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Learn all about locating and marking in the power utility industry.


Electrical Power Utility Locating

Know where to dig! The 3M™ Electronic Marker System (EMS)  helps save electric utilities time and money by enabling field crews to quickly pinpoint the location of underground electric facilities, including cable runs, splices, vaults, conduits and road crossings. 3M also offers wide product support and service for increased safety, performance and reliability. EMS markers used for underground electric cable location are color-coded to APWA standards for visual reference and power utilities have their own frequency, helping reduce the risk of accidentally locating and excavating other underground electric facilities. For power utilities, all underground electric cable markers are red in color.

3M EMS Power series can be used to locate: 

  • Service drops
  • Buried transformers and splices
  • Street lighting
  • Distribution loops
  • Conduit stubs
  • Service laterals
  • Manhole covers
  • Utility and road crossings

Interactive Locating and Marking Guide for the Power Industry
View PDF Version of this guide (PDF, 273 KB)

Our interactive application guide shows you where 3M Locating & Marking products are applied in commercial and residential spaces and why they’re better than conventional approaches.

  • 3M Locating & Marking Application Guide for the Power industry.
Wind and Solar Sites
  • Marker identifies the location of splices that connect the power generation units to the main hub
  • High value assets are critical to pinpoint connections for maintenance and to expand site
  • Markers provide improved reliability compared to tracer wire
Vegetation Management
Open Trench Construction
  • Markers installed inside handholes are used to locate splices and terminations along cable runs.
  • Environmental effects may cover handholes overtime and become difficult to locate. Markers can be found under vegetation, dirt, snow, etc.
Ball and Near Surface Markers
Path Marking
  • 3M™ EMS Caution Tape and Rope
  • For use in open trench and HDD (Horizontal Directional Drilling) applications
  • A maintenance free solution for marking and locating the path of underground plastic pipes and casing.

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