Could DI shoes have helped. Only when a situation is analysed can you know but I have seen several times it could have helped. You would almost not know if they worked. One of those things you really wish you had recommended AFTER the accident. Love to know more to help others if someone wants to share on the blog.
ASTM F1117 and F1116 along with ASTM F2413 are used for shoes, both EH (Electrical Hazard) and DI (Dielectric). Both have a purpose. NFPA 70E really only recognizes DI shoes. OSHA mentions them but gives no guidance on use. DI shoes are tested before use but never re-tested.