Auxiliary Gutter Fill

Table 1 wireway size cross section in2 max.

Auxiliary gutter fill.

Where subject to severe physical damage. However field people seldom determine the conductor fill requirements for a surface metal or nonmetallic raceway article 352 a metal or nonmetallic wireway article 362 or the wire space for a cabinet or cutout box article 373. Cable size size of conductors table 2 allowable cable area in2 1. The raceway fill calculator finds the minimum raceway and wireway and auxiliary gutter sizes.

Auxiliary gutters shall not contain more than 30 conductors at any cross section unless the additional conductors are for signal 01 control circuits. No other gutter cover screen or guard system works as effectively to keep debris from entering the gutter. The sum of the cross sectional areas of all contained conductors at any cross section of an auxiliary gutter shall not exceed 20 of the interior cross sectional area of the gutter. And 20 of that is 7 2 sq.

If you have a 6 x 6 gutter that would have total of 36 sq. Product comes in 4 ft. In of space to use. It also includes a custom fill selector so any percent fill can be selected for those jobs where the specs specify more stringent fill than the nec requires.

We are allowed by code to fill a gutter to 20. Splices and taps shall not fill the wireway to more than 75 percent of its area at the point of a splice or tap. Thirteen types of raceways can be selected. 36 x 20 7 2 sq.

Below is a preview of article 376. Where subject to severe corrosive environments. Sections made from polyether outdoor durable foam this lightweight insert won t crumble dent bend or cave in allowing for satisfied customers. Of its interior cross sectional area 366 22 a b this is for both sheet metal and nonmetallic gutters figuring the 20 is easy for example.