Mains electricity by country

For broader coverage of this topic, see Mains electricity.

Mains electricity by country includes a list of countries and territories, with the plugs, voltages and frequencies they commonly use for providing electrical power to low voltage appliances, equipment, and lighting typically found in homes and offices. (For industrial machinery, see industrial and multiphase power plugs and sockets.) Some countries have more than one voltage available. For example, in North America, a unique split-phase system is used to supply to most premises that works by center tapping a 240 volt transformer. This system is able to concurrently provide 240 volts and 120 volts. Consequently, this allows homeowners to wire up both 240 V and 120 V circuits as they wish (as regulated by local building codes). Most sockets are connected to 120 V for the use of small appliances and electronic devices, while larger appliances such as dryers, electric ovens, ranges and EV chargers use dedicated 240 V sockets. Different sockets are mandated for different voltage or maximum current levels.

Frequency and voltage supplied to most premises by country

Voltage, frequency, and plug type vary, but large regions may use common standards. Physical compatibility of receptacles may not ensure compatibility of voltage, frequency, or connection to earth (ground), including plugs and cords. In some areas, older standards may still exist. Foreign enclaves, extraterritorial government installations, or buildings frequented by tourists may support plugs not otherwise used in a country, for the convenience of travellers.

Main reference source – IEC World Plugs

The International Electrotechnical Commission (IEC) publishes a web microsite World Plugs^[1] which provides the main source for this page, except where other sources are indicated. World Plugs includes some history, a description of plug types, and a list of countries giving the type(s) used and the mains voltage and frequency.

Although useful for quick reference, especially for travellers, IEC World Plugs may not be regarded as totally accurate, as illustrated by the examples in the plugs section below, and errors may exist.

Voltages

Voltages in this article are the nominal single-phase supply voltages, or split-phase supply voltages. Three-phase and industrial loads may have other voltages.

All voltages are root mean square (RMS) voltage; the peak AC voltage is greater by a factor of ${\displaystyle {\sqrt {2}}}$, and the peak-to-peak voltage greater by a factor of ${\displaystyle 2{\sqrt {2}}.}$

Plugs

Main article: AC power plugs and sockets

Types of power plugs and sockets used by country for portable appliances
  A •   B, A •   C •   D, M •   E, C •   F, C •   G •   H, C •   I •   J, C •   K, C •   L, C •   N, C

The system of plug types using a single letter (from A to O) used here is from World Plugs, which defines the plug type letters in terms of a general description, without making reference to specific standards. Where a plug does not have a specific letter code assigned to it, then it may be defined by the style sheet number listed in IEC TR 60083.^[2]

Identification guide

• 
  Type A (NEMA 1–15, US 2 pin); max 15 A at 125 V, ungrounded
• 
  Type B (NEMA 5–15, US 3 pin); max 15 A at 125 V
• 
  Type C (CEE 7/16, Europlug); max 2.5 A, ungrounded
• 
  CEE 7/17 2-pin plug; max 16 A, ungrounded
• 
  Type D (BS 546 5 A); max 5/6 A
• 
  Type E (French) – CEE 7/6 plug & CEE 7/5 socket; max 16 A
• 
  Type F ("Schuko") – CEE 7/4 plug & CEE 7/3 socket; max 16 A
• 
  CEE 7/7 plug (combines earthing methods of Types E and F); max 16 A
• 
  Type G (BS 1363 UK); max 13 A
• 
  Type H (SI 32 Israel); max 16 A
• 
  Type I (AS/NZS 3112, GB/T 1002, IRAM 2073 and 2071); Argentinian version has reversed polarity compared to Chinese and Australasian versions; max 10–20 A
• 
  Type J (SN 441011, Switzerland); max 10 A; a variant rated for 16 A has rectangular pins
• 
  Type K (SRAF 1962/DB Denmark); max 16 A
• 
  Type L (CEI 23-50); max 10–16 A
• 
  Type M (15 A BS 546); max 15/16 A
• 
  Type N (IEC 60906-1; Brazil, Paraguay, South Africa); max 10–20 A
• 
  Type O (Thai TIS 166-2549 mains plug);^[3] max 16 A
• 
  So-called "universal socket" which meets no standard^[4] but accepts a number of different plug types (criticized as non-compliant and unsafe)^[5][6]

