Distribution Line 2 topics · 2 sources ScienceEnergyOne or more circuits of a distribution system on the same line or poles or supporting structures' usually operating at a lower voltage relative to the transmission line.US DOE Office of Energy Efficiency & Renewable Energy — Glossary of Energy-Related Terms retrieved 2014-05-26 Cite ScienceWaterLow voltage electric power line, usually 69 kilovolts or less. Bureau of Reclamation — Bureau of Reclamation Glossary Cite