Table of mains voltages, frequencies, and plugs
| Country or territory | Plug type | Residential voltage | Three-phase voltage (L–L) | Frequency |
| Afghanistan | C, F | 220 V | 380 V | 50 Hz |
| Albania | C, F | 230 V | 400 V | 50 Hz |
| Algeria | C, F | 230 V | 400 V | 50 Hz |
| American Samoa | A, B, F, I | 120 V | 208 V | 60 Hz |
| Country | Three-phase voltage (Volts) | Frequency (Hertz) |
|---|---|---|
| USA | 120/208V // 277/480V // 120/240V // 240/415V //277V/ 480 V | 60 Hz |
| Abu Dhabi | 400 V | 50 Hz |
| Afghanistan | 380 V | 50 Hz |
| Albania | 400 V | 50 Hz |
What are the voltages in a three phase system?
23/09/2003 · MarkusPort, 3 phase + ground (Y) is the most common in industrial sites. Delta is rare but may exist in much older installations. Most common is Phase to phase nominal of 480 VAC, ground to phase 277 VAC. For smaller systems, Phase to phase 208 VAC, ground to phase 120 VAC. For larger systems, Phase to phase 4160 VAC, ground to phase 2400 VAC.
What is 480V 3 phase power?
480V 3 Phase is the most common power system used in US industrial plants. American National Standards Institute (ANSI) classifies 208V, 240V and 480V 3 Phase power as low voltage power systems. Other ANSI voltage classifications are Medium, High, Extra High, and Ultra High Voltage that goes up to 1,100,000V.
What is 3 phase power used for?
29/12/2015 · There are some industeries in the US that use 600 volts at transformer and 575 volt motors. The above covers most 3 phase usage in the US. There has been voltage creep over the years - in the 1930s and 40s (maybe even 50s)the transformers were rated 460 (or 230 volts) and the motors were rated 440 and 220 volts.
What is the typical 3 phase + ground to phase system?
Do US homes have 3 phase power?
Residential homes are usually served by a single-phase power supply, while commercial and industrial facilities usually use a three-phase supply.
Does the US have three-phase?
In North America, three phase power is only available in commercial/industrial buildings because of the high voltage. ... Whereas single phase is found in both residential and commercial.23-Feb-2017
Is 240V 3 phase common?
In the US 120 / 240V 1 Phase 3 Wire is the standard for homes and 240V 3 Phase Open Delta is the standard for small buildings with large loads. In parts of the world 240V Single Phase 2 Wire is the standard for homes.26-Jun-2016
What voltages are available in the US?
Today, virtually all American homes and businesses have access to 120 and 240 V at 60 Hz. Both voltages are available on the three wires (two "hot" legs of opposite phase and one "neutral" leg).
Is 208 volts single or three-phase?
Now to get back to our question. 208 volts is Line-to-Line Voltage. This three Phase voltage is frequently used in small businesses.07-Aug-2017
Can you wire single-phase into 3 phase?
Although single-phase power can be derived from a three-phase power source, a transformer cannot convert single-phase power to three-phase power. Converting single-phase power to three-phase power requires either a phase converter or a variable frequency drive.
How does a house get 240 volts?
The way you get a 240-volt circuit is simple. A “double-pole” circuit breaker is clipped into both 120 buses at the same time, so the voltage to the circuit is doubled. That's why 240-volt circuits need two hot wires and a neutral to carry the electricity to the appliance, plus a ground wire.
What is the high leg voltage of a 120 240 volt 3 phase system?
Voltage between A, B or C is three phase 240; voltage between neutral and A or C is single phase 120. That B-neutral “high -leg” or “stinger leg” is 208 volts, and must be marked distinctly, typically with orange, according to electrical codes.
What are the benefits of 480V?
480V 3 Phase US industrial power 1 Reduced construction costs with smaller electrical service, wiring, conduits, and electrical devices. 2 Reduced energy costs with less energy lost to heat in the form or current resistance.
Why use 480V 3 phase?
Most US industrial facilities use 480V 3 Phase instead of 208V or 240V because it provides 2.3 (480 /208) times or 2.0 (480 /240) times more power with the same current. More important is it provides the same power with less current which provides added benefits.
What is phase to neutral voltage?
Phase to neutral voltage is 277V or below 300V. It can power 277V single phase lighting loads. A 480 3 Phase Wye power system is called 480V 3 Phase 4 Wire and 480Y/277V. These are technically more accurate because they refer to the neutral. The “4 Wire” in 480V 3 Phase 4 Wire refers to the neutral as 4th wire.
Is 480V a Delta?
Most 480V power systems are not a Delta configuration because the phase to ground voltage is 480V or above 300V. I’m always surprised when an industrial facility uses a 480 3 Phase Delta power system. Most of the time they are older industrial facilities so it must be related to when the facility was built.
Where is 575 volts?
575 volt is seen is some areas in the Northeast and Southeast, primarily Georgia. The primiary industries that required this was textile factories. Standard voltage for the US is 208-230/460. You will of course see request for 440 or 480 volt.
What is the voltage of a transformer?
Here in the US, the transformer is normally rated higher than the motor (or load) to allow for voltage drops. The transformer secondary is usually 480 (or 240 or 208) and the motors are rated 460, 230 or 200 volts. 480 and 460 are considered the same. There are some industeries in the US that use 600 volts at transformer and 575 volt motors.
How many volts does a transformer use?
There are some industeries in the US that use 600 volts at transformer and 575 volt motors. The above covers most 3 phase usage in the US. There has been voltage creep over the years - in the 1930s and 40s (maybe even 50s)the transformers were rated 460 (or 230 volts) and the motors were rated 440 and 220 volts.
Is 440 the same as 480?
440 is the same as 460 or 480 in the same way as 110 is the same as 125. 220 is different from 208 however. The voltage should not "creep" on a. particular machine. There is no such thing as a natural-born pilot.
Is 600VAC more common in Canada than 575?
Actually, 600VAC is much more common in Canada than 575. I believe that 575 is gradually disappearing in favour of 600. If you are planning on designing something for use in. Canada, you would be better to use 600VAC.