What must be verified at portable electrical equipment every time it is used at a fair or carnival?

When using portable electrical equipment at a fair or carnival, it is essential to verify the continuity of the grounding conductor every time it is used. This is crucial because a solid grounding connection ensures that in the event of a fault, electricity has a safe path to the ground, preventing electrical shock hazards to users and minimizing the risk of fire. Grounding provides a high level of safety, particularly in environments where the equipment may be in contact with water or other conductive materials, which are common in carnival settings. Maintaining this verification helps ensure that the equipment can safely operate under the conditions typical of fairs and carnivals, where safety must be prioritized due to the high volume of people and potential for accidents.