As laser cladding equipment products are exported more and more, different voltages in different countries require customized power supply devices. This article lists the three-phase voltages and frequencies around the world.
Please note that since three-phase electricity is rarely used for household purposes, the following table is only relevant to electricians, electrical engineers and other technicians.
| No. | country / region | Three-phase electricity (industrial voltage) | Frequency (Hz) | Number of wires (excluding ground wire) |
| 1 | Abu Dhabi | 400 V | 50Hz | 3,4 |
| 2 | Afghanistan | 380 V | 50Hz | 4 |
| 3 | Albania | 400 V | 50Hz | 4 |
| 4 | Algeria | 400 V | 50Hz | 4 |
| 5 | American Samoa | 208 V | 60Hz | 3,4 |
| 6 | Andorra | 400 V | 50Hz | 3,4 |
| 7 | Angola | 380 V | 50Hz | 4 |
| 8 | Anguilla | 120/208 V 127/220 V 240/415 V | 60Hz | 3,4 |
| 9 | Antigua and Barbuda | 400 V | 60Hz | 3,4 |
| 10 | Argentina | 380 V | 50Hz | 3,4 |
| 11 | Armenia | 400 V | 50Hz | 4 |
| 12 | Aruba | 220V | 60Hz | 3,4 |
| 13 | Australia | 400 V | 50Hz | 3,4 |
| 14 | Austria | 400 V | 50Hz | 3,4 |
| 15 | Azerbaijan | 380 V | 50Hz | 4 |
| 16 | Azores | 400 V | 50Hz | 3,4 |
| 17 | Bahamas | 208 V | 60Hz | 3,4 |
| 18 | Bahrain | 400 V | 50Hz | 3,4 |
| 19 | Balearic Islands | 400 V | 50Hz | 3,4 |
| 20 | Bangladesh | 380 V | 50Hz | 3,4 |
| 21 | Barbados | 200 V | 50Hz | 3,4 |
| 22 | Belarus | 380 V | 50Hz | 4 |
| 23 | Belgium | 400 V | 50Hz | 3,4 |
| 24 | Belize | 190 V 380 V | 60Hz | 3,4 |
| 25 | Benin | 380 V | 50Hz | 4 |
| 26 | Bermuda | 208 V | 60Hz | 3,4 |
| 27 | Bhutan | 400 V | 50Hz | 4 |
| 28 | Bolivia | 400 V | 50Hz | 4 |
| 29 | Bonaire | 220V | 50Hz | 3,4 |
| 30 | Bosnia and Herzegovina | 400 V | 50Hz | 4 |
| 31 | Botswana | 400 V | 50Hz | 4 |
| 32 | Brazil | 220/380 V | 60Hz | 3,4 |
| 33 | British Virgin Islands | 190 V | 60Hz | 3,4 |
| 34 | Brunei | 415 V | 50Hz | 4 |
| 35 | Bulgaria | 400 V | 50Hz | 4 |
| 36 | Burkina Faso | 380 V | 50Hz | 4 |
| 37 | Burma (Myanmar) | 400 V | 50Hz | 4 |
| 38 | Burundi | 380 V | 50Hz | 4 |
| 39 | Cambodia | 400 V | 50Hz | 4 |
| 40 | Cameroon | 380 V | 50Hz | 4 |
| 41 | Canada | 120/208 V 240 V 480 V 347/600 V | 60Hz | 3,4 |
| 42 | Canary Islands | 400 V | 50Hz | 3,4 |
| 43 | Cape Verde (Portuguese: Cabo Verde) | 400 V | 50Hz | 3,4 |
| 44 | Cayman Islands | 240V | 60Hz | 3 |
| 45 | Central African Republic | 380 V | 50Hz | 4 |
| 46 | Chad | 380 V | 50Hz | 4 |
| 47 | Channel Islands (Guernsey and Jersey) | 400 V | 50Hz | 4 |
| 48 | Chile | 380 V | 50Hz | 3,4 |
| 49 | China Mainland | 380 V | 50Hz | 3,4 |
| 50 | China Hongkong | 380 V | 50Hz | 3,4 |
| 51 | China Macao | 380 V | 50Hz | 3 |
| 52 | China Taiwan | 220V | 60Hz | 4 |
