Mains electricity by country

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 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.

Foreign enclaves, extraterritorial government installations, or buildings frequented by tourists may support plugs not otherwise used in a country, for the convenience of travellers.

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] 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.

(3) British type G sockets are common in Riau Islands due to their close proximity to Singapore.

Hotel bathrooms may have shaver supply units (but usually not in homes).Type M is used mainly for air conditioners, ovens, clothes dryers and some high-powered industrial/office equipment.