Even those thin blue mechanic's gloves insulate 120vac. The thing to be wary of is perspiration. If your arms and hands sweat forget the gloves. I have a full set of Wiha class IV insulated screwdrivers the red and yellow ones. Ha! Starting out I had to learn to keep one hand in my pocket especially around 480 and 600 volt stuff. I still have my boots, coat, and gauntlet gloves with my hot stick roll up kit. Power-off is by far the safest precaution.