Conversation so far:
what is considered low voltage and high voltage
The International Electrotechnical Commission consider high voltage to be more than 1,500 volts for DC circuits. The IEC rates circuits 120 to 1500 VDC as low voltage.
What can high voltage do
High voltage is classified as having the potential to cause injury or harm.

Question: How do they rate AC circuits
Self-contained rewrite: How does the International Electrotechnical Commission rate high and low voltage in AC circuits