Things a Boy Should Know About Electricity / Second Edition

by Thomas M. St. John

Fig. 166.

Fig. 167.

Fig. 160 shows a form of porcelain cleat. These are fastened to ceilings or walls, and firmly hold the insulated wires in place. Fig. 161 shows a wood cleat. Fig. 162 shows small porcelain insulators. These may be screwed to walls, etc., the wire being then fastened to them. Fig. 163 shows how telegraph wires are supported and insulated. Fig. 164 shows how wires may be carried by tree and insulated from them.

Fig. 168.

Fig. 169.

Fig. 170.