8/11/2017: Underground service conductors

Poll created by dvigstol Employee on Aug 11, 2017

Underground service conductors that are not encased in concrete and that are buried 450 mm (18 in.) or more below grade shall have their location identified by a warning ribbon that is placed in the trench at least ______ above the underground installation

Choose an option below to vote 4 total votes Show resultsShow voting options
  • 152 mm (6 in.)
    0
    Vote
  • 300 mm (12 in.)
    4
    Vote
  • 254 mm (10 in.)
    0
    Vote
  • 381 mm (15 in.)
    0
    Vote