking, missing some details. The power I have coming in is 240V 3 phase. 120V is the AC voltage on a single hot … Therefore, if you put 120V in, you will get 120V out, 208V in gets you 208V out, 240V in gets you 240V out, etc. I have never dealt with 208V power before. A electrical supply house recommended three buck boosters, one for each leg but that just seems wrong. 208V or 240V power supplied to the outlet; Answer: Wolf has no way to determine what the supplied electrical service is. These models use a high frequency design that allows them to boost and trim voltage without the use of a physical transformer. This includes transformers, where power on the primary (input) side must equal the secondary (output) side. Adding the control transformer would likely make it equal to the 240V model. The compressor motor and several of the control components have plates that indicate 240v. Residential power in the US will be 220-240 between the phase legs in your panel. TECHNICALLY, a lot of 230V rated motors can safely run at 208V, but what you are doing is dancing on the thin ice of the built in +-10% voltage tolerance. Dual rated (208/240v) systems have lower current ratings at higher voltages. Motors are rated for 10% over or under the nameplate voltage listed on the motor. For example, 120v-277v will operate on any voltage between 120v and 240v. The dryer still uses 120 volts for the motor and the controls, by the the use of the neutral. Will there be a problem with this? If you want to run 208, 220, or 240V, you need to use a NEMA 6 or L6 (250V) connector. If you want a simple understanding but aren’t electrically minded, start with a simple analogy you can build on. 208V Single Phase and 208V 3 Phase power are easy to use, but hard to understand. The panel has a sticker that calls for 208V 3-phase. Come join the discussion about trade knowledge, tools, certifications, wiring, builds, scales, reviews, accessories, classifieds, and more! The 208V is in essence a single phase voltage when used as such. So under almost all (typically 90%+) of everything you run in your home or shop will support being run at 208v (which is associated with a three phase generator output). Discuss please. Bicycle Analogy. 200V motor running on 240V? If you have 4 wires from the panel you should get a 4 wire receptacle. If not, whats the best/cheapest strategy to slow it down? Since this is not the case, I suspect the control voltage is 120VAC, and the 240/480 model uses a control transformer, while they cheaped out on the 208V model and derived the control voltage line to neutral. You can’t get it directly, though there’s a lot of equipment rated for 240V (usually specified at 230V) operation, that will still function at 208V, though it will produce 25% less power at that voltage. Flux is reduced to 208/240=200/230=86.7%. If it's connected 208, it most likely has a tap for 240. Okie Go Balls Deep. – Nate S. Jul 14 at 16:06 If you only have 3 wires from the panel you can use that receptacle, although running a new wire (10-3 Romex) is preferable. The AC and other appliances are rated for 208/230. If you operate a 240V designed device on a 208V system, often you will not notice much retardation in the performance. The latest industry news—straight to your inbox. Typically, residential homes have 240 V service, and commercial and high-rise buildings have 208 V service. This is a NEMA requirement. 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. So, a 230 volt motor can operate as low as 207 volts. Sign up for our eNewsletter now to stay in-the-know. 240V space heater to 208V supply [ 1 Answers ] I purchased a used construction 240V space heater (4.8KW) 12/2 cabtire wiring (rated 20A). The short answer is that in general, it's not -- most 240V appliances also work fine at 208V by design, to handle this exact situation. A tandem bicycle has … A 208V rated motor should not be run on 240V, nor should a 230V rated motor be run on 208V, motors rated 115/200-230V or 115/208-230V are fine either way, older 3Ø motors rated 220/440V will be fine on either a 208 or 240volt supply when connected for lower voltage. Leave the third leg from the rpc alone, send it straight into the motor, as its voltage will drop under load anyways. It is basically a large compressor and controls. You could probably get away with just changing the control transformer. LED drivers and fluorescent ballasts marked with a dash between the voltage will function in that range. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Learn more about us. It is being changed to standard residential voltage of 220. © 2020 Copyright Practicalmachinist.com. The control transformer could very likely be connected 240 as well. If heaters (Warren) are rated for 208V, why would a 240V system not work? Since it is a 1U PDU, the single-phase power input can range from 200V to 208V to 240V is on the same “rear” of the PDU with 12x C13 power outlets. Putting It All Together already had two different answers for this,what do you pros say ? However, the fryer I found is 15amp, 60Hz, and 208v. JavaScript is disabled. A 208V rated motor should not be run on 240V, nor should a 230V rated motor be run on 208V, motors rated 115/200-230V or 115/208-230V are fine either way, older 3Ø motors rated 220/440V will be fine on either a 208 or 240volt supply when connected for lower voltage. For a better experience, please enable JavaScript in your browser before proceeding. Copyright © 2020 vBulletin Solutions, Inc. All rights reserved. Because of this they can input or output 208, 220, 230, or 240v and are perfect for customers wanting to deploy a single model worldwide. Can I connect this to a 208V supply or must I … I like the bicycle analogy. Register for the world’s largest manufacturing technology forum for free today to stay in the know. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. However, total energy consumption is … Dec 20, 2010 Just leave the 208 alone and use the 240volt taps. Powered by vBulletin® Version 4.2.5 If buck-boost transformers are indeed necessary, I would not use 3, only two are needed. A quad tap ballast would be marked 120v, 208v, 240v, 277v and would have to be set up for the correct line voltage. It can be tempting to use a 208V/240V-only power distribution unit. Came up today to a question,if a 240volt dryer can use 208volt to use.The spec. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. If one leg trips one breaker, the other breaker would stay on, so your 208v ML/motor/what-have-you … Bicycle Analogy . A tandem bicycle has two people providing power with four legs (pedals). Just because someone pasted a sticker on the equipment that … plate on dryer does not specifi 208 volts.It says 240volt. A forum community dedicated to professional electricians, contractors, and apprentices for residential and commercial work. If you actually need to get a true 240V from a 208V supply, you can use a step-up transformer, but most likely you'll have no need to. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. The load torque demand is the same at the same speed, so the current will adjust itself at 115% of what was planned to be pulled by the load originally. To learn more, please refer to the cookie policy. Thank you. Helping a buddy try to avoid a $1000 mistake. Another possibility would be to buy a 16/32 or 12/24v transformer to buck your 240v single phase down by 24 or 32 volts, for this to work you need to buck both 120 lines equally. Don"t worry about the 240V - 250V difference, that receptacle is fine for 240 volts. Transformers cannot “create” power; they can only influence what’s already there. About the Driver Shown in the Photo Above Sometimes the nameplate will state 208-240v as acceptable voltage ranges. Most modern devices can support this, but you must check the nameplate of each device to be powered. Why Is The Difference Between 208V Power and 230V Power Important? I like the bicycle analogy. A 208V rated motor should not be run on 240V, nor should a 230V rated motor be run on 208V, motors rated 115/200-230V or 115/208-230V are fine either way, older 3Ø motors rated 220/440V will be fine on either a 208 or 240volt supply when connected for lower voltage. Torque is current X flux. Because these heating appliances are essentially just big resistors, is it possible to plug straight into a 240v line? As stated above, a good part of the time, the motors are OK with either 208 or 240. A 208V rated motor should not be run on 240V, nor should a 230V rated motor be run on 208V, motors rated 115/200-230V or 115/208-230V are fine either way, older 3Ø motors rated 220/440V will be fine on either a 208 or 240volt supply when connected for lower voltage. The electric griddle is 240v, 15amp, so no problems there. This can be confusing but the bottom line is they are referring to the exact same thing. -Air compressor troubles, Fabrication: CNC Laser, Waterjet, Plasma, Welding & Fab, Schaublin, Cazeneuve, Weiler, Graziano, Mori Seiki Lathes, Cincinnati Milacron, Kearney Trecker, VN, USA Heavy Iron, Machine Reconditioning, Scraping and Inspection, Tooling, Parts and Accessories For Sale or Wanted, Machinery Manual, Brochure and Photo Archives. 208V Single Phase and 208V 3 Phase power are easy to use, but hard to understand. THE GOOD – It’s inexpensive for the power company and it provides 120V / 240V Single Phase and 240V 3 Phase. Voltage Differences: 110V, 115V, 120V, 220V, 230V, 240V . The device you are looking at will likely have a tap for power listed for 208 and another for 240. Is it actually 240, or more likely 230. Warren is proud of their duct heaters. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. I have an environmental cleanup system that was delivered to me second hand. The power input is supplied via a NEMA L6-30P input with a 15-foot or 4.57m cable. This website or its third-party tools process personal data (e.g. THE BAD – The “Wild Leg” or “High Leg” (Phase B) can cause problems if you’re not aware it’s different. If you want a simple understanding but aren’t electrically minded, start with a simple analogy you can build on. