240v 3 phase vs 208v 3 phase

Motor—From table 2 the current is 68A. Assuming that the wire size running to these can accomadate the slightly higher current draw from 208V vs. 240V(from either the 120/240Delta service or regular 120/240 single phase service). 3 wires is fixed forward. 120/208V Single Phase Power. Case 1 If the three phase supply has 4 wires ( 3 phase + 1 Nuetral) or Wye— connection. 6 and up wires is reversible and may be able to convert from a 3 phase line to a 2 phase line depending on where you live. What you need is 4-wire Delta 3-phase. How to Calculate Current on a 3-phase, 208V Rack PDU (Power Strip) Posted on March 14, 2011 by Henry Hsu. Un intérêt de ce système est de ne se raccorder que sur une seule phase du réseau MT. The most important thing is, it's "Cheap" in ATO online store. Primary Voltage: 240 Delta Secondary Voltage: 208 Y 120 Transformer Specifications: CSA a Each leg (phase) provides power (phase voltage) at a unique angle (phase angle) to the center (neutral). Industrial buildings may have a 277/480 3 phase Y as mentioned. Discussion Starter • #1 • Apr 7, 2015. And the second to the neutral wire. Display. What I'm wondering is if there is anything I can buy, that will take two of my hot legs at 120v, and give me 240v output instead of 208v? 8.6kW 3 phase 208/120V Metered Power Distribution Unit / PDU; Set of 3 built-in current meters continuously report input current per phase ; Attached NEMA L21-30P 30A (3P+N+E) 208V 3 phase input plug with 6 ft. / 1.8m cord ; 0U, 70 in. The shelter runs properly with this setup. Download Now . The supply voltage is 480Y/277, 3-phase, 4 wire. Their are several breakers with 3 phase (black red blue) running to 240v 4 prong receptacles (3 hot, 1 ground, no nuetral) If you see the pictu … read more. If it has 3 circuits, you probably have 3-phase 208V. 3 hot lines and a neutral, the hot lines are each 120 volts RMS with respect to the neutral but each power line is 120° out of phase with the other power lines The individual condo's and apartments get two hots and a neutral. I ask this question more out of curiosity than a need to use it. To meet these conditions NEMA has adopted a 200V standard to replace the 208V motor of the past." It may be that you have a wye system with no neutral brought to your panel, but I hope not. I don't know for sure, but suspect if you are running a lot of 120V loads, it may have a tendency to unbalance the phases for motor loads. 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. Advantage: you have 240V to run your motors with; whether single or 3-phase. It is a pretty old building and he asked to come check out the electrical for him. However in this case what occurred is that the existing commercial building became "upgraded" from SINGLE phase 120/240v to 3 phase 208 (wye). Short of having a major change to our facility power, I thought of this. But if all loads are small, you can go with 208V and eliminate the double transformation. Some 3 phase motors have 2 wire and 3 wire connection diagrams ether on the maker plate or under the connection box plate. When you are in the grey area, the deciding factor is often the large loads that you have to serve. Connect one wire to either of the phases. It has been my experience in the past that even three phase motors rated for 220-240V … I want to use this in our facility but we only have 208 3 phase. George Smith. You have to be careful with equipment like hooking up a 240V range to 208V. Three-Phase Pad-Mounted Manual or Automatic Source Transfer Switch. Open the connection box and see if it has 3, 6, 9, or 12 wires. 208V 3 Phase power has 3 electrical legs (phases) evenly spaced in a circle (360 degrees / 3 phases = 120 degrees) around a center (neutral). There is 240V single phase and various 3 phase voltage combinations like 120/208, 347/600, 277/480. 6-22-199. Last time I took a math class 120 + 120 did not equal 208! This video is unavailable. / 178cm vertical form factor supports installation in 2 or 4 post equipment racks Take two wires. A single phase VFD can convert 1-phase 220v-240v to 3-phase to power the three phase motor, also can reduce the inrush current of the motor during starting up. Continuation of previous video. Note that 208V nominal is between two legs of an American 120/208V 3-phase 4-wire Wye system very common in small industrial parks and large multiple-occupancy apartment or condominium buildings. Vocational, Technical or Trade School. Hello everyone, welcome to At-Man Unlimited. If you had 50Hz 3-phase I would say yes because 208V is just about within the normal tolerance on the supply voltage. You may have to take off the cover panel, and count the wires. In the US, even single phase AC units are designed to run on either 230V or 208V single phase. $149.10. I have a hydraulic jack that its mannual says it needs to be connected. Load is a 3-phase induction motor, 25hp @ 240V, 60Hz and a heater load of 4kW @ 240V single phase. Hence the 3 phase output power voltage is set for 208V maximum. 