In response to your article regarding electric vehicles, you mentioned on page 46 that, in South Africa, the current allocated to the average house is 60 A and in America it is 100 A (with the option of upgrading to 200 A).
This is misleading, as the voltage in South Africa is 230 volts and only 110 volts in the US. Available power is measured in kw, which is Volts × Amps. This means, in SA we have 230 × 60, that is 13,8 kw, and in America you have 110 × 100, which is 11 kw (or 110 × 200 which is 22 kw). In South Africa, you can also apply for 60 A three-phase power, which is equal to 41 kw.
I have been retired for 11 years but unless things have changed, we have more available power in our homes than the typical American home. PETER SMIT, KZN
Thank you for this, Peter. We welcome the opportunity to learn something new at POPULAR MECHANICS. Lance did a great job with the story and my own ignorance left this fact unchecked, which is a shame because it was also an issue that was riddled with other errors.
We have since enlisted the services of a copy- editing team that seems to be rather good. It was a shame that we had to end the relationship with our previous proofreader, but I can assure you that no fact or figure will go into future issues without question.
That said, your experience in the field is remarkable. It seems, to you and probably many readers, like a simple maths equation fail. But to a layman with a bit of technical knowledge, there are a lot of values to keep abreast of in that sum. I’m thankful to you and the many readers like you who use these opportunities to spread the knowledge you’ve gained over your career.
We’ve had a massive brain drain in this country that continues as foreign countries lure away our best minds. There are failings on the part of government in retaining these individuals, but I wish that each departing brain could pass on half of what they know to the next generation. That way, we could grow this country in a positive way and not keep talent shackled at the same time. – Lindsey