30 CFR 57.12020 - Protection of persons at switchgear.
Dry wooden platforms, insulating mats, or other electrically-nonconductive material shall be kept in place at all switchboards and power-control switches where shock hazards exist. However, metal plates on which a person normally would stand and which are kept at the same potential as the grounded, metal, non-current-carrying parts of the power switches to be operated may be used.
Title 30 published on 2014-07-01
no entries appear in the Federal Register after this date.