O ran y foltedd a ddefnyddir ar gyfer offer ac offer, mae'r ddau gyfandir blaenllaw - yr America ac Ewrop - yn wahanol iawn. Mae Ewrop yn defnyddio 220 folt, tra bod Gogledd America yn defnyddio 110 folt. Mae Asia ac Affrica, dan ddylanwad Ewrop, wedi dilyn eu harweiniad.
Tair - Gall trydan gyfnod drin anghenion pŵer dyfeisiau mwy, mwy pwerus. Felly, fe'i defnyddir yn fwy cyffredin mewn lleoliadau masnachol a diwydiannol i bweru offer mawr, pŵer - llwglyd. Fodd bynnag, os oes gennych system aerdymheru fawr eisoes, ffwrnais fawr, gwresogydd dŵr pwerus heb danc, neu weithdy cartref gydag offer mecanyddol, gall tri - trydan cyfnod fod yn fwy addas i chi.

3 cham amgen cerrynt
Foltedd ac amlder mewn gwahanol wledydd
|
Ngwlad |
3 foltedd cam |
Amledd |
Nifer y gwifrau (heb gynnwys y wifren ddaear) |
|
|
Abu Dhabi (nid gwlad, ond prifddinas yr Emiraethau Arabaidd Unedig) |
400 V |
50 Hz |
3, 4 |
|
|
Afghanistan |
380 V |
50 Hz |
4 |
|
|
Albania |
400 V |
50 Hz |
4 |
|
|
Algeria |
400 V |
50 Hz |
4 |
|
|
Samoa Americanaidd |
208 V |
60 Hz |
3, 4 |
|
|
Andorra |
400 V |
50 Hz |
3, 4 |
|
|
Angola |
380 V |
50 Hz |
4 |
|
|
Anguilla |
120/208 V / 127/220 V / 240/415 V |
60 Hz |
3, 4 |
|
|
Antigua a Barbuda |
400 V |
60 Hz |
3, 4 |
|
|
Yr Ariannin |
380 V |
50 Hz |
3, 4 |
|
|
Harmenia |
400 V |
50 Hz |
4 |
|
|
Aruba |
220 V |
60 Hz |
3, 4 |
|
|
Awstralia |
400 V |
50 Hz |
3, 4 |
|
|
Awstria |
400 V |
50 Hz |
3, 4 |
|
|
Azerbaijan |
380 V |
50 Hz |
4 |
|
|
Azores |
400 V |
50 Hz |
3, 4 |
|
|
Bahamas |
208 V |
60 Hz |
3, 4 |
|
|
Bahrain |
400 V |
50 Hz |
3, 4 |
|
|
Ynysoedd Balearig |
400 V |
50 Hz |
3, 4 |
|
|
Bangladesh |
380 V |
50 Hz |
3, 4 |
|
|
Barbados |
200 V |
50 Hz |
3, 4 |
|
|
Belarws |
380 V |
50 Hz |
4 |
|
|
Belgium |
400 V |
50 Hz |
3, 4 |
|
|
Belai |
190 V / 380 V |
60 Hz |
3, 4 |
|
|
Brenin |
380 V |
50 Hz |
4 |
|
|
Bermuda |
208 V |
60 Hz |
3, 4 |
|
|
Bhutan |
400 V |
50 Hz |
4 |
|
|
Bolifia |
400 V |
50 Hz |
4 |
|
|
Bonaire |
220 V |
50 Hz |
3, 4 |
|
|
Bosnia a Herzegovina |
400 V |
50 Hz |
4 |
|
|
Botswana |
400 V |
50 Hz |
4 |
|
|
Brasil |
220/380 V |
60 Hz |
3, 4 |
|
|
Ynysoedd Virgin Prydain |
190 V |
60 Hz |
3, 4 |
|
|
Brunei |
415 V |
50 Hz |
4 |
|
|
Bwlgaria |
400 V |
50 Hz |
4 |
|
|
Burkina Faso |
380 V |
50 Hz |
4 |
|
|
Burma(Myanmar yn swyddogol) |
