Abstract: In environments utilizing highly explosive or flammable materials and in hospital operating rooms, the use of isolated power and an equipotential grounding system is essential. The distribution of isolated power and an equipotential ground on the surface areas of such enivornments is accomplished by a duct which is essentially an extruded aluminum channel that fastens to the wall with mounting screws. The channel has a main body portion and a cover plate that snap fits to the body portion. The channel is adapted to be utilized in sections, each section being readily attachable to another section. A ground bus bar is carried in the channel to which all ground leads are directly connected. In an alternate embodiment, the duct is adaptable to effectively provide two separate channels by the insertion of a partition which is held in place by holding fingers.