Bulgaria.

230 V · 50 Hz on Type F, Type C.

Bulgarian walls carry the recessed Schuko Type F at 230 V 50 Hz, and the two-pin Type C europlug fits every one of them. It is the same arrangement as Germany or Greece, so gear from mainland Europe works as-is; UK and North American plugs need an adapter, and 120 V-only appliances need voltage conversion too.

The voltage window

A nominal 230 V supply may legitimately sit anywhere between 207 and 253 V (±10%). Dual-voltage gear (marked 100–240 V) shrugs at all of it.

Grid facts verified against IEC World Plugs — Bulgaria. Prose is our own.

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Pack an adapter — Bulgaria runs 230 V 50 Hz on Type F, Type C — and your 120 V appliances need to be dual-voltage or transformed, adapter or not.

Type A needs an adapter
Bulgaria's Type F / Type C sockets don't take a Type A plug.
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Type B needs an adapter
Bulgaria's Type F / Type C sockets don't take a Type B plug.
the full story

Faces drawn to scale from pin dimensions · verdicts are physical fit + voltage math, not safety advice — when in doubt, ask the hardware store, not the internet.