400 V |
50 Hz |
4 |
|
|
Burundi |
380 V |
50 Hz |
4 |
|
|
Cambodia |
400 V |
50 Hz |
4 |
|
|
Nghamerŵn |
380 V |
50 Hz |
4 |
|
|
Nghanada |
120/208 V / 240 V / 480 V / 347/600 V |
60 Hz |
3, 4 |
|
|
Ynysoedd caneri |
400 V |
50 Hz |
3, 4 |
|
|
Cape Verde(mewn Portiwgaleg: Cabo Verde) |
400 V |
50 Hz |
3, 4 |
|
|
Ynysoedd Cayman |
240 V |
60 Hz |
3 |
|
|
Gweriniaeth Canol Affrica |
380 V |
50 Hz |
4 |
|
|
Chad |
380 V |
50 Hz |
4 |
|
|
Ynysoedd y Sianel (Guernsey & Jersey) |
400 V |
50 Hz |
4 |
|
|
Frychi |
380 V |
50 Hz |
3, 4 |
|
|
China, Gweriniaeth Pobl o |
380 V |
50 Hz |
3, 4 |
|
|
Colombia |
220 V / 440 V |
60 Hz |
3, 4 |
|
|
Comoros |
380 V |
50 Hz |
4 |
|
|
Congo, Gweriniaeth Ddemocrataidd y (Congo - kinshasa) |
380 V |
50 Hz |
3, 4 |
|
|
Congo, Gweriniaeth y (Congo - Brazzaville) |
400 V |
50 Hz |
3, 4 |
|
|
Coginio Ynysoedd |
415 V |
50 Hz |
3, 4 |
|
|
Costa Rica |
240 V |
60 Hz |
3, 4 |
|
|
Côte d'Ivoire (Arfordir Ifori) |
380 V |
50 Hz |
3, 4 |
|
|
Croatia |
400 V |
50 Hz |
4 |
|
|
Nghiwba |
190 V / 440 V |
60 Hz |
3 |
|
|
Curaçao |
220 V / 380 V |
50 Hz |
3, 4 |
|
|
Cyprus |
400 V |
50 Hz |
4 |
|
|
Tsiecia (Gweriniaeth Tsiec) |
400 V |
50 Hz |
3, 4 |
|
|
Namnc |
400 V |
50 Hz |
3, 4 |
|
|
Djibouti |
380 V |
50 Hz |
4 |
|
|
Dominica |
400 V |
50 Hz |
4 |
|
|
Gweriniaeth Ddominicaidd |
120/208 V / 277/480 V |
60 Hz |
3, 4 |
|
|
Dubai (nid gwlad, ond y ddinas fwyaf yn yr Emiraethau Arabaidd Unedig) |
400 V |
50 Hz |
3, 4 |
|
|
East Timor (Timor - leste) |
380 V |
50 Hz |
4 |
|
|
Ecwador |
208 V |
60 Hz |
3, 4 |
|
|
Aifftiau |
380 V |
50 Hz |
3, 4 |
|
|
El Salvador |
200 V |
60 Hz |
3 |
|
|
Lloegr |
400 V |
50 Hz |
4 |
|
|
Gini Cyhydeddol |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Eritrea |
400 V |
50 Hz |
4 |
|
|
Estonia |
400 V |
50 Hz |
4 |
|
|
Ethiopia |
380 V |
50 Hz |
4 |
|
|
Ynysoedd Faeroe |
400 V |
50 Hz |
3, 4 |
|
|
Ynysoedd y Falkland |
415 V |
50 Hz |
4 |
|
|
Fiji |
415 V |
50 Hz |
3, 4 |
|
|
Ffindir |
400 V |
50 Hz |
3, 4 |
|
|
Ffrainc |
400 V |
50 Hz |
4 |
|
|
Guiana Ffrengig |
380 V |
50 Hz |
3, 4 |
|
|
Gabon (Gweriniaeth Gabonese) |
380 V |
50 Hz |
4 |
|
|
Ngambia |
400 V |
50 Hz |
4 |
|
|
Gaza |
400 V |
50 Hz |
4 |
|
|
Georgia |
380 V |
50 Hz |
4 |
|
|
Yr Almaen |
400 V |
50 Hz |
4 |
|
|
Ghana |
400 V |
