Complete list: Three-phase electric power (voltages/frequencies
Travellers and laymen should take a look at the single-phase voltage table. This is a chart which provides an overview of the three-phase voltages and frequencies in use in all
This guide provides electricity voltage information by country, including single-phase and three-phase voltage, frequency, and plug types. Most countries have mains voltages between 220–240 V (50 or 60 Hz) and three-phase voltages between 380–415 V. The table also shows the plug types used in each country.
Three-phase voltage relies on three AC waveforms. Each waveform shifts by 120 electrical degrees from the others. This arrangement provides a more consistent and balanced power supply. Three-phase voltage usually appears with four or five wires, depending on local standards.
Single-phase and three-phase voltages vary worldwide. The U.S. uses 120V single-phase and 208-480V three-phase, while Europe and Asia commonly use 230V single-phase and 380-400V three-phase. Latin America, Africa, and Australia have their own standards, requiring global industries to design adaptable energy solutions.
Some parts of the world supply single-phase at 120V, others supply single-phase at 230V, while three-phase can vary widely from 208V line-to-line in some regions to 415V or even 480V line-to-line in others. Checking local standards helps avoid equipment damage. Adapters or transformers can help, but they may add cost and inefficiency.
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