Table of mains voltages, frequencies, and plugs

Country or territory	Plug type[a]	National plug standard[2]	Voltage		Fre­quen­cy[7]	Notes
			Resi­dential[7]	Three-phase[8]
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 I	NEMA 1-15 NEMA 5-15 AS/NZS 3112	120 V	208 V	60 Hz	Type I is used due to close proximity with independent western neighbour Samoa.
Andorra	C, F		230 V	400 V	50 Hz
Angola	C, F		220 V	380 V	50 Hz
Anguilla	A, B		110 V	120/208 V 127/220 V 240/415 V	60 Hz
Antigua and Barbuda	A, B		230 V	400 V	60 Hz
Argentina	C, I	IRAM 2073	220 V[9]	380 V	50 Hz	Live and neutral reversed compared to Chinese and Australian/NZ type I.
Armenia	C, F		230 V	400 V	50 Hz
Aruba	A, B, F		127 V	220 V	60 Hz
Australia	I	AS/NZS 3112	230 V	400 V	50 Hz
Austria	C F	ÖVE-IG/EN 50075 ÖVE/ÖNORM E 8620	230 V	400 V	50 Hz
Azerbaijan	C, F		220 V	380 V	50 Hz
Bahamas	A, B		120 V	208 V	60 Hz
Bahrain	G		230 V	400 V	50 Hz
Bangladesh	A, C, D, G[10]		220 V	380 V	50 Hz
Barbados	A, B		115 V	200 V	50 Hz
Belarus	C, F		230 V[11]	400 V	50 Hz
Belgium	C, E	NBN C 61 112-1	230 V	400 V	50 Hz
Belize	A, B, G		110 V 220 V	190 V 380 V	60 Hz
Benin	C, E		220 V	380 V	50 Hz
Bermuda	A, B		120 V	208 V	60 Hz
Bhutan	C, D, F, G, M		230 V	400 V	50 Hz
Bolivia	A, B, C		115 V 230 V	400 V	50 Hz
Bonaire,[12][13][14][15]  Sint Eustatius and  Saba	A, B		127 V	220 V	50 Hz	Sockets for 220-240 V European type C plugs are typically available at hotels; some buildings modify voltage, so travellers are advised to check before plugging in. Type F are also available at some hotels.
Bosnia and Herzegovina	C, F		230 V	400 V	50 Hz
Botswana	D, G, M		230 V	400 V	50 Hz
Brazil	C, N	NBR 14136	127 V 220 V[16]	220 V 380 V	60 Hz[17]	Before standardization, socket types varied: C (very old installations), I (for air conditioners), and combinations like A/C and A/B/C.
British Virgin Islands	A, B		110 V	190 V	60 Hz
Brunei	G		240 V	415 V	50 Hz
Bulgaria	C, F		230 V	400 V	50 Hz
Burkina Faso	C, E		220 V	380 V	50 Hz
Burundi	C, E		220 V	380 V	50 Hz
Cambodia	A, C, G		230 V	400 V	50 Hz	Sockets for British type G plugs are mainly found at some hotels and never in households.
Cameroon	C, E		220 V	380 V	50 Hz
Canada	A B NEMA 14-30 NEMA 14-50	CSA C22.2 No. 42[18]	120 V[19] 240 V	120/208 V 240 V 277/480 V 347/600 V	60 Hz	NEMA 5-20R outlets, which are similar to type B but have a T-shaped neutral slot, are sometimes used for higher current 120 V equipment (up to 20 A). Homes are typically provided with 120/240 V split-phase power; NEMA 14-30R and 14-50R receptacles are provided on 240 V circuits for clothes dryers and electric stoves.[20]
Cape Verde	C, F		220 V	400 V	50 Hz
Cayman Islands	A, B		120 V	240 V	60 Hz
Central African Republic	C, E		220 V	380 V	50 Hz
Chad	C, D, E, F		220 V	380 V	50 Hz
Chile	C, F, L		220 V	380 V	50 Hz	Type L is the official national standard; Europlugs (type C) are compatible. Schuko (type F) plugs are often used for high power appliances.