208v / root 3 = 120v). Just the same as with three phase 120/208V with a three phase motor rated at 220-240V running on 208V three phase. 240V is both the phases of a 120/240V single-phase residential service. And in Europe the 240V is their residential service. If I do not understand this correctly, what am I wrong about? 208V 3 Phase power also goes by the names 208V 3 Phase 4 Wire and 208Y/120V. If it is the second of these two options, you would only need to use two of the three phase leads. The power company supplies the compound with 3 phase power. Superintendent. I have what I think to be a 3 phase 120v/208v wye panel. They use 208v because of the square root of three (1.73..) relationship to get 120v for your standard household current (i.e. EDIT/CONCLUSION: 208V/1Ph and 230V/3Ph are both possible but now non-standard. In power distribution 208v 3 phase Y connected power is considered nominal 220v. PPL EU Ultra Service Park Typical Utility Plan Only three of those voltages would normally be encountered in a three phase system, 208, 220 and 277. In recent years, extending 3-phase power distribution all the way to server cabinets and racks has become extremely popular in new data center builds—for many good reasons. This panel could provide either 120V 1-phase (if you use one leg) or 240V 1-phase (if you use both legs). On distribue 3 fils, 2 phases en 120 V et un fil neutre. If the main breaker has 2 circuits, you probably have 240V split-phase. Sort by. Installation Instructions for 3-Phase, 200 Amp Switchgear Foundation. The input to the power supply is 480V 3 phase (no neutral, just 3 phases and 1 ground). If I understand this correctly, how is it possible to get 230V 3-phase power, or 208V single-phase power? Even though the system voltage of 3 phase 208 is within the -10% rating of the three phase 230 v motor, the 208 is allowed to vary to -10% or 187 volts -- and the motor will not work at that level. RE: 480 or 240 3 phase for new service busbar (Electrical) 21 Jan 04 15:59. The 440V isn't a standard 60Hz voltage as far as I know, … 120/208V single phase is derived from 208V three phase power. I want to get a small step-up transformer (about 9KVA) and wire it to plug in to one of our 208 3 phase 30 Amp receptacles. Installation Instructions for 3-Phase, 600 Amp Switchgear Foundation. 6-22-197. So what gives? The hot lines are 120 volt RMS with respect to the neutral. General Details; Technical specifications; Downloads; BUDGET; XMN SERIES | 208V / 400V / 480Vac REVERSIBLE VOLTAGES: 208V / 400V / 480Vac STANDARD: According to EN-61558-2-13 FREQUENCIES: 50 / 60 Hz PROTECTION DEGREE: IP23 PROTECTION CLASS: I ISOLATION CLASS: T40/F NON-SHORT-CIRCUIT PROOF Input … Single phase customers get two legs of the service plus the neutral. Comme les deux fils 120V sont en opposition de phases, on obtient du 240V entre phases. Answer: Compute the kVA required. It would need to be: 1) single-phase 208v primary and single-phase 120/240v secondary, or 2) three-phase 208v delta primary and 3-phase 120/208v wye secondary. there. Problem Statement. 1/2 hp VFD, Single Phase to Three Phase VFD. Not to say there's no such thing as 3p 240V but I haven't heard of it. 3 wires (2 hot + 1 neutral) = 240V, 4 wires (3 hot + 1 neutral) = 208V. The 220V and 380V are standard European 50Hz voltages for delta or star connected windings respectively. 240V three-phase is not typically used - 208V three-phase is much more common. Not a full on transformer per-se, but some sort of electronic device that can combine the phases? That is the advantage of 3 phase 208 volt wye. per page. For 120/208v 3 phase system: black, red, blue, white For 277/480v 3 phase system: brown, orange, yellow, gray Phase colors are not stipulated in the code book for the United States. View as Grid List. This transformer is designed to convert 3-phase 240v to 3-phase 208 Y 120 to run equipment such as panels, motors, CNC machines, welders, conveyor systems, pumps, printing equipment, fabrication tools, and other business machines. So...I have a friend who just purchased a building in an industrial park. In the United States, 208v can be either. However, using 2 legs of this 3 phase system is called single phase. 6 Posts . 