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2. Cable gland - Wikipedia

   en.wikipedia.org/wiki/Cable_gland

   A cable gland provides strain-relief and connects by a means suitable for the type and description of cable for which it is designed—including provision for making electrical connection to the armour or braid and lead or aluminium sheath of the cable, if any.

3. Bushing (electrical) - Wikipedia

   en.wikipedia.org/wiki/Bushing_(electrical)

   In electric power, a bushing is a hollow electrical insulator that allows an electrical conductor to pass safely through a conducting barrier such as the case of a transformer or circuit breaker without making electrical contact with it. Bushings are typically made from porcelain, though other insulating materials are also used.

4. Cable management - Wikipedia

   en.wikipedia.org/wiki/Cable_management

   Cable strain relief is a mechanical protection for flexible electrical cables, wires, conduits and pneumatic hoses. It is regulated by the European standard EN 62444 (formerly EN 50262. [2]). With a strain relief component, the connection between a flexible electrical line and its connection port is protected against mechanical stress. Usually ...

5. Underwriter's knot - Wikipedia

   en.wikipedia.org/wiki/Underwriter's_knot

   The knot is typically used as a stopper knot where a lamp or appliance cord passes through a hole or slot of a plug or socket. Its purpose is to "reduce strain on the screw terminal connections—where the metal parts of the wires connect to the socket or plug—and prevent the wires from pulling free." [4]

6. Strain insulator - Wikipedia

   en.wikipedia.org/wiki/Strain_insulator

   In practice, for radio antennas, guy-wires, overhead power lines and most other loads, the strain insulator is usually in physical tension. [1] When the line voltage requires more insulation than a single insulator can supply, strain insulators are used in series: A set of insulators are connected to each other using special hardware. The ...

7. Twist-on wire connector - Wikipedia

   en.wikipedia.org/wiki/Twist-on_wire_connector

   In 1914, he produced a set-screw version, the forerunner of the present-day twist-on connector used throughout North America. Ceramic twist-on connectors from the beginning of the 20th century "Electric Wire Connecter" U.S. patent 1,583,479, Filed March 3, 1923, Patented May 4, 1926; Patent Drawing by W. P. MARR