Cable shears
A cable cutter , often called cable cutter is a two-limbed tool for cutting cables . The principle used here is that of shear cutting . Cable shears are important tools for work in electrical installation.
While individual wires or isolated individual conductors can often be cut with side cutters , the cutting of multi-part cables with larger cross-sections requires the use of cable scissors with the shear-cutting principle. These largely prevent the cable from being squeezed together, which would increase the pressure to be applied and thus the manual force to be applied to an unacceptable level by increasing the contact surfaces of the cutting edge and material. (With the same pressure , the quotient of force and area is always constant). In addition, cable shears have comparatively small cutting angles and sharp cutting edges, which enable easier penetration into the mostly softer materials in cables such as copper and aluminum . Their cutting edges are therefore unsuitable for cutting hard materials.
In addition to simple cable shears, which cut cables in one go, cable shears with a ratchet drive are also used. These allow even larger cross-sections to be cut by adding different cutting steps, each with a very high gear ratio . Cable cutters over 20 cm in length usually have to be operated with two hands. Electrically powered cable shears are also used for continuous use today.
Technically, wire cutters work in a similar way to cable cutters . The latter, however, are designed for harder material, for example wire ropes for fastening purposes , Bowden cables or twisted tire cord and accordingly have harder cutting edges and more obtuse cutting edge angles.