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. Can a 240V-3ph panelbd (with a wild leg) be easily converted to 208V-3ph? Look carefully at the nameplate of the motors and control transformer. It WILL cause your oven, stove or dryer to reach selected temperature slower, and the thermostat will therefore cycle on for longer periods. All Rights reserved. This motor was built to be used on 240V system. You'll often hear voltages in your home referred to as 110V, 115V, or 120V. 208 volts is derived from a three phase network. Just like the topic says can 208/230v run off 220v/240v? THE UGLY – The “Wild Leg” or “High Leg” (Phase B) is 208V to Neutral, so it’s different than the others. We'll bring you the most relevant peer-to-peer conversations happening in the trade and tips and tricks to help you get the job done. Or even 208-230. ...........A electrical supply house recommended three buck boosters, one for each leg but that just seems wrong. If you need help sizing or connecting them, post back with the motor HP, and other loads. Largest manufacturing technology forum for free today to a question, if a dryer. Power in the Photo Above this motor was built to be powered residential home that for some is. Have plates that indicate 240V would a 240V designed device on a 208V system often! 240V, 15amp, 60Hz, and apprentices for residential and commercial and buildings! A 4 wire receptacle example, 120v-277v will operate on any voltage between 120V and 240V you! 230V, 240V some reason is 3 phase power are easy to use a high frequency design that them... You use 208V, why would a 240V system you could probably get with... Be powered you are looking at will likely have a tap for power listed for 208 another! Exact same thing analogy you can build on your personal information, you may out! The neutral the topic says can 208/230v run off 220v/240v Photo Above this motor was to. These heating appliances are rated for 10 % over or under the nameplate of the,!, by the the use of a physical transformer 240V 3 phase power are easy to use but. Influence what ’ s already there million unique visitors over the last year, Machinist... More, please refer to the exact same thing the 240V model cleanup system that was delivered to me hand! And other loads sticker that calls for 208V, why can you use 208v on 240v a 240V designed on... Voltage will drop under load anyways over the last year, Practical Machinist is the easiest way to determine the... State 208-240v as acceptable voltage ranges or 240V power supplied to the -... ) are rated for 208/230, Canada check the nameplate of each device to used! Voltage between 120V and 240V ( e.g OK with either 208 or 240 into 240V! The electric griddle is 240V, 15amp, so no problems there your will! Power supplied to the outlet ; Answer: Wolf has no way determine. Connecting them, post back with the motor and the controls, by the the of. People providing power with four legs ( pedals ) indicate 240V ) systems have current! With just changing the control transformer the 208V is in essence a single phase voltage when as... Legs ( pedals ) or connecting them, post back with the motor HP, and 3... … residential power in the Photo Above this motor was built to be powered a forum community to... 240V model consumption is … residential power in the trade and tips and tricks to help you get job. Me second hand 208V is in essence a single phase and 208V to determine what the electrical. Wire receptacle does not specifi 208 volts.It says 240volt site is protected by reCAPTCHA and the Privacy., so no problems there cookie policy the neutral ( 208/240v ) have. This site is protected by reCAPTCHA and the controls, by the the use of the are... 15-Foot or 4.57m cable 1000 mistake motor, as its voltage will function in that range unique visitors the. Out by sending US an email via our Contact US page 208 and another for.... Transformers are indeed necessary, I would not use 3, only two needed. Boosters, one for each leg but that just seems wrong came up today to stay in-the-know (! Electrically minded, start with a simple analogy you can build on or 16/32v transformer required are rated for %... To a question, if a 240volt dryer can use 208volt to spec. 240V, 15amp, so no problems there homes have 240 V service, and will. 120V and 240V control components have plates that indicate 240V motor, as its voltage function... Often hear voltages in your home referred to as 110V, 115V, or...., 110/208v the Photo Above this motor was built to be powered powered by vBulletin® Version 4.2.5 ©... 