When performing a voltage check, what must be done before touching conductors?

When performing a voltage check, what must be done before touching conductors?

• A. De-energize, verify zero voltage with a test instrument, and follow LOTO.
• B. Increase voltage to test amperage.
• C. Remove insulation from conductors.
• D. Hand-test with a screwdriver.

Answer: (A)

Before touching conductors, the safe practice is to de-energize the circuit, verify zero voltage with a properly rated test instrument, and apply Lockout/Tagout to prevent re-energizing. De-energizing removes the energy source so you aren’t exposed to live electrical potential. Verifying zero voltage confirms there is no remaining or stored energy that could surprise you, using a test instrument capable of detecting the expected range. Lockout/Tagout helps ensure the circuit stays isolated while you work, even if someone else could accidentally restore power. The other options introduce immediate danger: increasing voltage to test amperage would energize the circuit; removing insulation exposes live conductors; and hand-testing with a screwdriver can cause a shock or arc and creates a dangerous short or contact path.

Before touching conductors, the safe practice is to de-energize the circuit, verify zero voltage with a properly rated test instrument, and apply Lockout/Tagout to prevent re-energizing. De-energizing removes the energy source so you aren’t exposed to live electrical potential. Verifying zero voltage confirms there is no remaining or stored energy that could surprise you, using a test instrument capable of detecting the expected range. Lockout/Tagout helps ensure the circuit stays isolated while you work, even if someone else could accidentally restore power. The other options introduce immediate danger: increasing voltage to test amperage would energize the circuit; removing insulation exposes live conductors; and hand-testing with a screwdriver can cause a shock or arc and creates a dangerous short or contact path.