Direct-Buried Cables

Status
Not open for further replies.
Table 300.50 Minimum Cover requirements for over 22kV - 40kv column 1 Direct-Buried Cables 36" (minimum) seems to conflict with Figure 310.60 Note: "maximum depth to direct-buried cables shall be 900mm (36 in.). Please clarify/explain the discrepancy. Thanks.
 

david luchini

Moderator
Staff member
Location
Connecticut
Occupation
Engineer
Figure 310.60 shows you the conditions of use for Tables 310.60(C)(77) through (86). It is not suggesting that cables cannot be buried deeper than 36".

Section 310.60(C)(2) tells you how to adjust the ampacity given in those tables when the burial depth is increase beyond the 36".
 
Status
Not open for further replies.
Top