Need information on what plugs are used where ....
Mains power systems - Wikipedia, the free encyclopedia
About Thailand:
Quote:
Voltage: 220VAC
Frequency: 50Hz
Comments: Outlets in hotels and newer buildings are usually a combination of types B and C which can accept plug types A, B and C. Outlets in older buildings are usually type A. An equal proportion of appliances have type A or C plugs, or B if it requires an Earth connection. Types A, B and combination B/C sockets are designed to fit USA/Japanese sized wall boxes.
Plug B

Plug C

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Typical Thai Power outlet (Both styles in one) - Newer Construction.

This
may even acommodate UK plugs