FOA continues to provide practical, one-page standards for insertion loss, OTDR testing, optical power measurement, and connector inspection. Using outdated methods can lead to compliance issues and. The April 2026 publication period marks a significant step forward for the electrical engineering industry, with the release of five pivotal standards. These updates span vital topics, including innovative composite insulators with embedded optical fibres and a comprehensive suite of requirements. The Optical Time Domain Reflectometer (OTDR) will be used to test splice loss and to conduct span analysis. An Optical Power Meter and Laser Light Source will be used to measure power loss on each completed ring or distribution span to verify continuity between fibers (no fibers incorrectly spliced. The construction, mechanical, electrical, and optical performance, installation guidelines, acceptance criteria, test requirements, environmental considerations, and accessories for a nonmetallic, all-dielectric self-supporting (ADSS) fiber optic cable are covered by this standard. The ADSS cable. Aerial Bundled Cable (ABC), also known as Service-Insulated Power (SIP) cable or collectively insulated overhead cable, is an overhead power transmission solution consisting of multiple insulated conductors twisted together.