| 53 | Colombia | 220 V 440 V | 60Hz | 3,4 |
| 54 | Comoros | 380 V | 50Hz | 4 |
| 55 | Congo – Kinshasa (Democratic Republic of Congo) | 380 V | 50Hz | 3,4 |
| 56 | Congo – Brazzaville (Republic of the Congo) | 400 V | 50Hz | 3,4 |
| 57 | Cook Island | 415 V | 50Hz | 3,4 |
| 58 | costa rica | 240V | 60Hz | 3,4 |
| 59 | Côte d’Ivoire(Ivory Coast) | 380 V | 50Hz | 3,4 |
| 60 | Croatia | 400 V | 50Hz | 4 |
| 61 | Cuba | 190 V 440 V | 60Hz | 3 |
| 62 | Curacao | 220 V 380 V | 50Hz | 3,4 |
| 63 | Cyprus | 400 V | 50Hz | 4 |
| 64 | Czechia | 400 V | 50Hz | 3,4 |
| 65 | Denmark | 400 V | 50Hz | 3,4 |
| 66 | Djibouti | 380 V | 50Hz | 4 |
| 67 | Dominican | 400 V | 50Hz | 4 |
| 68 | Dominican Republic | 120/208 V 277/480 V | 60Hz | 3,4 |
| 69 | Dubai (not a country, but the largest city in the United Arab Emirates) | 400 V | 50Hz | 3,4 |
| 70 | East Timor | 380 V | 50Hz | 4 |
| 71 | Ecuador | 208 V | 60Hz | 3,4 |
| 72 | Egypt | 380 V | 50Hz | 3,4 |
| 73 | El Salvador | 200 V | 60Hz | 3 |
| 74 | England/Britain（U.K.） | 400 V | 50Hz | 4 |
| 75 | Equatorial Guinea | / | / | / |
| 76 | Eritrea | 400 V | 50Hz | 4 |
| 77 | Estonia | 400 V | 50Hz | 4 |
| 78 | Ethiopia | 380 V | 50Hz | 4 |
| 79 | Faroe Islands | 400 V | 50Hz | 3,4 |
| 80 | Falkland Islands | 415 V | 50Hz | 4 |
| 81 | Fiji | 415 V | 50Hz | 3,4 |
| 82 | Finland | 400 V | 50Hz | 3,4 |
| 83 | France | 400 V | 50Hz | 4 |
| 84 | French Guiana | 380 V | 50Hz | 3,4 |
| 85 | Gabon (Gabonese Republic) | 380 V | 50Hz | 4 |
| 86 | Gambia | 400 V | 50Hz | 4 |
| 87 | Gaza | 400 V | 50Hz | 4 |
| 88 | Georgia | 380 V | 50Hz | 4 |
| 89 | Germany | 400 V | 50Hz | 4 |
| 90 | Ghana | 400 V | 50Hz | 3,4 |
| 91 | Gibraltar | 400 V | 50Hz | 4 |
| 92 | United Kingdom (GB) | 400 V | 50Hz | 4 |
| 93 | Greece | 400 V | 50Hz | 4 |
| 94 | Greenland | 400 V | 50Hz | 3,4 |
| 95 | Greneda | 400 V | 50Hz | 4 |
| 96 | Guadeloupe | 400 V | 50Hz | 3,4 |
| 97 | Guam | 190 V | 60Hz | 3,4 |
| 98 | Guatemala | 208 V | 60Hz | 3,4 |
| 99 | Guinea | 380 V | 50Hz | 3,4 |
| 100 | Guinea-Bissau | 380 V | 50Hz | 3,4 |
| 101 | Guyana | 190 V | 60Hz | 3,4 |
| 102 | Haiti | 190 V | 60Hz | 3,4 |
| 103 | Holland (formally Netherlands) | 400 V | 50Hz | 3,4 |
| 104 | Honduras | 208 V 230 V 240 V 460 V 480 V | 60Hz | 3,4 |
| 105 | Hungary | 400 V | 50Hz | 3,4 |
| 106 | Iceland | 400 V | 50Hz | 3,4 |
| 107 | India | 400 V | 50Hz | 4 |
| 108 | Indonesia | 400 V | 50Hz | 4 |
| 109 | Iran | 400 V | 50Hz | 3,4 |
| 110 | Iraq | 400 V | 50Hz | 4 |
| 111 | Ireland | 400 V | 50Hz | 4 |
| 112 | Ireland, North | 400 V | 50Hz | 4 |
| 113 | Isle of Man | 400 V | 50Hz | 4 |
| 114 | Israel | 400 V | 50Hz | 4 |
| 115 | Italy | 400 V | 50Hz | 4 |
| 116 | Jamaica | 190 V | 50Hz | 3,4 |
