What is one safety measure that should be combined with grounding?

Regularly checking insulation for damage is an essential safety measure that complements grounding. Grounding is designed to protect individuals from electric shock by providing a safe path for excess electricity to discharge into the ground. However, if the insulation on wires or electrical equipment is compromised, it can lead to dangerous situations, such as short circuits or electric shocks.

By routinely inspecting insulation for signs of wear, fraying, or other types of damage, individuals can ensure that all electrical equipment is safe to use and that the grounding system will function effectively. This proactive approach minimizes the risk of electrical faults that could bypass the grounding mechanism, thereby safeguarding both personnel and property.

In contrast, the other options do not offer the same level of protection when used alongside grounding. For example, while wearing rubber gloves provides a layer of personal protection, it does not address potential faults in the electrical system itself. Similarly, using long extension cords and non-metallic tools may help reduce some risks but do not provide a comprehensive safety measure like routine insulation checks do. These measures might even introduce additional hazards if not properly maintained or evaluated.