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 Article 376 (362 in 1999 NEC) Page 3 of 3
 Metal Wireways 376.23 Wireway Sizing This section was revised to read: (B) Wireway Used as Pull Box. Where insulated conductors 4 AWG or larger are pulled through a wireway, the distance between raceway and cable entries enclosing the same conductor shall not be less than required by 314.28. Figure 376-2 Intent: This rule was revised to clarify that when a wireway is used as a pullbox for conductors 4 AWG and larger, it must be sized as a pullbox in accordance with 314.28 as follows: Straight pulls, the minimum distance from where the conductors enter to the opposite wall must not be less than 8 times the trade size of the largest raceway 314.28(A)(1)]. Angle pulls, the distance from the raceway entry to the opposite wall must not be less than 6 times the trade diameter of the largest raceway, plus the sum of the diameters of the remaining raceways on the same wall and row [314.28(A)(2)]. U Pulls, when conductor enters and leaves from the same wall, the distance from where the raceways enter to the opposite wall must not be less than 6 times the trade diameter of the largest raceway, plus the sum of the diameters of the remaining raceways on the same wall and row [314.28(A)(2)]. The distance between raceways enclosing the same conductor shall not be less than 6 times the trade diameter of the largest raceway, measured from raceway edge to edge [314.28(A)(2)]. Figure 376-2 Click on Image to Enlarge