Auxiliary Gutter Fill

Where subject to severe corrosive environments.

Auxiliary gutter fill. 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. And 20 of that is 7 2 sq. Now when determining gutter or wireway fill the sum of the cross sectional areas of all contained conductors and cables at any cross section shall not exceed 20 percent of the interior cross sectional area of the wireway. Table 1 wireway size cross section in2 max.

Splices and taps shall not fill the wireway to more than 75 percent of its area at the point of a splice or tap. The conductor fill requirements for a conduit or an outlet box are calculated in the field on a regular basis. The raceway fill calculator finds the minimum raceway and wireway and auxiliary gutter sizes. Where subject to severe physical damage.

We are allowed by code to fill a gutter to 20. Cable size size of conductors table 2 allowable cable area in2 1. Auxiliary gutters shall not contain more than 30 conductors at any cross section unless the additional conductors are for signal 01 control circuits. 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.

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. Product comes in 4 ft. Below is a preview of article 376. In of space to use.

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. If you have a 6 x 6 gutter that would have total of 36 sq. No other gutter cover screen or guard system works as effectively to keep debris from entering the gutter. 36 x 20 7 2 sq.