China	A, I	GB/T 1002-2024	220 V	380 V	50 Hz	Type C no longer meets national standards since GB/T 1002-2021 came into effect; firms stopped producing, selling or installing Type C and A/C hybrid sockets, but A/C hybrid sockets can still be found in legacy installations.
Colombia	A, B		120 V[21]	120/208 V 277/480 V 120/240 V 240/208/120 V 240 V 480 V	60 Hz[22]	NEMA 5-20R outlets, which are similar to type B but have a T-shaped neutral slot, are sometimes used for higher current 120 V commercial equipments (up to 20 A). On the other hand, NEMA 10-50P outlets are sometimes used for 208 V and 240 V industrial equipments (up to 50 A).
Comoros	C, E		220 V	380 V	50 Hz
Congo, Republic of the	C, E		230 V	400 V	50 Hz
Congo, Democratic Republic of the [23]	C, E		220 V	380 V	50 Hz
Cook Islands	I	AS/NZS 3112	240 V	415 V	50 Hz
Costa Rica	A, B		120 V	208 V 240 V 480 V[24]	60 Hz
Côte d'Ivoire	C, E		230 V	400 V	50 Hz
Croatia	C, F		230 V	400 V	50 Hz
Cuba	A, B, C, L		110 V	190 V 220 V	60 Hz	Some modern hotels have 220 V sockets for European 2-pin plugs (Type C).[25]
Curaçao	A,[26] B, F[27]		127 V[26][28]	220 V 380 V	50 Hz[26]	Some hotels and apartments have 220 V European sockets.[29]
Cyprus	G		240 V	415 V	50 Hz
Czech Republic	C, E	ČSN 35 4516	230 V	400 V	50 Hz
Denmark	C E, F, K	DS/EN 50075 DS 60884-2-D1[30]	230 V	400 V	50 Hz	Type E and F sockets are legal but rare; type E, F and 7/7 plugs can be inserted into the widespread type K sockets, but no earth contact is established
Djibouti	C, E		220 V	380 V	50 Hz
Dominica	D, G		230 V	400 V	50 Hz
Dominican Republic	A, B, C		110 V	120/208 V 277/480 V	60 Hz
Ecuador	A, B		120 V	208 V 480 V	60 Hz
Egypt	C, F		220 V	380 V	50 Hz
El Salvador	A, B		115 V	208 V 220 V 440 V 480 V[31]	60 Hz
Equatorial Guinea	C, E		220 V	380 V	50 Hz
Eritrea	C, L		230 V	400 V	50 Hz
Estonia	C, F		230 V	400 V	50 Hz
Eswatini	M		230 V	400 V	50 Hz
Ethiopia	C, E, F, L		220 V	380 V	50 Hz	Type E is very rare because Ethiopia never had French influences.
Falkland Islands	G		240 V	415 V	50 Hz
Faroe Islands	C, E, F, K		230 V	400 V	50 Hz	Same as in Denmark.
Fiji	I	AS/NZS 3112	240 V	415 V	50 Hz	Same as in Australia.
Finland	C F	SFS-EN 50075 SFS 5610	230 V	400 V	50 Hz
France	C E	NF EN 50075 NF C 61-314	230 V	400 V	50 Hz
French Guiana	C, E		220 V	380 V	50 Hz
French Polynesia	A, B, C, E, F		110 V 220 V	380 V	60 Hz[32] 50 Hz
Gabon	C, E		220 V	380 V	50 Hz
Gambia	G		230 V	400 V	50 Hz
Georgia	C, F		220 V	380 V	50 Hz
Germany	C F	DIN VDE 0620 DIN 49441	230 V	400 V	50 Hz
Ghana	D, G		230 V	400 V	50 Hz
Gibraltar	C, G		240 V	415 V	50 Hz
Greece	C, F		230 V	400 V	50 Hz
Greenland	C, E, F, K		230 V	400 V	50 Hz	Same as in Denmark.
Grenada	G		230 V	400 V	50 Hz
Guadeloupe	C, D, E		230 V	400 V	50 Hz
Guam	A, B		110 V	190 V	60 Hz
Guatemala	A, B		120 V	208 V	60 Hz
Guernsey	G		230 V	400 V	50 Hz
Guinea	C, F, K		220 V	380 V	50 Hz
