Insulated Hand Tools (1000V)

Insulated hand tools have tested, layered insulation that protects the user if the tool touches an energized part. They’re required for qualified workers who must work near exposed live parts. A tool with a rubbery “comfort grip” is not the same thing.

• Electricians
• Maintenance
• Qualified persons

How to recognize a real insulated tool

• Marked with the double-triangle symbol and 1000V (rated for 1,000 volts AC and 1,500 volts DC)
• Tested to ASTM F1505 and/or IEC 60900; each tool is typically tested at 10,000 volts at the factory
• Insulation molded on in layers, often with a contrasting inner color (like yellow under red) that shows through when the outer layer is worn or cut
• Insulation covers the handle and most of the shaft, leaving only the working tip bare

When they’re required

• OSHA requires insulated tools or handling equipment when you work near exposed energized conductors or circuit parts and the tool might contact them.
• NFPA 70E calls for insulated tools inside the restricted approach boundary of exposed energized parts.
• Only qualified persons with the right training may work on or near exposed energized parts. See Qualified vs. Unqualified Workers.

Insulated tools are a backup, not a plan. The first choice is always to de-energize, lock out and test before touching. See Lockout/Tagout.

Inspect before every use

• No cuts, nicks, cracks, holes or bubbles in the insulation
• Inner color layer is not showing through
• No paint, grease or conductive dirt on the insulation
• Insulation hasn’t slid or pulled away from the tip
• Markings (double triangle, 1000V, standard) readable
• Tool is clean and dry

Damaged insulated tools can’t be repaired by taping. Take them out of service and replace them.

Care

• Don’t use insulated tools as pry bars or hammers; it cracks the insulation
• Don’t toss them loose in a toolbox with sharp tools; use a roll or separate case
• Don’t heat, solvent-clean or modify them
• Don’t leave them in direct sun or high heat for long periods

Last updated: October 2, 2026