Rubber and leather gloves, along with insulated tools, are required while working above which voltage to ground?

The requirement for using rubber and leather gloves, along with insulated tools, is essential for ensuring safety while working with electrical systems. The correct answer indicates that these protective measures are necessary when working with systems where the voltage exceeds 100 volts to ground. At this voltage, there is a significant risk of electric shock, which can be fatal if proper precautions are not taken.

Rubber gloves provide insulation against electric current, protecting the worker from potential electrical hazards, while leather gloves can offer additional protection against physical abrasions or cuts when handling tools and equipment. Insulated tools are also critical in preventing current from passing through to the user, further mitigating the risk of electric shock.

In electrical safety protocols, specific voltage levels define when personal protective equipment is necessary to ensure the safety of electrical workers. Working above 100 volts necessitates these precautions, while tools and equipment designed for higher voltages would be required for safer operations at elevated voltage levels, such as those mentioned in the other choices.