Fig. 22
Fig. 23
Fig. 24
Adhesive tape (“friction tape”) is wrapped around the joint, [Fig. 24], and pressed firmly together so that there is no chance of its unravelling. The tape wrapping should extend across the joint and on to about a half inch of the insulation around each wire.
Running the Wires.
To detail all the operations of installing a complex system of bell, alarm and annunciator wires would be impossible from the reasons that conditions vary and space is limited. General directions will then only be given to enable the inexperienced to run such wires as may be needed in ordinary domestic work and to guard against the most common causes of failure.
Wires may be run in tin tubes to prevent the depredations of rats and mice, or they may be run with simply their own covering for protection; it is presumed the latter is undertaken.
In a case where the building is of frame and in course of erection the task is much simplified.