OIL RESISTANT - Performance characteristics of a material against exposure to a specific oil.
OKOCORD® - Trade name for portable power cables made by Okonite Company.;
OKOPRENE® - Trade name for Neoprene® covered wire and cable made by Okonite. Neoprene® is a trademark of the DuPont de Nemours Co.
OPEN WIRE - Synonymous with overhead line. A conductor that is not surrounded by insulation and is supported separately above ground.
OPER. - Abbreviation for operating.
OPTICAL RECEIVER - Unit for converting optical signals into electrical signals.
OPTICAL TIME DOMAIN REFLECTOMETER - An instrument that measures transmission characteristics of fiber by sending a pulse of light down the fiber and measuring the light scattered across the length and reflected back from the end as a function of time. Used to measure attenuation, point discontinuities, and fiber length, as well as to find breaks.
OPTICAL TRANSMITTER - Unit for converting electrical signals into optical signals.
OSHA - Abbreviation for Occupational Safety and Health Act.
OUTGASSING - The dissipation of gas from a dielectric evidencing decomposition.
OVERCOAT - Individual strands of tin copper wire stranded together and then covered with a tin coating.
OVERHEAD LINE - Synonymous with open wire. A conductor that is not surrounded by insulation and is supported separately above ground.
