Knockout arrangement providing connection pattern choice on...

H - Electricity – 02 – G

Patent

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Details

H02G 3/08 (2006.01) H02G 3/14 (2006.01) H02M 3/08 (2006.01)

Patent

CA 2210777

KNOCKOUT ARRANGEMENT PROVIDING CONNECTION PATTERN CHOICE ON ELECTRICAL JUNCTION BOX AND COVER PLATE ARRANGEMENT FOR MOUNTING DYNAMIC LOADS ABSTRACT OF THE DISCLOSURE A knockout arrangement for an electrical junction box includes a housing having at least one side wall being substantially planar, a pair of spaced apart first knockout structures on the side wall with the first knockout structures defining a first circular knockout and a second annular knockout surrounding and containing the first circular knockout, the first and second knockouts having centers spaced apart such that the second knockout is defined in eccentric relation to the first knockout and the first and second knockouts of each knockout structure are adapted to be selectively removed to create a trade size opening for passage of a conduit of either of two sizes through the side wall, and a second knockout structure disposed on the side wall between and spaced apart from the first knockout structures and containing only the first knockout. The housing further has a plurality of the side walls with an opposing pair of the side walls having a plurality of spaced apart coplanar mounting ears respectively disposed adjacent opposite ends of the opposing side walls for attachment of a cover plate having corresponding mounting holes or slots to the housing for mounting of a dynamic load to the cover plate.

Agencement de pastilles défonçables pour une boîte de jonction électrique comprenant un boîtier dont au moins une paroi latérale est essentiellement planaire et une première paire de structures à pastilles défonçables espacées sur la paroi latérale, soit une pastille défonçable circulaire et une pastille défonçable annulaire qui entoure la pastille défonçable circulaire. La pastille défonçable annulaire est décentrée par rapport à la pastille défonçable circulaire de façon que les deux types de pastilles de chaque structure permettent le défonçage sélectif afin de créer une ouverture de dimensions commerciales pour le passage d'un conduit d'un de deux diamètres à travers la paroi latérale. Une deuxième structure à pastille défonçable est disposée sur la paroi latérale, au milieu de la première paire de structures à pastilles défonçables, et elle ne comprend qu'une seule pastille circulaire. De plus, le boîtier a plusieurs parois latérales, une paire de parois latérales opposées ayant plusieurs languettes coplanaires, disposées respectivement aux extrémités opposées des parois latérales opposées et servant à la fixation d'une plaque-couvercle ayant des trous ou des fentes de montage correspondants et permettant le montage d'une charge dynamique.

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