Cameroon.

220 V · 50 Hz on Type C, Type E.

French-style installation at 220 V 50 Hz: two-pin Type C plus earthed Type E sockets. Plugs from continental Europe fit without adapters; UK and North American visitors need one, and 120 V-only devices also need voltage conversion.

The voltage window

A nominal 220 V supply may legitimately sit anywhere between 198 and 242 V (±10%). Dual-voltage gear (marked 100–240 V) shrugs at all of it.

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

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Pack an adapter — Cameroon runs 220 V 50 Hz on Type C, Type E — and your 120 V appliances need to be dual-voltage or transformed, adapter or not.

Type A needs an adapter
Cameroon's Type C / Type E sockets don't take a Type A plug.
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Type B needs an adapter
Cameroon's Type C / Type E 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.