This standard covers assemblies of metal-enclosed (ME) conductors along with associated interconnections@ enclosures@ and supporting structures. When switches and disconnecting links are included@ they shall conform to this standard.This standard is concerned with performance characteristics of enclosed@ rather than open@ indoor and outdoor conductor assemblies with rated maximum operating voltages through 38 kV. While this standard does cover 600 V bus assemblies@ it does not pertain to UL 857-2001 type busways and associated fittings@ nor does it pertain to ME bus assemblies utilizing cables as the primary conductors.