Rubber insulating gloves come in how many classes?

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Rubber insulating gloves are rated by class to indicate the voltage they can safely insulate. In this safety context, there are four classes, each representing a different protection level for varying voltages. You choose the class based on the maximum voltage you might encounter and pair the gloves with a leather protector for added mechanical protection. Before use, inspect the gloves for cracks, cuts, or thinning and perform the required tests; if damaged, they’re taken out of service. The four-class system covers the typical voltage ranges you’ll work with, making four the correct count.