ASTM D1050 establishes specifications for rubber insulating line hose used to cover energized conductors and prevent accidental contact. It defines classifications by voltage and design, includes testing for dielectric strength and durability, and ensures proper marking for safe, effective use in electrical maintenance.
Line hose must undergo dielectric withstand tests and other physical property tests to ensure it provides adequate electrical insulation and can withstand typical field conditions. The standard also includes requirements for marking and traceability. ASTM D1050 is critical for ensuring the quality and safety of insulating line hose, a common tool for temporarily insulating energized lines during maintenance or repair.

