According to OSHA, when testing circuits over what voltage is operational verification of test equipment required?

The requirement for operational verification of test equipment, as specified by OSHA, is set at 600 volts. This threshold is significant because circuits operating at or above this voltage present increased risks and hazards. When testing such circuits, ensuring that the testing equipment is functioning correctly is vital for the safety of personnel and the accuracy of the testing process.

Operational verification involves checking that the test equipment is properly calibrated and capable of accurately measuring the voltage or current levels present in the circuit. This step is crucial because incorrect readings can lead to dangerous situations, such as equipment failure or unsafe working conditions, particularly in high-voltage environments.

The 600-volt mark is a standard benchmark within the electrical industry for establishing safety protocols, ensuring technicians utilize appropriate testing methods and equipment when working with potentially hazardous electrical systems. Thus, adherence to this standard not only protects workers but also promotes a culture of safety and responsibility in electrical practices.