| 117 | Japan | 200 V | 50 Hz / 60 Hz | 3 |
| 118 | Jordan | 400 V | 50Hz | 3,4 |
| 119 | Kazakhstan | 380 V | 50Hz | 3,4 |
| 120 | Kenya | 415 V | 50Hz | 4 |
| 121 | Kiribati | / | / | / |
| 122 | North Korea | 380 V | 50Hz | 3,4 |
| 123 | South Korea | 380 V | 60Hz | 4 |
| 124 | Kosovo | 230 V 400 V | 50Hz | 3 |
| 125 | Kuwait | 415 V | 50Hz | 4 |
| 126 | Kyrgyzstan | 380 V | 50Hz | 3,4 |
| 127 | Laos | 400 V | 50Hz | 4 |
| 128 | Latvia | 400 V | 50Hz | 4 |
| 129 | Lebanon | 400 V | 50Hz | 4 |
| 130 | Lesotho | 380 V | 50Hz | 4 |
| 131 | Liberia | 208 V | 60Hz | 3,4 |
| 132 | Libya | 400 V | 50Hz | 4 |
| 133 | Liechtenstein | 400 V | 50Hz | 4 |
| 134 | Lithuania | 400 V | 50Hz | 4 |
| 135 | Luxembourg | 400 V | 50Hz | 4 |
| 136 | Macedonia, North | 400 V | 50Hz | 4 |
| 137 | Madagascar | 380 V | 50Hz | 3,4 |
| 138 | Madeira | 400 V | 50Hz | 3,4 |
| 139 | Malawi | 400 V | 50Hz | 3,4 |
| 140 | Malaysia | 415 V | 50Hz | 4 |
| 141 | Maldives | 400 V | 50Hz | 4 |
| 142 | Mali | 380 V | 50Hz | 3,4 |
| 143 | Malta | 400 V | 50Hz | 4 |
| 144 | Marshall Islands | / | / | / |
| 145 | Martinique | 380 V | 50Hz | 3,4 |
| 146 | mauritania | 220V | 50Hz | 3,4 |
| 147 | Mauritius | 400 V | 50Hz | 4 |
| 148 | Mayotte | / | / | / |
| 149 | Mexico | 220 V 480 V | 60Hz | 3,4 |
| 150 | Federated States of Micronesia | / | / | / |
| 151 | Moldova | 400 V | 50Hz | 4 |
| 152 | Monaco | 400 V | 50Hz | 4 |
| 153 | Mongolia | 400 V | 50Hz | 4 |
| 154 | Montenegro | 400 V | 50Hz | 3,4 |
| 155 | Montserrat | 400 V | 60Hz | 4 |
| 156 | Morocco | 380 V | 50Hz | 4 |
| 157 | Mozambique | 380 V | 50Hz | 4 |
| 158 | Myanmar (formerly Burma) | 400 V | 50Hz | 4 |
| 159 | Namibia | 380 V | 50Hz | 4 |
| 160 | Nauru | 415 V | 50Hz | 4 |
| 161 | Nepal | 400 V | 50Hz | 4 |
| 162 | New Caledonia | 380 V | 50Hz | 3,4 |
| 163 | New Zealand | 400 V | 50Hz | 3,4 |
| 164 | Nicaragua | 208 V | 60Hz | 3,4 |
| 165 | Niger | 380 V | 50Hz | 4 |
| 166 | Nigeria | 415 V | 50Hz | 4 |
| 167 | Northern Ireland | 400 V | 50Hz | 4 |
| 168 | North Macedonia | 400 V | 50Hz | 4 |
| 169 | Norway | 230 V 400 V | 50Hz | 3,4 |
| 170 | Oman | 415 V | 50Hz | 4 |
| 171 | Pakistan | 400 V | 50Hz | 3 |
| 172 | Palau | 208 V | 60Hz | 3 |
| 173 | Panama | 240V | 60Hz | 3 |
| 174 | Papua New Guinea | 415 V | 50Hz | 4 |
| 175 | Paraguay | 380 V | 50Hz | 4 |
| 176 | Peru | 220V | 60Hz | 3 |
| 177 | Philippines | 380 V | 60Hz | 3 |
| 178 | Pitcairn Islands | / | / | / |
| 179 | Poland | 400 V | 50Hz | 4 |
| 180 | Portugal | 400 V | 50Hz | 3,4 |
| 181 | Puerto Rico | 480V | 60Hz | 3,4 |
| 182 | Qatar | 415 V | 50Hz | 3,4 |
| 183 | Romania | 400 V | 50Hz | 4 |
| 184 | Russia (officially the Russian Federation) | 380 V | 50Hz | 4 |
| 185 | Rwanda | 400 V | 50Hz | 4 |
