Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 316
et, and thislock-nut and bushing clamp the conduit securely in position. Fig. 396 66 ELECTRIC WIRIX(J 53 shows a terminal hushing for panel-hoxes used for flexi])le steel conduit or armored cahle. The Rides of ihe National Electric Code lecjuire that the metal of conduits shall h.e permanently and… … Kig. 51. Conduit Bushing.
Architecture · Building · Carpentry
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