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The 3M 7000031679 is a underground barricade warning tape from the Scotch 300 Series, designed to mark the location of buried electric lines during excavation and trenching work. Bold 2-inch black characters are printed on a bright background to provide a clearly visible warning message to anyone digging near the buried utility. This tape is installed by electricians, utility contractors, and site crews during conduit or direct-burial cable installation to reduce the risk of accidental line strikes during future excavation.
This buried warning tape is suited for residential and commercial electrical installations where direct-burial conductors, conduit runs, or service laterals are placed underground. It is laid in the trench above the buried line during backfill operations, providing a persistent visual indicator to future excavators. The tape is part of the 3M Scotch 300 Series, an economical line of barricade and detectable marking tapes used across utility and construction trades.
Designed as an OEM-style underground warning tape for burial above direct-burial electrical cables, conduit runs, and service laterals in residential and commercial trenching applications.
Installation is typically performed by licensed electricians or utility contractors during conduit or direct-burial cable work. The tape is placed in the trench during backfill, positioned above the buried line at a depth that allows detection before the line is reached by future digging. Always follow local codes and NEC requirements for underground installation depth and marking. De-energize any existing circuits in the work area before beginning trench work.
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