300.5(D)(1) Direct-Buried Cables Emerging From Grade

[snicholson]

300.5(D)(1) says that when a direct-buried cable emerges from below grade to above grade that the raceway is not required to extend more than 18" below grade. Is 18" the minimum depth required since TABLE 300.5 Column 1 cables minimum depth allowed is always 18" or more? Or is there a minimum depth required below grade? And does the depth matter pending on the type of raceway being used?

 

[infinity]

18" is the maximum when the minimum raceway burial depth is 24". If the required minimum burial depth is 18" or less then the raceway must go down to the minimum cover depth from T300.5.

300.5(D)(1) Emerging from Grade. Direct-buried conductors and
cables emerging from grade and specified in columns 1 and
4 of Table 300.5 shall be protected by enclosures or race-
ways extending from the minimum cover distance below
grade required by 300.5(A) to a point at least 2.5 m (8 ft)
above finished grade. In no case shall the protection be
required to exceed 450 mm (18 in.) below finished grade.

 

[snicholson]

Ahhh. Thank you!