We get lots of calls about why the Leister
Triac-S gun only has two legs and no ground on its power cord.

If you click on
oshagroundinfo or
osha double insulated, you are able to obtain chapter and verse from O.S.H.A. Here is the verbage from the O.S.H.A. info sheet:
“Hand held tools manufactured with non-metallic cases are called double-insulated. If approved, they do not require grounding under the National Electrical Code. Although this design method reduces the risk of grounding deficiencies, a shock hazard can still exist.”
This is good information for your safety meeting planning and you might want to print a copy to keep with your Double Insulated Leister Triac-S.