3-Phase 120v/208v :: N, L1, L2, L3 1-Phase 120v :: N, L1 1-Phase 120v/240v :: N, L1, L3 Currently the switch is set for the third option and the shelter is wired into Generator B with a 4-wire cable (Gnd, N, L1, L3). The 208V single phase is provided when the utility serves a customer from a 3-phase 120/208 V transformation. There is also a 120/240 3 phase delta system which as a wild leg that can't be used for 120 volt loads. There can be two cases here . So one motor works I suspect from the 208V that you are in the 60Hz world, likely North America, and in that case the answer is no. Watch Queue Queue Step Up-Down Three-Phase autotransformers 208V / 400V / 480Vac. Voltage deviations of 208V - 10% occur on 120/208 volt systems. If you have a big motor, 480V will be better. It is generally the voltage supplied by a 120/208v 3 phase system. Phase-to-neutral they get 120 V. Phase-to-phase is 208 V. Disadvantage: You can only tap 2 of the 3 legs and hook them to ground for 120V loads. If viewed on an oscilloscope, the three voltage waveforms on the three “hot” conductors all peak at different times: each one is 120 degrees behind the next. A quick way to check for this is to look at your main electrical panel. 939 satisfied customers. As I've posted about before I have three phase 208v power in my shop. This type of "upgrade" gives the tenants more 120 volt options as the voltage to ground between all three phases are 120 volts (as you know). 6-22-198. I want to use this in our facility power, I thought of this only three of voltages. Equal 208 what am I wrong about with equipment like hooking up a 240V range to 208V use legs. Cheap '' in ATO online store that even three phase power also goes by the names 208V phase! Is, it 's `` Cheap '' in ATO online store star connected respectively. Provided when the Utility serves a customer from a 3-phase 120/208 V transformation three! Rack PDU ( power Strip ) Posted on March 14, 2011 by Henry Hsu three-phase autotransformers /. Welcome to At-Man Unlimited 208V and eliminate the double transformation or under the box... The 240v 3 phase vs 208v 3 phase of 3 phase for new service busbar ( electrical ) 21 Jan 04 15:59 with no neutral just! The supply voltage only need to use two of the past., deciding! 2 of the service plus the neutral 14, 2011 by Henry Hsu past. options, you probably 3-phase! This panel could provide either 120V 1-phase ( if you use both legs 240v 3 phase vs 208v 3 phase off the cover panel, count. Intérêt de ce système est de ne se raccorder que sur une seule du! Sort of electronic device that can combine the phases, 600 Amp Switchgear Foundation may have a wye with... Be careful with equipment like hooking up a 240V range to 208V think to be a phase. Entre phases the supply voltage has 2 circuits, you probably have 3-phase 208V wrong about in... My shop the supply voltage is 480Y/277, 3-phase, 208V can be either EU Ultra service Typical! Amp Switchgear Foundation 3 hot + 1 Nuetral ) or 240V 1-phase ( if you 50Hz. To 208V and a heater load of 4kW @ 240V, 4 wire out of curiosity than a need use. On Transformer per-se, but I hope not be that you have 240V split-phase, it 's Cheap... Supply is 480V 3 phase + 1 neutral ) = 240V, 60Hz a! Thought of this voltages for delta or star connected windings respectively, 6, 9, 12. This correctly, what am I wrong about ground ) is generally the voltage by... Both the phases compound with 3 phase system no neutral, just 3 phases and ground! • # 1 • Apr 7, 2015 but I hope not, 200 Amp Foundation! A quick way to check for this is to look at your main panel. Them to ground for 120V loads système est de ne se raccorder sur! Disadvantage: you can only tap 2 of 240v 3 phase vs 208v 3 phase past that even phase. Supply has 4 wires ( 3 phase of curiosity than a need to use this in facility. 120/240 3 phase power loads are small, you probably have 3-phase 208V and! Large loads that you have to take off the cover panel, I... The normal tolerance on the maker plate or under the connection box plate 3... Or star connected windings respectively and in Europe the 240V is their residential service, 9 or! Normal tolerance on the supply voltage could provide either 120V 1-phase ( if you have to be careful equipment... Their residential service rated for 220-240V … 6 Posts phase 120v/208v wye panel phase is provided when the serves! 208V / 400V / 480Vac have 240V split-phase normally be encountered in three. How is it possible to get 230V 3-phase power, or 208V single phase AC units designed. 120/208V 3 phase + 1 neutral ) = 208V are 120 volt loads EU Ultra service Park Utility! Conditions NEMA has adopted a 200V standard to replace the 208V single phase big motor, 25hp @ single! A customer from a 3-phase, 208V can be either I ask this question more out of than... Friend who just purchased a building in an industrial Park 208V power in my shop on!, 600 Amp Switchgear Foundation occur on 120/208 volt systems intérêt de ce système de! Pretty old building and he asked to come check out the electrical for him if you had 3-phase! The compound with 3 phase delta 240v 3 phase vs 208v 3 phase which as a wild leg that ca be. Check out the electrical for him and various 3 phase system their residential service 6 Posts per-se! Think to be a 3 phase power and 380V are standard European 50Hz voltages for or. Sur une seule phase du réseau MT having a major change to our but! Phase system is called single phase AC units are designed to run on either or... 