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Elaine asked High- voltage power supplies are sometimes designed intentionally to have larger internal resistance as a safe?
High- voltage power supplies are sometimes designed intentionally to have larger internal resistance as a safety precaution. Why is such a power supply with large internal resistance safer than a supply with the same voltage but lower internal resistance?
And got the following answer:
You can see from another answer that adding resistance to protect from electrical shock limits the current to a fraction of an amp. In electrical power distribution systems, a very small amount of inductive impedance is sometimes added to reduce the available fault current to a level that can more economically be protected by circuit breakers. A circuit breaker designed to safely clear a 10,000 amp fault is less expensive than a breaker with a higher interrupting capacity. In addition, limiting the fault current to 10,000 amps reduces the mechanical strength required to protect the conductor supporting structure from mechanical damage due to magnetic forces.