Compare the plug shapes, voltage and frequency in Antigua and Barbuda and South Africa, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Antigua and Barbuda, you will need a travel adapter for South Africa. Antigua and Barbuda uses Type A/Type B plugs, and South Africa uses Type C/Type M/Type N, so the pin shapes will not fit any wall socket. The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Antigua and Barbuda (home)
South Africa (destination)
Electrical specifications in South Africa
More about plugs in South Africa
In South Africa, the standard power plug is Type C and Type M and Type N. The country runs on 230 volts at 50 Hz. That means wall sockets in South Africa can be one of 3 different shapes — Type C, Type M, Type N, and your plug needs to physically match the socket to fit.
Full South Africa plug guide