Which voltage level is defined as high voltage?

Which voltage level is defined as high voltage?

• A. 601 V and higher
• B. 1000 V
• C. 480 V
• D. 230 V

Answer: (A)

High voltage is defined by a boundary in safety practice: voltages above 600 V require stricter precautions and procedures. The line is drawn at 600 V so anything beyond it—601 V and higher—falls into the high-voltage category. This is why the option describing 601 V and higher best fits the definition, as it covers all voltages above 600 V (such as 1000 V). Voltages like 230 V and 480 V are at or below the 600 V threshold, so they’re not considered high voltage under this standard.

High voltage is defined by a boundary in safety practice: voltages above 600 V require stricter precautions and procedures. The line is drawn at 600 V so anything beyond it—601 V and higher—falls into the high-voltage category. This is why the option describing 601 V and higher best fits the definition, as it covers all voltages above 600 V (such as 1000 V). Voltages like 230 V and 480 V are at or below the 600 V threshold, so they’re not considered high voltage under this standard.