Which of the following is NOT a safe practice when using a multimeter on energized circuits?

• A. Wearing proper PPE and using voltage-rated leads
• B. Maintaining distance and using one-hand rule
• C. Verifying the meter's category rating for the voltage
• D. Touching exposed conductors without PPE to verify operation

Answer: (D)

Safety when using a multimeter on energized circuits hinges on never exposing yourself to live parts and making sure the instrument and leads are rated for the voltage. Touching exposed conductors without PPE is unsafe because it can cause electric shock, burns, or arc flash, even from brief contact. Wearing proper PPE and using voltage-rated leads provide insulation and protective barriers against those hazards. Maintaining distance and following the one-hand rule help limit the path of any fault current through the body, reducing injury if a fault occurs. Verifying the meter’s category rating for the voltage ensures the instrument can withstand the expected voltages and transients, preventing insulation failure inside the meter and ensuring safe operation.