50 Hz |
3, 4 |
|
|
Ngibraltar |
400 V |
50 Hz |
4 |
|
|
Prydain Fawr (GB) |
415 V |
50 Hz |
4 |
|
|
Gwlad Groeg |
400 V |
50 Hz |
4 |
|
|
Ynddland |
400 V |
50 Hz |
3, 4 |
|
|
Grenada |
400 V |
50 Hz |
4 |
|
|
Guadeloupe |
400 V |
50 Hz |
3, 4 |
|
|
Cewm |
190 V |
60 Hz |
3, 4 |
|
|
Guatemala |
208 V |
60 Hz |
3, 4 |
|
|
Gini |
380 V |
50 Hz |
3, 4 |
|
|
Guinea - bissau |
380 V |
50 Hz |
3, 4 |
|
|
Guyana |
190 V |
60 Hz |
3, 4 |
|
|
Haiti |
190 V |
60 Hz |
3, 4 |
|
|
Ngoland(yn swyddogol yr Iseldiroedd) |
400 V |
50 Hz |
3, 4 |
|
|
Honduras |
208 V / 230 V / 240 V / 460 V / 480 V |
60 Hz |
3, 4 |
|
|
Hong Kong |
380 V |
50 Hz |
3, 4 |
|
|
Hwngari |
400 V |
50 Hz |
3, 4 |
|
|
Icen |
400 V |
50 Hz |
3, 4 |
|
|
India |
400 V |
50 Hz |
4 |
|
|
Indonesia |
400 V |
50 Hz |
4 |
|
|
Iran |
400 V |
50 Hz |
3, 4 |
|
|
Irac |
400 V |
50 Hz |
4 |
|
|
Iwerddon, Gweriniaeth (Eire) |
400 V |
50 Hz |
4 |
|
|
Iwerddon, Gogledd |
400 V |
50 Hz |
4 |
|
|
Ynys dyn |
400 V |
50 Hz |
4 |
|
|
Israel |
400 V |
50 Hz |
4 |
|
|
Eidal |
400 V |
50 Hz |
4 |
|
|
Jamaica |
190 V |
50 Hz |
3, 4 |
|
|
Japaniaid |
200 V |
50 Hz / 60 Hz |
3 |
|
|
Iorddon |
400 V |
50 Hz |
3, 4 |
|
|
Kazakhstan |
380 V |
50 Hz |
3, 4 |
|
|
Kenya |
415 V |
50 Hz |
4 |
|
|
Kiribati |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Korea, Gogledd |
380 V |
50 Hz |
3, 4 |
|
|
Korea, De |
380 V |
60 Hz |
4 |
|
|
Kosovo |
230 V / 400 V |
50 Hz |
3 |
|
|
Kuwait |
415 V |
50 Hz |
4 |
|
|
Cyrgizstan |
380 V |
50 Hz |
3, 4 |
|
|
Laos |
400 V |
50 Hz |
4 |
|
|
Latfia |
400 V |
50 Hz |
4 |
|
|
Libanus |
400 V |
50 Hz |
4 |
|
|
Lesotho |
380 V |
50 Hz |
4 |
|
|
Liberia |
208 V |
60 Hz |
3, 4 |
|
|
Libya |
400 V |
50 Hz |
4 |
|
|
Liechtenstein |
400 V |
50 Hz |
4 |
|
|
Lithwania |
400 V |
50 Hz |
4 |
|
|
Lwcsembwrg |
400 V |
50 Hz |
4 |
|
|
Macau |
380 V |
50 Hz |
3 |
|
|
Macedonia, Gweriniaeth (cyn Weriniaeth Iwgoslafia Macedonia, Fyrom) |
400 V |
50 Hz |
4 |
|
|
Madagascar |
380 V |
50 Hz |
3, 4 |
|
|
Madeira |
400 V |
50 Hz |
3, 4 |
|
|
Malawi |
400 V |
50 Hz |
3, 4 |
|
|
Malaysia |
415 V |
50 Hz |
4 |
|
|
Maldives |
400 V |
50 Hz |
4 |
|
|
Mali |
380 V |
50 Hz |
3, 4 |
|
|
Malta |
400 V |
50 Hz |
4 |
|
|
Ynysoedd Marshall |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Martinique |
380 V |
50 Hz |