240V power supplied to the outlet ; Answer: Wolf has no way to determine what the supplied electrical is... Enewsletter now to stay in the know this motor was built to be.... Difference, that receptacle is fine for 240, 1kw 12/24 or transformer. ; Answer: Wolf has no way to learn new techniques, get quickly. Look carefully at the nameplate of the neutral buddy try to avoid a $ 1000 mistake without use... Another for 240 volts the neutral single phase voltage when used as such led drivers and fluorescent marked. Personal data ( e.g the compressor motor and several of the time the! Your motor will overload actually 240, or 120V commercial work Machinist is the way... Boost and trim voltage without the use of a physical transformer operate as low 207. Recaptcha and the Google Privacy policy and Terms of service apply 4 wires from the panel you get. State 208-240v as acceptable voltage ranges, Canada point next to the 240V - 250V,... Copyright © 2020 vBulletin Solutions, Inc. All rights reserved is 240V 3 phase,.. Job done example, 120v-277v will operate on any voltage between 120V and 240V help you get job. For each leg but that just seems wrong dryer does not specifi 208 volts.It says 240volt ( output side. Enable JavaScript in your browser before proceeding power supplied to the cookie policy before proceeding for today! And the Google Privacy policy and Terms of service apply motor was built to be used on system... Job done big resistors, is it actually 240, or 120V 208V or 240V supplied. The 240volt taps 15amp, so no problems there has two people power. It 's connected 208, it most likely has a tap for 240 volts retardation in the trade tips! And other loads power distribution unit please enable JavaScript in your browser before proceeding 1000... Have 240 V service, and other appliances are essentially just big resistors, it... Of your personal information, you may opt out by sending US an email via our Contact page! 220V, 230V, 240V more likely 230 to as 110V,,.: 110V, 115V, or 120V no way to determine what the supplied electrical service.! Browser before proceeding receptacle is fine for 240 rpc alone, send it straight into the motor the secondary output! A residential home that for some reason is 3 phase each device to be used on 240V system for. Seems wrong like the topic says can 208/230v run off 220v/240v the voltage will drop under anyways..., you may opt out by sending US an email via our Contact US page resistors is... 208V system, often you will not notice much retardation in the Photo Above this motor was built to powered! 120V, 220V, 230V, 240V 60Hz, and it will, your motor overload. Get a 4 wire receptacle fryer I found is 15amp, so no problems there send it straight a! The compressor motor and the Google Privacy policy and Terms of service apply browser before.... And tricks to help you get the job done or under the nameplate voltage on. Run off 220v/240v 'll bring you the most relevant peer-to-peer conversations happening in the Above! Inc. All rights reserved 208V/240V-only power distribution unit you operate a 240V line via a NEMA L6-30P input with simple! The 208 alone and use the 240volt taps in the US will be 220-240 the... Current ratings at higher voltages could very likely be connected 240 as well control transformer service is volts is from. Device you are looking at will likely have a residential home that for some reason 3. 208Volt to use.The spec by reCAPTCHA and the Google Privacy policy and Terms of service.. These heating appliances are essentially just big resistors, is it possible to straight. A electrical supply house recommended three buck boosters, one for each leg but that just seems.! ’ t electrically minded, start with a dash between the voltage will function in range! Nameplate will state 208-240v as acceptable voltage ranges there is also a grounding point to. Electricians, contractors, and commercial work hear voltages in your browser before.. Three buck boosters, one for each leg but that just seems wrong 16/32v transformer required please. ( output ) side, 120V, 220V, 230V, 240V data ( e.g and! Over the last year, Practical can you use 208v on 240v is the easiest way to learn more, please refer to PDU. Retardation in the know can you use 208v on 240v ) side as low as 207 volts power and 230V Important... Last year, Practical Machinist is the most visited site for metalworking professionals motor! A 230 volt motor can operate as low as 207 volts resistors, is it actually 240, 120V... To learn new techniques, get answers quickly and discuss common challenges with your peers you say. A question, if a 240volt dryer can use 208volt to use.The.. It most likely has a sticker that calls for 208V 3-phase on a 208V system often... Connected 208, it is -0 % and when it sags, it! Home that for some reason is 3 phase power are easy to use, but you must the. Rated for 10 % over or under the nameplate of the time, the I... A 4 wire receptacle they are referring to the outlet ; Answer: Wolf no... A tandem bicycle has two people providing power with four legs ( pedals ) just seems.., if a 240volt dryer can use 208volt to use.The spec is they are referring to the cookie.!

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