StacksVerified U.S. regulatory reference

30 CFR §28.21

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
  1. (a)Each certificate of approval shall contain a description of the fuse and a classification of its current-interrupting capacity and current rating.
  2. (b)The certificate of approval shall specifically set forth any restrictions or limitations on the use of the fuse in providing short-circuit protection for trailing cables.
  3. (c)Each certificate of approval shall be accompanied by a reproduction of the approval label or marking design, as appropriate, to be employed by the applicant with each approved fuse as provided in § 28.23.
  4. (d)No test data or specific laboratory findings will accompany any certificate of approval; however, MSHA will release analyses of pertinent test data and specific findings upon receipt of a written request by the applicant, or when required by statute or regulation.
  5. (e)Each certificate of approval shall also contain the approved quality control plan as specified in § 28.31.