Which standards govern the use of insulated tools?

• A. OSHA and the tool's insulation rating.
• B. ISO only.
• C. No standards exist.
• D. EPA guidelines.

Answer: (A)

Using insulated tools is about matching protection to the risk of shock when working near live parts. The governing standards come from workplace safety requirements and the tool’s own rated capability. OSHA sets the safety rules for electrical work in the workplace and requires the use of insulated tools appropriate for the voltage involved, with proper inspection and maintenance. The tool’s insulation rating tells you the maximum voltage it is designed to withstand; using a tool beyond that rating can defeat the protection it provides. Standards like NFPA 70E reinforce these practices by detailing how to choose, inspect, and use insulated tools safely. Internationally, tools may also carry IEC/EN 60900 and UL listings, but the essential idea is that safety is ensured by OSHA rules plus using tools rated for the voltage you’re working with. The other options don’t fit because they don’t provide the primary enforcement and rating framework that governs insulated-tool use in typical electrical work.