Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 315
Fig. 49. Types of Floor Outlet-Boxes. Fiff. 50. ditions; but the types illustrated in these pages are characteristic andtypical forms. Bushings. The Rules of the Nati&nal Electric Code require thatconduits entering junction-boxes, outlet-boxes, or cut-out cabinets,shall be provided with…
Architecture · Building · Carpentry
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