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1.4: Solderless connectors

  • Page ID
    3532
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    • Contributed by Camosun College
    • Sourced from BCCampus (Download for free at http://open.bccampus.ca/find-open-textbooks)

    Solderless connectors

    Soldering is the recommended way to splice, tap, or join wires to make a rigid, permanent connection that is weather-resistant. The process of soldering can be time consuming, awkward, restrictive, and expensive.

    In many applications, soldering has been replaced by special connecting devices that simplify wire joining procedures. Solderless connectors are used on both wire and cable connections. Types of solderless connectors include:

    • looped-end
    • twist-on
    • set-screw
    • crimp-on

    Looped-end connectors

    The most common solderless connection has the looped end of a wire (Figure 8) held in place by a set-screw at an electrical terminal (Figure 9). Note that the direction of the loop is the same as the direction the screw is turned when it is tightened (clockwise). The screw and washer should be made of corrosion-resistant materials such as copper or brass.

    goodHook.jpg
    Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    1. Good loop (also known as a hook)
      properInstallation.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    2. Proper installation under terminal screw
      twistedTogether.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
      twistOn3.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    3. Completed connection
      wingedConnector.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    4. Winged connector
      twistOnConnectors.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    5. Twist-on connectors end view showing metal inserts
      setScrewConnector.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    6. Set-screw connector
      twoPartCrimpOnConnectors.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    7. Two-part crimp-on connector
      onePartCrimpOnConnectors.jpg
      Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    8. One-part crimp-on connectors

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