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 |
What is the proper electrical voltage?
267 rows · Jan 24, 2022 · United States of America (USA) A / B: 120 V: 60 Hz: United States Virgin Islands: A / B: 110 ...
Is 115v and 120V the same?
May 26, 2020 · In the United States of America the standard voltage is 120 V and the frequency is 60 Hz. You can use your electric appliances in the United States of America, if the standard voltage in your country is in between 110 - 127 V (as is in the US, Canada and most South American countries).
What is the standard voltage in a home electrical outlet?
Mar 26, 2020 · The standard voltage of a home electrical outlet in the United States is 120 volts, although the actual voltage supplied may be as low as 110 volts, due to line conditions. A few appliances, like stoves and electric dryers, may use 240 volts, which require special wiring and outlets. The actual voltage supplied to a home from the electric utility is 240 volts, split across …
What are the 3 phase voltages in the USA?
Residential voltage in the USA and Canada is 120 / 240 volts AC.
Is US voltage 110 or 220?
Typically, either 110-volt AC (110V) or 220-volt AC (220V) is used. Most countries use 50Hz (50 Hertz or 50 cycles per second) as their AC frequency. Only a handful use 60Hz. The standard in the United States is 120V and 60Hz AC electricity.13-Feb-2016
Is US voltage 220 or 240?
North American Voltage Ranges In the United States and Canada, the electrical power supplied to most homes is a split-phase system. That power enters your home at about 240 volts. This 240 volts is split at the main circuit breaker panel into two 120 volt halves, called phases.
Is US electricity 110 or 120?
The most common electrical outlet in any home is a 110 volt. Sometimes you may hear 110 volt plugs referred to as 120 volt. Do not be confused by this; think of them as one and the same.29-Aug-2016
Is America 115V or 230V?
see less Most products sold for the worldwide market support standard American electrical power (115V 60Hz) and European electrical power (230V 50Hz). The rest of the world uses one or the other with various different receptacle styles but one or the other voltage/frequency with very few exceptions.
What is the difference between 208 and 240?
2:216:25How is 208 volts different than 230/240 volts? - YouTubeYouTubeStart of suggested clipEnd of suggested clip208 really isn't single phase 208 is actually two phases we're taking two phases out of three. SoMore208 really isn't single phase 208 is actually two phases we're taking two phases out of three. So you have a building that has three phases of power coming into the panel.
What Does It Mean 120 240?
You will need to have a 30 amp/240 volt line installed. 120/240 refers to the common voltage into a typical home. There are two lines that are 120 volts each supplying power to two different legs in your breaker/fuse panel.13-Jun-2005
Why does America use 120V?
The choice of 120V was to compensate for IR drop. The reason for 220-240 was that with AC distribution, this became a convenient voltage level to deliver to homes. And the reason why Europe dropped the 120V domestic distribution was simply economics. You can save on copper.04-May-2014
Will a 120 volt work in a 110 outlet?
If used with lower voltages, the 120 and 240 motors will not be affected. There will be no problems with the 120 volt motor. It's the same for a motor running on 120 volts.
Why does the US use 110V?
110 volts was much more economic when electricity became widely available, and the voltage kind of stuck. At the time of the first widely available electric grid, it was mainly used to light houses, which used bulbs that worked best between 100 and 110 volts.29-Aug-2016
How do I know if I have 115V or 230V?
The voltage reading should be within 10% of the voltage. For example, if the voltmeter reads between 207 and 253 volts, then you know you have a 230V motor.24-Apr-2019
Can I use 115V in 110V?
There is no real difference between 110V and 115V circuits. Outlets in your home are standardized to 120V, but due to a number of factors like line length and distance from the grid, you may only get 110V to 115V. In practice, this makes no real difference in how you can use the outlet.
Which is better 115V or 230V?
A 115-volt air conditioner is more convenient than a 230-volt model because the 115-volt unit can plug into virtually any wall outlet. You can move it from room to room without any special wiring or outlet that a 230-volt unit needs.
What is the standard voltage of a home electrical outlet?
What Is the Standard Voltage in a Home Electrical Outlet? The standard voltage of a home electrical outlet in the United States is 120 volts, although the actual voltage supplied may be as low as 110 volts, due to line conditions.
What type of voltage do you use for a stove?
A few appliances, like stoves and electric dryers, may use 240 volts, which require special wiring and outlets. The actual voltage supplied to a home from the electric utility is 240 volts, split across two "legs.". Most outlets are wired to one leg and a neutral leg.
How many volts does a dryer need?
Residential electric ranges, electric dryers and central air conditioners usually need 240 volts to operate. 240 volts is achieved when combining two sources of 120 volts of different phases (A and B phases). B phase current flows in the opposite direction as A phase. When A phase voltage peaks at +170 volts, B phase is at -170 volts.
What is the potential difference between A and B phase?
The potential difference of two 120 volts lines at the same phase is 0 volts. A and B phase voltage is needed to supply 240 volts to a load.
What is the voltage of a Wye connected system?
Wye connected systems have a neutral. Delta connected systems typically do not have a neutral. Voltage classes: (ANSI C84.1-2016) Low Voltage: 1000 volts or less. Medium Voltage: greater than 1000 volts and less than 100 kV. High Voltage: greater than 100 kV and equal to or less than 230 kV.
What voltage is used for a 3 phase motor?
Nominal service voltages of 240, 400, 480, 600, and higher are typical.
What is a neutral line?
Also known as an Edison system, split-phase or center-tapped neutral. This is the most common residential service in North America. Line 1 to neutral and Line 2 to neutral are used to power 120 volt lighting and plug loads. Line 1 to Line 2 is used to power 240 volt single phase loads such as a water heater, electric range, or air conditioner.