Guinea-Bissau	C, E, F		220 V	380 V	50 Hz
Guyana	A, B, D, G		240 V[1][33][34]	190 V[35][36]	60 Hz[1][33][34]
Haiti	A, B		110 V	220/380 V 110/220 V	60 Hz
Honduras	A, B		110 V	208 V 230 V 240 V 460 V 480 V	60 Hz
Hong Kong	G D, M[37]	BS 1363 BS 546	220 V	380 V	50 Hz	Type G is most common.
Hungary	C F	MSZ EN 50075 MSZ 9781-2	230 V	400 V	50 Hz
Iceland	C, F		230 V	400 V	50 Hz
India	D, M	IS 1293:2019[38]	230 V[7]	400 V[39]	50 Hz	The combination of a type C, E or F plug with a type D socket may often be workable, but it is unsafe to use.[40] From August 2015, the Bureau of Indian Standards (BIS) began clamping down on the sale of imported products with type C/E/F plugs by pushing manufacturers and importers to comply with the IS 1293 standard.[41] In June 2022, BIS began enforcing the standard through mandatory certification of both imported and domestic products.[42]
Indonesia	C, F	SNI 04-3892.1.1-2003	230 V[43]	400 V[43]	50 Hz
Iran	C, F		220 V	400 V	50 Hz
Iraq	C, D, G		230 V	400 V	50 Hz
Ireland	G	I.S. 401[44]	230 V	400 V	50 Hz	Type G is the only general purpose outlet type in use in Ireland. Bathrooms may have shaver sockets. These accept 2.5 amp Europlug CEE 7/16 and UK type BS 4573 plugs, which used on shavers and toothbrushes. They do not accept larger type C plugs and general purpose outlets are generally banned in bathrooms / wet areas. Some hotels may also provide a type F (Schuko) socket as a convenience for European visitors.
Isle of Man	G		240 V	415 V	50 Hz	Self-governing British crown dependency, but generally uses UK technical standards.
Israel	C, H		230 V	400 V	50 Hz
Italy	C F, L	CEI 23-34 CEI 23-50	230 V	400 V	50 Hz	Type L uses two gauges of plug and socket. The 10 amp version has pin spacing that is compatible with Europlug. The 16 amp version uses wider pin spacing and larger pins. Hybrid outlets that accept both types are common and some also accept type F. NB: 16 amp type C plugs, such as CEE 7/17 commonly found on hairdryers, will not fit type L outlets and need an adapter, or should be used with a type F or hybrid type L/F outlet.
Jamaica	A, B		110 V	190 V	50 Hz
Japan	A, B	JIS C 8303	100 V[45][46]	200 V 210 V[47]	50 Hz 60 Hz[46]	East Japan 50 Hz (Tokyo, Kawasaki, Sapporo, Yokohama, and Sendai); West Japan 60 Hz (Okinawa, Osaka, Kyoto, Kobe, Nagoya, Hiroshima). Most sockets accept only type A plugs. See Electricity transmission in Japan for more.
Jersey	G		230 V	400 V	50 Hz
Jordan	B, C, D, F, G, J		230 V	400 V	50 Hz
Kazakhstan	C, F		230 V	400 V	50 Hz	230/400 V voltage is defined in "GOST 29322-2014 Mezhgosudarstvennyi Standart Napryazheniya Standartnye".
Kenya	G		240 V	415 V	50 Hz
Kiribati	I	AS/NZS 3112	230 V	400 V	50 Hz
Kosovo	C, F[48]		230 V	400 V	50 Hz
Kuwait	C, G		240 V	415 V	50 Hz
Kyrgyzstan	C, F		220 V	380 V	50 Hz
Laos	A, B, C, E, F		230 V	400 V	50 Hz	Some buildings and households have hybrid sockets compatible with type A, B and C.
