Auxiliary Gutters Definition
Articles 376 and 378 focus on wireways not auxiliary gutters.
Auxiliary gutters definition. Figuring the 20 is easy for example. Nowhere 30 ft is the maximum length for any auxiliary gutter. I get a lot of calls to make sure that the gutter that they are using is up to code. We are allowed by code to fill a gutter to 20.
Metallic auxiliary gutters and metal wireways and covered by the same ul category beginning on page 605 of the 2014 ul white book and use the same product standard ul 870. Articles 386 and 388 cover surface raceways not auxiliary gutters. Marked as suitable for the purpose. Articles 386 and 388.
Auxiliary gutters used to supplement wiring spaces at meter centers distribution centers switchboards and simi lar points of wiring systems may enclose conductors or bus bars but shall not be used to enclose switches overcurrent devices or other appliances or apparatus. Extreme cold may cause nonmetallic auxiliary gutters to become brittle and therefore more susceptible to damage from physical contact. A sheet metal enclosure used to supplement wiring spaces at meter centers distribution centers switchboards and similar points of wiring systems. Sheet metal auxiliary gutters.
My interpretation of an auxiliary gutter is a gutter made for and attached to the sides of an enclosure and they are always installed as a system with the cabinet. Sheet metal auxiliary gutters shall be permitted for indoor and outdoor use. The auxiliary gutter definitions indicate they are used to supplement space at other equipment. Auxiliary gutters can be used to supplement wiring spaces at meters switchboards and similar places as well as enclosed conductors or busbars.
Of its interior cross sectional area 366 22 a b this is for both sheet metal and nonmetallic gutters. What many people call a gutter in the field is probably actually a wireway. Sizing a gutter for the proper fit is relatively easy. A wireway by definition is installed as a separate system from the panel cabinet or other enclosure.
Sheet metal auxiliary gutters can be used outdoors or indoors.