I want to know the answer to the following question:
What voltage is being used in railway system of South Africa and Chile?
All the background I'm provided with is that "3 kV DC is used in Belgium, Italy, Spain, Poland, the northern Czech Republic, Slovakia, Slovenia, South Africa, Chile, and former Soviet Union countries (also using 25 kV 50 Hz AC).". Is that enough to answer the question?
Answer: yes