Latvia	C, F		230 V	400 V	50 Hz
Lebanon	A, B, C, D, G		220 V	400 V	50 Hz	Type C sockets are the most frequent. Many buildings and households have double use sockets compatible with type A and C.
Lesotho	M		220 V	380 V	50 Hz
Liberia	A, B, C, E, F		120 V 220 V	208 V	60 Hz 50 Hz
Libya	C, D, F, L		127 V 230 V	400 V	50 Hz	Barca, Benghazi, Derna, Sabha & Tobruk 230 V.[citation needed]
Liechtenstein	C, J		230 V	400 V	50 Hz
Lithuania	C, F		230 V	400 V	50 Hz
Luxembourg	C, F		230 V	400 V	50 Hz
Macau	D, F, G, M		230 V[49]	400 V	50 Hz
Madagascar	C, D, E, J, K		127 V 220 V	380 V	50 Hz
Malawi	G		230 V	400 V	50 Hz
Malaysia	C[50] G[50] M[50][51]	MS 1578:2003[50] MS 589:PT.1:1997[50] MS 1577:2003[50]	230 V[52]	400 V	50 Hz	Type G is most common. Devices using an Europlug (Type C) may be sold but require an adaptor, since there are usually no sockets for them. Type M is used mainly for air conditioners and boilers. Bathrooms may have shaver supply units.[53]
Maldives	D, G, J, K, L		230 V	400 V	50 Hz
Mali	C, E		220 V	380 V	50 Hz
Malta	G		230 V	400 V	50 Hz
Martinique	C, D, E		220 V	380 V	50 Hz
Mauritania	C, E, F		220 V	220 V	50 Hz
Mauritius	C, E, G		230 V	400 V	50 Hz
Mexico	A, B	NMX-J-163-ANCE	120 V 127 V	240 V 220 V	60 Hz	Both 120/240 V split-phase and 127/220 V three-phase are used.
Federated States of Micronesia	A, B		120 V	208 V	60 Hz
Moldova	C, F		220 V	400 V	50 Hz
Monaco	C, D, E, F		230 V	400 V	50 Hz
Mongolia	C, E, F		220 V	400 V	50 Hz
Montenegro	C, F		230 V	400 V	50 Hz
Montserrat	A, B		230 V	400 V	60 Hz
Morocco	C, E		127 V 220 V	380 V	50 Hz
Mozambique	C, F, M		220 V	380 V	50 Hz
Myanmar	A, C, D, F, G, I		230 V	400 V	50 Hz
Namibia	D, M		220 V	380 V	50 Hz
Nauru	I	AS/NZS 3112	240 V	415 V	50 Hz
Nepal	C, D, M		230 V	400 V	50 Hz
Netherlands	C F	EN 50075 NEN 1020	230 V	400 V	50 Hz
New Caledonia	C, F		220 V	380 V	50 Hz	Despite that New Caledonia is a French territory, German Schuko type F sockets are used instead of French type E sockets.
New Zealand	I	AS/NZS 3112	230 V	400 V	50 Hz
Nicaragua	A, B		120 V	208 V	60 Hz
Niger	A, B, C, D, E, F		220 V	380 V	50 Hz
Nigeria	D, G		230 V	400 V	50 Hz
Niue	I	AS/NZS 3112	230 V	400 V	50 Hz
North Korea	A, C, F		110 V 220 V	380 V	60 Hz 50 Hz
North Macedonia	C, F		230 V	400 V	50 Hz
Norway	C F	NEK EN 50075 NEK 502	230 V	230 V 400 V	50 Hz	230 V on IT grid, and 400 V on TN grid.
Oman	G		240 V	415 V	50 Hz
Pakistan	C, D, G, M		230 V	400 V	50 Hz
Palau	A, B		120 V	208 V	60 Hz
Palestine	C, H		230 V	400 V	50 Hz
Panama	A, B		110 V	240 V	60 Hz
Papua New Guinea	I	AS/NZS 3112	240 V	415 V	50 Hz
Paraguay	A, B, C N	– PNA-IEC 60906-1	220 V	380 V	50 Hz	In 2022, Type N was chosen as new national standard, but so far hybrid A/C or A/B/C sockets are most common.
Peru	A, B, C F, L[54]		220 V	380 V 440 V	60 Hz
