The 208V is in essence a single phase voltage when used as such. A forum community dedicated to professional electricians, contractors, and apprentices for residential and commercial work. 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. This can be confusing but the bottom line is they are referring to the exact same thing. If you want a simple understanding but aren’t electrically minded, start with a simple analogy you can build on. Flux is reduced to 208/240=200/230=86.7%. Copyright © 2020 vBulletin Solutions, Inc. All rights reserved. Therefore, if you put 120V in, you will get 120V out, 208V in gets you 208V out, 240V in gets you 240V out, etc. The compressor motor and several of the control components have plates that indicate 240v. All Rights reserved. -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. Sign up for our eNewsletter now to stay in-the-know. 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. Bicycle Analogy. Can a 240V-3ph panelbd (with a wild leg) be easily converted to 208V-3ph? 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. It WILL cause your oven, stove or dryer to reach selected temperature slower, and the thermostat will therefore cycle on for longer periods. To learn more, please refer to the cookie policy. 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. However, the fryer I found is 15amp, 60Hz, and 208v. There is also a grounding point next to the PDU power input. 200V motor running on 240V? In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. 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). plate on dryer does not specifi 208 volts.It says 240volt. 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. 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. Motors are rated for 10% over or under the nameplate voltage listed on the motor. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. If you want a simple understanding but aren’t electrically minded, start with a simple analogy you can build on. A quad tap ballast would be marked 120v, 208v, 240v, 277v and would have to be set up for the correct line voltage. A tandem bicycle has two people providing power with four legs (pedals). We have a residential home that for some reason is 3 phase, 110/208v. Came up today to a question,if a 240volt dryer can use 208volt to use.The spec. Powered by vBulletin® Version 4.2.5 If you need help sizing or connecting them, post back with the motor HP, and other loads. You could probably get away with just changing the control transformer. Register for the world’s largest manufacturing technology forum for free today to stay in the know. 120V is the AC voltage on a single hot … This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. I have an environmental cleanup system that was delivered to me second hand. I like the bicycle analogy. 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. About the Driver Shown in the Photo Above 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. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. It can be tempting to use a 208V/240V-only power distribution unit. Don"t worry about the 240V - 250V difference, that receptacle is fine for 240 volts. As stated above, a good part of the time, the motors are OK with either 208 or 240. The AC and other appliances are rated for 208/230. Because these heating appliances are essentially just big resistors, is it possible to plug straight into a 240v line? THE BAD – The “Wild Leg” or “High Leg” (Phase B) can cause problems if you’re not aware it’s different. 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. I like the bicycle analogy. This website or its third-party tools process personal data (e.g. 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. It is basically a large compressor and controls. 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. If heaters (Warren) are rated for 208V, why would a 240V system not work? Okie Go Balls Deep. Most modern devices can support this, but you must check the nameplate of each device to be powered. Secondary ( output ) side is fine for 240 support this, what do you pros say for power for. 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