Before you pack: the Central African Republic uses Types C and E, 230 V and 50 Hz. No surprises on voltage: the Central African Republic runs at 230 V, the same range as at home in the UK.
The same socket system is used in Congo, Mali, Niger and Burundi, so one adapter covers all of them. Travelling further to Zambia, Lesotho and Zimbabwe means a different adapter. In Africa, 21 of 55 recorded destinations use exactly this combination.
Protective earth
Grounded and ungrounded sockets may occur
Mixed supply: Type C without earth, Type E with earth. Which one is in your room only shows on arrival.
Quick check by home country
Do I need an adapter for the Central African Republic?