Philippines	A, B, C		230 V[7][55]	400 V	60 Hz	Many buildings and households have double-use sockets compatible with type A and C, and often also with B for grounded plugs. NEMA 6-15 is used for air conditioners.
Pitcairn Islands	I	AS/NZS 3112	230 V	400 V	50 Hz
Poland	C, E	BN-88/3064	230 V	400 V	50 Hz
Portugal	C, E, F	NP 1260	230 V	400 V	50 Hz	Type E is very rare, used only in very old installations.
Puerto Rico	A, B		120 V	480 V	60 Hz
Qatar	D, F, G, L		240 V	415 V	50 Hz
Réunion	C, E		220 V	400 V	50 Hz
Romania	C, F		230 V	400 V	50 Hz
Russia	C, F		230 V[11]	400 V	50 Hz	USSR (along with much of Eastern Europe) used GOST sockets with 4.0 mm pins similar to type C plugs and the 4.8 mm standard used by type E & F.[56]
Rwanda	C, E, F, G[57]		230 V	400 V	50 Hz	Types C & E are official; type G has become common as well because of imports from Uganda, Tanzania and Kenya; type F is very rare.[57]
Saint Helena, Ascension and Tristan da Cunha	G[58]		230 V	400 V	50 Hz
Saint Martin (French)	C, E		220 V	380 V	60 Hz
Sint Maarten (Dutch)	A, B		120 V 127 V	220 V	60 Hz	127/220 V AC 60 Hz three-phase service.
St. Kitts and Nevis	A, B, D, G		230 V	400 V	60 Hz
St. Lucia	A, B, G		240 V	400 V	50 Hz
Saint Pierre and Miquelon	C, E, F[59]		230 V	400 V	50 Hz
St. Vincent and the Grenadines	A, B, C, E, G, I, K		230 V	400 V	50 Hz
Samoa	I	AS/NZS 3112	230 V	400 V	50 Hz
San Marino	C, F, L		230 V	400 V	50 Hz
São Tomé and Príncipe	C, F		220 V	400 V	50 Hz
Saudi Arabia	G	SASO 2203	220 V 230 V	400 V	50 Hz 60 Hz
Senegal	C, D, E, K		230 V	400 V	50 Hz
Serbia	C F	JUS N.E3.552 JUS N.E3.553	230 V	400 V	50 Hz
Seychelles	G		240 V	240 V	50 Hz
Sierra Leone	D, G		230 V	400 V	50 Hz
Singapore	C G M	– SS 145 SS 472	230 V	400 V	50 Hz	Type G sockets are most common. Type C appliances may be sold, but may require an adaptor for use with these sockets. Type M is used mainly for air conditioners and other high-powered equipment.[60] Hotel bathrooms may have shaver supply units.
Slovakia	C, E, F	STN 34 4516	230 V	400 V	50 Hz
Slovenia	C, F		230 V	400 V	50 Hz
Solomon Islands	G, I	AS/NZS 3112	230 V	400 V	50 Hz
Somalia	C, G		220 V	380 V	50 Hz
South Africa	C, M, N	SANS 164	230 V	400 V	50 Hz
South Korea	C, F	KS C 8305	220 V	380 V	60 Hz
Spain	C, F	UNE 20315	230 V	400 V	50 Hz	Type E is extremely rare, but it may appear in some buildings, such as the University Carlos III of Madrid. Almost every Spanish plug would work on Type E sockets.
Sri Lanka	D, G, M	SLS 734	230 V	400 V	50 Hz	Only type G permitted to be manufactured or imported from August 2017.[61]
Sudan	C, D, F, G		230 V	400 V	50 Hz
Suriname	C, F[1][62][63]		127 V	220 V 400 V	60 Hz
Sweden	C F	SS-EN 50075 SS 428 08 34	230 V	400 V	50 Hz	Bathrooms may have shaver supply units.
Switzerland	C, J	SN 441011 (former: SEV 1011:2009)[64][65]	230 V	400 V	50 Hz
Syria	C, E, L		220 V	380 V	50 Hz
Taiwan	A B	CNS 690 CNS 15767	110 V	220 V 380 V	60 Hz	Sockets in older buildings are often unearthed and accept only type A plugs.