| 186 | Saba | / | / | / |
| 187 | Saint Barthelemy (also informally known as Saint Barth or Saint Barth) | / | / | / |
| 188 | Saint Kitts and Nevis (formally the Federation of Saint Christopher and Nevis) | 400 V | 60Hz | 4 |
| 189 | saint lucia | 400 V | 50Hz | 4 |
| 190 | St. Martin | 220V | 60Hz | 3,4 |
| 191 | St. Helena | / | / | / |
| 192 | Sint Eustatius | 220V | 60Hz | 3,4 |
| 193 | Saint Vincent and the Grenadines | 400 V | 50Hz | 4 |
| 194 | Samoa | 400 V | 50Hz | 3,4 |
| 195 | san marino | 400 V | 50Hz | 4 |
| 196 | Sao Tome and Principe | 400 V | 50Hz | 3,4 |
| 197 | Saudi Arabia | 400 V | 60Hz | 4 |
| 198 | Scotland | 400 V | 50Hz | 4 |
| 199 | Senegal | 400 V | 50Hz | 3,4 |
| 200 | Serbia | 400 V | 50Hz | 3,4 |
| 201 | Seychelles | 240V | 50Hz | 3 |
| 202 | Sierra Leone | 400 V | 50Hz | 4 |
| 203 | Singapore | 400 V | 50Hz | 4 |
| 204 | Slovakia | 400 V | 50Hz | 4 |
| 205 | Slovenia | 400 V | 50Hz | 3,4 |
| 206 | Solomon Islands | / | / | Slovenia |
| 207 | Somali | 380 V | 50Hz | 3,4 |
| 208 | Somaliland | 380 V | 50Hz | 3,4 |
| 209 | South Africa | 400 V | 50Hz | 3,4 |
| 210 | South Sudan | 400 V | 50Hz | 4 |
| 211 | Spain | 400 V | 50Hz | 3,4 |
| 212 | Sri Lanka | 400 V | 50Hz | 4 |
| 213 | Sudan | 400 V | 50Hz | 4 |
| 214 | Surinam | 220 V 400 V | 60Hz | 3,4 |
| 215 | Swaziland | 400 V | 50Hz | 4 |
| 216 | Sweden | 400 V | 50Hz | 3,4 |
| 217 | Switzerland | 400 V | 50Hz | 3,4 |
| 218 | Syria | 380 V | 50Hz | 3 |
| 219 | Tahiti | 380 V | 50 Hz / 60 Hz | 3,4 |
| 220 | Tajikistan | 380 V | 50Hz | 3 |
| 221 | Tanzania | 415 V | 50Hz | 3,4 |
| 222 | Thailand | 400 V | 50Hz | 3,4 |
| 223 | Togo | 380 V | 50Hz | 4 |
| 224 | Tonga | 415 V | 50Hz | 3,4 |
| 225 | Trinidad and Tobago | 115/230 V 230/400 V | 60Hz | 4 |
| 226 | Tunisia | 400 V | 50Hz | 4 |
| 227 | Turkey | 400 V | 50Hz | 3,4 |
| 228 | Turkmenistan | 380 V | 50Hz | 3 |
| 229 | Turks and Caicos Islands | 240V | 60Hz | 4 |
| 230 | Uganda | 415 V | 50Hz | 4 |
| 231 | Ukraine | 400 V | 50Hz | 4 |
| 232 | United Arab Emirates | 400 V | 50Hz | 3,4 |
| 233 | United States of America (USA) | 120/208 V 277/480 V 120/240 V 240 V / 480 V | 60Hz | 3,4 |
| 234 | United States Virgin Islands | 190 V | 60Hz | 3,4 |
| 235 | Uruguay | 380 V | 50Hz | 3 |
| 236 | Uzbekistan | 380 V | 50Hz | 4 |
| 237 | Vanuatu | 400 V | 50Hz | 3,4 |
| 238 | Venezuela | 120 V | 60Hz | 3,4 |
| 239 | Vietnam | 380 V | 50Hz | 4 |
| 240 | Virgin Islands (British) | 190 V | 60Hz | 3,4 |
| 241 | Virgin Islands (USA) | 190 V | 60Hz | 3,4 |
| 242 | Wales | 400 V | 50Hz | 4 |
| 243 | Yemen | 400 V | 50Hz | 4 |
| 244 | Zambia | 400 V | 50Hz | 4 |
| 245 | Zimbabwe | 415 V | 50Hz | 3,4 |
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