ECN Forum Forums Code Related Discussion NEC & other Code issues Need opinion

Read 250.8 2002 handbook. Also explains, Listed clamps or other Listed means. Shows pic of 4" square box with Listed ground screw. cable clamp box screw is Not a Gr, screw.Page 178 2002 NFPA code handbook.Now if thread correct you could use threaded hole to intall a Proper gr screw.