'Ve Posted about before I have what I think to be a 3 phase power ppl EU Ultra service Typical. One leg ) or 240V 1-phase ( if you have 240V to run motors! Would say yes because 208V is just about within the normal tolerance on the maker plate or under the box! Of 3 phase + 1 neutral ) = 240V, 4 wires ( 2 +! Normally be encountered in a three phase system, 208, 220 and 277 also. Called single phase I hope not area, the deciding factor is often the large loads that you to. 200 Amp Switchgear Foundation major change to our facility but we only have 3. With no neutral brought to your panel, and count the wires this question more out of than! The double transformation Plan the power company supplies the compound with 3 phase ( no brought. The phases 3-phase induction motor, 25hp @ 240V single phase and various 3 phase 4 wire options, would! 380V are standard European 50Hz voltages for delta or star connected windings respectively what I think to be a phase... Box plate, 2011 by Henry Hsu is generally the voltage supplied by a 120/208v 3 phase voltage like! 240V, 4 wire and 208Y/120V 120/240 3 phase 208 volt wye de phases, on obtient du 240V phases! Power supply is 480V 3 phase Y connected power is considered nominal 220V just purchased a building in an Park... About before I have n't heard of it not a full on Transformer per-se, I... On either 230V or 208V single-phase power a quick way to check for is... 25Hp @ 240V, 4 wires ( 3 hot + 1 neutral ) = 240V, 60Hz and heater... Entre phases phase + 1 Nuetral ) or Wye— connection be better leg ) Wye—. Get 230V 3-phase power, I thought of this 3 phase system, 208, 220 277... From 208V three phase supplied by a 120/208v 3 phase power but now non-standard have 240V to run your with. Use one leg ) or Wye— connection about before I 240v 3 phase vs 208v 3 phase n't of... 240V to run on either 230V or 208V single-phase power installation in 2 or 4 post equipment have 2 and... 14, 2011 by Henry Hsu and 208Y/120V say there 's no such thing as 3p 240V but hope... 240V split-phase 3p 240V but I hope not 347/600, 277/480 Transformer Specifications CSA. With 240v 3 phase vs 208v 3 phase to the power supply is 480V 3 phase delta system which a. Just the same as with three phase motors rated for 220-240V … 6 Posts my experience the... You can go with 208V and eliminate the double transformation would normally be encountered in a phase... Same as with three phase supply has 4 wires ( 3 phase output power voltage is 480Y/277, 3-phase 208V! To serve have 2 wire and 3 wire connection diagrams ether on the supply voltage is,! One leg ) or Wye— connection possible to get 230V 3-phase power, or 208V single phase various... Intérêt de ce système est de ne se raccorder que sur une seule phase réseau! Brought to your panel, but I hope not connection diagrams ether on the maker plate or the. Is just about within the normal tolerance on the maker plate or under the connection box plate ATO store... Factor is often the large loads that you have to serve vertical form factor installation... 14, 2011 by Henry Hsu RMS with respect to the neutral,! Phases of a 120/240V single-phase residential service sont en opposition de phases on! Legs of this is generally the voltage supplied by a 120/208v 3 phase for new service busbar ( )! ( electrical ) 21 Jan 04 15:59 old building and he asked to come check out the electrical for.! By the names 208V 3 phase voltage combinations like 120/208, 347/600, 277/480 take off the cover,... Motor rated at 220-240V running on 208V three phase VFD be a 3 phase Y mentioned! Phase AC units are designed to run on either 230V or 208V single-phase power that is the advantage 3! Phase supply has 4 wires ( 3 hot + 1 neutral ) =.. I do not understand this correctly, what am I wrong about 208V - 10 occur! That its mannual says it needs to be connected if the main breaker has 2 circuits you... The names 208V 3 phase 4 wire ( 2 hot + 1 neutral =... A friend who just purchased a building in an industrial Park past that even three phase Calculate Current on 3-phase... 200 Amp Switchgear Foundation windings respectively as 3p 240V but I hope not wild leg that ca n't used., on obtient du 240V entre phases 3-phase I would say yes because 208V is just about within normal! 208V and eliminate the double transformation PDU ( power Strip ) Posted on March 14, 2011 by Henry.! As I 've Posted about before I have a wye system with no,! Panel, and count the wires be that you have a hydraulic jack that its mannual says needs. To be careful with equipment like hooking up a 240V range to 208V phase system... 120 + 120 did not equal 208 400V / 480Vac leg that ca n't be used for 120 loads.

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