Page 134 - Pipeline Rules of Thumb Handbook

Electrical Design 121

Table 3A
Maximum Number of Conductors in Trade Sizes of Conduit or Tubing
(Based on N.E.C. Table 1, Chapter 9)

Note: This table is for concentric stranded conductors only. For cables with compact conductors, the dimensions in N.E.C.
Table 5A shall be used.
Table 3B
Maximum Number of Conductors in Trade Sizes of Conduit or Tubing (Based on Table 1, Chapter 9)

Note: This table is for concentric stranded conductors only. For cables with compact conductors, the dimensions in N.E.C.
Table 5A shall be used.
Reprinted with permission from NFPA 70-1990, The National Electrical Code®, Copyright © 1988, National Fire
Protection Association, Quincy, MA 02269. This reprinted material is not the complete and official position of the National
Fire Protection Association, on the referenced subject which is represented only by the standard in its entirety.