Tajikistan	C, F, I		220 V	380 V	50 Hz
Tanzania	D, G		230 V	400 V	50 Hz
Thailand	A, B, C, O	TISS 166-2549[66][67]	220 V	400 V	50 Hz	Sockets are combisockets that accept American (A, B) and Europlugs (C) as well as the newly introduced Thai plug (O). Sockets also accept French and Schuko plugs (E, F), but unsafely (without establishing earth contact), therefore the sale of appliances with E or F plugs has been banned.
Timor-Leste (East Timor)	C, E, F, I		220 V	380 V	50 Hz
Togo	C, E		220 V	380 V	50 Hz
Tonga	I	AS/NZS 3112	230 V	400 V	50 Hz
Trinidad and Tobago	A, B		115 V	115/230 V 230/400 V	60 Hz
Tunisia	C, E		230 V	400 V	50 Hz
Turkey	C, F		230 V[68]	400 V	50 Hz
Turkmenistan	B, C, F		220 V	380 V	50 Hz
Tuvalu	I	AS/NZS 3112	230 V	400 V	50 Hz
Uganda	G		240 V	415 V	50 Hz
Ukraine	C, F		230 V[69]	400 V	50 Hz
United Arab Emirates	G[70]	BS 1363[70]	230 V[71]	400 V[71]	50 Hz[71]	Bathrooms may have shaver supply units.[70]
United Kingdom	G[72] D, M	BS 1363 BS 546	230 V[73]	400 V	50 Hz	Type D mostly historical, nowadays used only for remotely switched lighting and similar. Type M historically used in domestic installations, now only for stage lighting (where they are increasingly replaced with Ceeform). Bathrooms may have shaver supply units.[74]
United States	A B NEMA 14-30 NEMA 14-50	NEMA 1-15 NEMA 5-15 NEMA 14-30 NEMA 14-50	120 V 240 V	120/208 V 277/480 V 120/240 V 240 V 480 V	60 Hz	NEMA 5-20R outlets, which are similar to type B but have a T-shaped neutral slot, are sometimes used for higher current 120 V equipment (up to 20 A).
U.S. Virgin Islands	A B	NEMA 1-15P NEMA 5-15P	110 V	190 V	60 Hz
Uruguay	C, F, I, L		230 V	400 V	50 Hz	Type I was the main standard until the 1990s, and still appears in old installations.
Uzbekistan	C, E, F		220 V	380 V	50 Hz
Vanuatu	C, G, I	AS/NZS 3112	230 V	400 V	50 Hz
Venezuela	A, B		120 V[7][75]	208 V 240 V[75]	60 Hz[7][75]
Vietnam	A, B, C, F	TCVN 6188-1	220 V	380 V	50 Hz	Most households use unearthed hybrid sockets that accept type A and C plugs. Hybrid sockets that accept type A, B and C plugs are sometimes used in commercial installations. Type E or F (French/Schuko) plugs are frequently plugged into hybrid sockets, though this is somewhat unsafe, as no earth contact is made.
Yemen	A, D, G		240 V	400 V	50 Hz
Zambia	C, D, G		230 V	400 V	50 Hz
Zimbabwe	D, G		220 V	380 V	50 Hz

Notes

1. "C" indicates that buildings have three-pin sockets compatible with Europlugs, which also work with other plug types, or that buildings have some or all two-pin European style sockets, similar to CEE 7/1. Not all two-pin European plugs are compatible with all two-pin European sockets; see AC power plugs and sockets § Comparison of standard types.

See also

• Delta-wye transformer
• Electrical wiring
• Electric power transmission
• Electrification
• Electrical grid
• List of railway electrification systems
• Mains electricity