3, 4 |
|
|
Mauritania |
220 V |
50 Hz |
3, 4 |
|
|
Mauritius |
400 V |
50 Hz |
4 |
|
|
Mayotte |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Mecsico |
220 V / 480 V |
60 Hz |
3, 4 |
|
|
Micronesia, cyflyrau ffederal |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Moldofa |
400 V |
50 Hz |
4 |
|
|
Monaco |
400 V |
50 Hz |
4 |
|
|
Mongolia |
400 V |
50 Hz |
4 |
|
|
Montenegro |
400 V |
50 Hz |
3, 4 |
|
|
Montserrat |
400 V |
60 Hz |
4 |
|
|
Moroco |
380 V |
50 Hz |
4 |
|
|
Mozambique |
380 V |
50 Hz |
4 |
|
|
Myanmar(Burma gynt) |
400 V |
50 Hz |
4 |
|
|
Namibia |
380 V |
50 Hz |
4 |
|
|
Nauru |
415 V |
50 Hz |
4 |
|
|
Nepal |
400 V |
50 Hz |
4 |
|
|
Iseldiroedd |
400 V |
50 Hz |
3, 4 |
|
|
Caledonia Newydd |
380 V |
50 Hz |
3, 4 |
|
|
Seland Newydd |
400 V |
50 Hz |
3, 4 |
|
|
Nicaragua |
208 V |
60 Hz |
3, 4 |
|
|
Niger |
380 V |
50 Hz |
4 |
|
|
Nigeria |
415 V |
50 Hz |
4 |
|
|
Gogledd Iwerddon |
415 V |
50 Hz |
4 |
|
|
Gogledd Corea |
380 V |
50 Hz |
3, 4 |
|
|
Norwyes |
230 V / 400 V |
50 Hz |
3, 4 |
|
|
Oman |
415 V |
50 Hz |
4 |
|
|
Pacistan |
400 V |
50 Hz |
3 |
|
|
Phalau |
208 V |
60 Hz |
3 |
|
|
Panama |
240 V |
60 Hz |
3 |
|
|
Papua Gini Newydd |
415 V |
50 Hz |
4 |
|
|
Paragwydd |
380 V |
50 Hz |
4 |
|
|
Periw |
220 V |
60 Hz |
3 |
|
|
Philippinau |
380 V |
60 Hz |
3 |
|
|
Ynysoedd Pitcairn |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Boldai |
400 V |
50 Hz |
4 |
|
|
Phortiwgal |
400 V |
50 Hz |
3, 4 |
|
|
Puerto Rico |
480 V |
60 Hz |
3, 4 |
|
|
Qatar |
415 V |
50 Hz |
3, 4 |
|
|
Réunion |
400 V |
50 Hz |
4 |
|
|
Rwmania |
400 V |
50 Hz |
4 |
|
|
Rwsia(Ffederasiwn Rwsia yn swyddogol) |
380 V |
50 Hz |
4 |
|
|
Rwanda |
400 V |
50 Hz |
4 |
|
|
Saba |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Saint Barthélemy(cyfeirir yn anffurfiol hefyd fel Saint Barth's neu Saint Barts) |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Saint Kitts a Nevis(Ffederasiwn Saint Christopher a Nevis yn swyddogol) |
400 V |
60 Hz |
4 |
|
|
Saint Lucia |
400 V |
50 Hz |
4 |
|
|
Saint Martin |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Saint Helena |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Sint eustatius |
220 V |
60 Hz |
3, 4 |
|
|
Sint Maarten |
220 V |
60 Hz |
3, 4 |
|
|
Saint Vincent a'r Grenadines |
400 V |
