| 摘要 |
A thruway electrical outlet box system of the type that will extend entirely through an internal wall of a building and present on the opposite surfaces of that wall an opening for an outlet plug or switch mounting is disclosed. The outlet boxes of the present system are fabricated from electrically nonconductive, engineering grade plastic materials having mechanical and physical properties suitable for electrical applications. Each electrical outlet box includes an internal, central partition that separates back-to-back compartments which open onto the opposed wall surfaces. The present system includes outlet boxes of various configurations ranging from a pair of single outlet boxes to a pair of quadruple outlet boxes and combinations thereof. The overall length of the electrical outlet boxes is made adjustable by the inclusion of break-away extension members integrally formed about peripheral edges of the opposed compartment openings to accommodate various thicknesses of plaster and wallboard construction. The electrical outlet boxes of the present system permit a pair of multiple outlets in different rooms to be installed for the approximate cost of labor and material of a single outlet.
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