Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 321
or ordinary low potentialsthis fuse is desirable for currents up to25 amperes; but it is a debatable ques-tion whether it is desirable to use an en-closed fuse for heavier currents. Fig. 59shows a cut-out box with Edison plugfuse-blocks used with knob and tube wiring. It will be seen thatthere is… … Fig. 56. Poicelaiu Cut-Out Block Courtesy ofOeneral Elect ricCo., Schenectady, N. Y. ^ A -^^ / ^ Fig. 57. Enclosed or ■•Cartridge Fuse. inet having a con-nection compart-ment. As will beseen from the cut,the tablet itself issurrounded on thefour sides by slate,which is secured in the corners by…
Architecture · Building · Carpentry
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