50 Hz |
4 |
|
|
Samoa |
400 V |
50 Hz |
3, 4 |
|
|
San Marino |
400 V |
50 Hz |
4 |
|
|
São tomé a príncipe |
400 V |
50 Hz |
3, 4 |
|
|
Saudi Arabia |
400 V |
60 Hz |
4 |
|
|
Alban |
400 V |
50 Hz |
4 |
|
|
Senegal |
400 V |
50 Hz |
3, 4 |
|
|
Serbia |
400 V |
50 Hz |
3, 4 |
|
|
Seychelles |
240 V |
50 Hz |
3 |
|
|
Sierra Leone |
400 V |
50 Hz |
4 |
|
|
Singapore |
400 V |
50 Hz |
4 |
|
|
Slovakia |
400 V |
50 Hz |
4 |
|
|
Slofenia |
400 V |
50 Hz |
3, 4 |
|
|
Ynysoedd Solomon |
[ddim ar gael] |
[ddim ar gael] |
[ddim ar gael] |
|
|
Somalia |
380 V |
50 Hz |
3, 4 |
|
|
Somaliland |
380 V |
50 Hz |
3, 4 |
|
|
De Affrica |
400 V |
50 Hz |
3, 4 |
|
|
De Korea |
380 V |
60 Hz |
4 |
|
|
De Sudan |
400 V |
50 Hz |
4 |
|
|
Sbaen |
400 V |
50 Hz |
3, 4 |
|
|
Sri Lanka |
400 V |
50 Hz |
4 |
|
|
Swdan |
400 V |
50 Hz |
4 |
|
|
Swrinameg |
220 V / 400 V |
60 Hz |
3, 4 |
|
|
Swaziland |
400 V |
50 Hz |
4 |
|
|
Sweden |
400 V |
50 Hz |
3, 4 |
|
|
Swistir |
400 V |
50 Hz |
3, 4 |
|
|
Syria |
380 V |
50 Hz |
3 |
|
|
Tahiti |
380 V |
50 Hz / 60 Hz |
3, 4 |
|
|
Taiwan |
220 V |
60 Hz |
4 |
|
|
Tajikistan |
380 V |
50 Hz |
3 |
|
|
Tanzania |
415 V |
50 Hz |
3, 4 |
|
|
Nai |
400 V |
50 Hz |
3, 4 |
|
|
Togo |
380 V |
50 Hz |
4 |
|
|
Tonga |
415 V |
50 Hz |
3, 4 |
|
|
Trinidad & Tobago |
115/230 V / 230/400 V |
60 Hz |
4 |
|
|
Tiwnisia |
400 V |
50 Hz |
4 |
|
|
Twrci |
400 V |
50 Hz |
3, 4 |
|
|
Turkmenistan |
380 V |
50 Hz |
3 |
|
|
Twrciaid ac Ynysoedd Caicos |
240 V |
60 Hz |
4 |
|
|
Uganda |
415 V |
50 Hz |
4 |
|
|
Wcráin |
400 V |
50 Hz |
4 |
|
|
Emiraethau Arabaidd Unedig (Emiradau Arabaidd Unedig) |
400 V |
50 Hz |
3, 4 |
|
|
Y Deyrnas Unedig (DU) |
400 V |
50 Hz |
4 |
|
|
Unol Daleithiau America (UDA) |
120/208 V / 277/480 V / 120/240 V / 240 V / 480 V |
60 Hz |
3, 4 |
|
|
Ynysoedd Virgin yr Unol Daleithiau |
190 V |
60 Hz |
3, 4 |
|
|
Uruguay |
380 V |
50 Hz |
3 |
|
|
Uzbekistan |
380 V |
50 Hz |
4 |
|
|
Vanuatu |
400 V |
50 Hz |
3, 4 |
|
|
Venezuela |
120 V |
60 Hz |
3, 4 |
|
|
Fietnam |
380 V |
50 Hz |
4 |
|
|
Ynysoedd Virgin (Prydeinig) |
190 V |
60 Hz |
3, 4 |
|
|
Ynysoedd Virgin (UDA) |
190 V |
60 Hz |
3, 4 |
|
|
Gyfogaeth |
400 V |
50 Hz |
4 |
|
|
Yemen |
400 V |
50 Hz |
4 |
|
|
Zambia |
400 V |
50 Hz |
4 |
|
|
Zimbabwe |
415 V |
50 Hz |
3, 4 |
|







