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  2. Cable reel - Wikipedia

    en.wikipedia.org/wiki/Cable_reel

    A cable reel is a round, drum-shaped object such as a spool used to carry various types of electrical wires. [1] Cable reels, which can also be termed as drums, have been used for many years to transport electric cables, fiber optic cables [2] and wire products. Cable reels usually come in four different types, each with their own uses: wood ...

  3. Driven and parasitic elements - Wikipedia

    en.wikipedia.org/wiki/Driven_and_parasitic_elements

    Yagi antenna with one driven element (A) called a folded dipole, and 5 parasitic elements: one reflector (B) and 4 directors (C). The feed line leading to the receiver is not shown; it attaches to the driven element at D. The antenna radiates radio waves in a beam toward the right.

  4. Cable gland - Wikipedia

    en.wikipedia.org/wiki/Cable_gland

    Shrouded cable glands going into a flow meter. Split cable gland KVT for routing pre-terminated cables. A cable gland (more often known in the U.S. as a cord grip, cable strain relief, cable connector or cable fitting) is a device designed to attach and secure the end of an electrical cable to the equipment. [1]

  5. Reel - Wikipedia

    en.wikipedia.org/wiki/Reel

    Tow trucks hold steel cable on reels; Rope, wire and electrical cable is often supplied on reels; Badge reels are used to hold access badges, smart cards and other externally tethered small items such as keys and clippers; A cave diving reel is a safety equipment used for running a distance line [1]

  6. Moxon antenna - Wikipedia

    en.wikipedia.org/wiki/Moxon_antenna

    Moxon antenna for the 20-meter band.The antenna is the faint rectangle of wires held in tension by the bent X-shaped support frame. Moxon antenna for the 2-meter band. The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. [1]

  7. Ground and neutral - Wikipedia

    en.wikipedia.org/wiki/Ground_and_neutral

    A ground conductor only carries significant current if there is a circuit fault that would otherwise energize exposed conductive parts and present a shock hazard. In that case, circuit protection devices may detect a fault to a grounded metal enclosure and automatically de-energize the circuit, or may provide a warning of a ground fault.

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