Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 49. Types of Floor Outlet-Boxes. Fig. 50. ditions; but the types illustrated in these pages are characteristic andtypical forms. Bushings. The Rules of the National Electric Code require thatconduits entering junction-boxes, outlet-boxes, or cut-out cabinets-shall be provided with approved bushings, fitted to protect the wirefrom abrasion. Fig. 51 shows a typical form of conduit bushing. This bushingis screwed on the end of the conduit after the latter has been intro-duced into the outlet-box, cut-out cabinet, etc
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 49. Types of Floor Outlet-Boxes. Fig. 50. ditions; but the types illustrated in these pages are characteristic andtypical forms. Bushings. The Rules of the National Electric Code require thatconduits entering junction-boxes, outlet-boxes, or cut-out cabinets-shall be provided with approved bushings, fitted to protect the wirefrom abrasion. Fig. 51 shows a typical form of conduit bushing. This bushingis screwed on the end of the conduit after the latter has been intro-duced into the outlet-box, cut-out cabinet, etc., thereby forming aninsulated orifice to protect the wire at the point where it leaves theconduits, and to prevent abrasion, grounds, short circuits, etc. Alock-nut (Fig. 52) is screwed on the threaded end of the conduit beforethe conduit is placed in the outlet-box or cut-out cabinet, and thislock-nut and bushing clamp the conduit securely in position. Fig. 355 06 ELECTRIC WIRING
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