What is a wild leg delta?
Also known as a high-leg or wild-leg delta system. Used in older manufacturing facilities with mostly three-phase motor loads and some 120 volt single-phase lighting and plug loads. Similar to the Three Phase Three Wire Delta discussed above but with a center-tap on one of the transformer winding to create neutral for 120 volt single-phase loads. Motors are connected to phase A, B, and C, while single-phase loads are connected to either phase A or C and to neutral. Phase B, the high or wild leg, is not used as the voltage to neutral is 208 volt.
What phase is a motor connected to?
Motors are connected to phase A, B, and C, while single-phase loads are connected to either phase A or C and to neutral. Phase B, the high or wild leg, is not used as the voltage to neutral is 208 volt.
What does the coil symbol mean?
In the following drawings, the coil symbols represent the secondary winding of a utility service transformer or other step down transformer. Electrical code regulations in most jurisdictions require that the neutral conductor be bonded (connected) to the earth safety ground at the electrical service entrance.
Is the 3Y 600 used in Canada?
Do 3Y-600 and 3D-600 appear in the US or only in Canada?#N#Yes, wye and delta 600 volt services are used in both countries but in the US they are less common.
What is the standard voltage in the US?
In the United States of America the standard voltage is 120 V and the frequency is 60 Hz. You can use your electric appliances in the United States of America, if the standard voltage in your country is in between 110 - 127 V (as is in the US, Canada and most South American countries).
What is the standard voltage of a power socket?
Electricity in the United States of America. In the United States of America the power plugs and sockets are of type A and B. The standard voltage is 120 V and the standard frequency is 60 Hz.
Can you bring appliances from Japan?
Be careful if you bring appliances from Japan (100 V). If the standard voltage in your country is in the range of 220 - 240 V (as is in the UK, Europe, Asia, Africa and Australia), you need a voltage converter in the United States of America. Some say you can carefully try to use your appliances in the United States of America without a converter.
What voltage is used in the US?
240V is used in the US for some appliances like electric clothes dryers and cooktops. “The rest of the world” does not use 220V, though many countries do. There is a wide variety of voltages used in the world: 100, 110, 115, 120, 127, 220, 230, 240.
What is a neutral volt?
The Neutral and 120 volts are used for standard indoor wall outlets for plug-in consumer goods, and lights. High power appliances such as air conditioners, water heaters, clothes dryers, and garage tools such as air compressors or these days electric cars, all connect to both 120V outputs which gives you 240V.
How many volts are in a 120V transformer?
The voltage between the two 120V legs is 240V. The 7,000 volts allows for efficient transportation of large amounts of electricity over many miles of wires. Most houses have 240V 200A electric service. If you need more, you can just upgrade your transformer.
What was Edison's 110V system?
As Eric Truebenbach already explained, Edison adopted 110V for his original household DC system , and then when Westinghouse won the War of Currents and AC became the preferred technology, the 110V specification was maintained out of expediency.
Why do countries use 120?
And it’s because we (the Americas) are separated by oceans from the rest of the world, and there’s no particular reason we should have developed or adapted to the standards of the rest of the world. 334 views.
Does the USA have 220 volts?
But the USA does have a 220 volt standard, but the devices hooked that are not major appliances, are mostly 120 volt. Dryers are still 220V. Woodworking machines many are 220 Volt. The rest of the world does not have 220 volts as standard, so that is misleading. Much of the world does not even have electricity.
Who adopted 110V?
As Eric Truebenbach already explained, Edison adopted 110V for his original household DC system, and then when Westinghouse won the War ...
What is the Canadian electrical code?
The Canadian Electrical Code, while developed independently from the NFPA code, is similar in scope and intent to the US NEC, with only minor variations in technical requirement details ; harmonization of the CEC and NEC codes is intended to facilitate free trade between the two countries.
What voltage is XHHW?
Wires with XHHW insulation are commonly used in the alternating current (AC) electrical distribution systems of commercial, institutional, and industrial buildings and installations, usually at voltage levels ( potential difference or electromotive force) ranging from 110-600 volts.
What is the NEC?
The National Electrical Code (NEC) specifies minimum acceptable wiring methods and materials for many states and municipalities in the U.S. It is sponsored by the National Fire Protection Association (NFPA) and has been periodically revised since 1897. Local jurisdictions usually adopt the NEC or another published code and then distribute documents describing how local codes vary from the published codes. Governments cannot distribute the NEC itself for copyright reasons, though parts that have been adopted into law are not subject to copyright.
What is an outlet in electrical?
An outlet is defined by the NEC as "a point in the wiring system at which current is taken to utilization equipment". This definition includes receptacles, lighting, motors, etc. Ordinary switches control but do not consume electricity, and therefore are not defined as outlets in this sense.
What type of wire is used for grounding?
For grounding, regardless of the voltage, Green (or a bare wire) is used. Several other types of wiring systems are used for building wiring in the United States; these include corrugated metal armored cable, mineral-insulated cable, other types of power cable, and various types of electrical conduit.
What is neutral wire?
Neutral wire is the return conductor of a circuit; in building wiring systems, the neutral wire is connected to earth ground at only one point. North American standards state that the neutral is neither switched nor fused except in very narrowly defined circumstances.
What color terminals are required for a neutral conductor?
Terminals for the neutral (grounded) conductor in general, and for receptacles, plugs, and connectors specifically, are required to be substantially white in color [NEC 200.9, NEC 200.10 (B)], and if the terminal itself is not visible, the hole leading to it must be marked with the word "white" or the letter "W".