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  2. Hot water storage tank - Wikipedia

    en.wikipedia.org/wiki/Hot_water_storage_tank

    Some manufacturers offer an extended warranty kit that includes a replacement anode rod. Because conventional hot water storage tanks can be expected to leak every 5 to 15 years, high-quality installations will include, and most US building/plumbing codes now require, a shallow metal or plastic pan to collect the seepage when it occurs.

  3. Galvanic anode - Wikipedia

    en.wikipedia.org/wiki/Galvanic_anode

    A galvanic anode, or sacrificial anode, is the main component of a galvanic cathodic protection system used to protect buried or submerged metal structures from corrosion. They are made from a metal alloy with a more "active" voltage (more negative reduction potential / more positive oxidation potential ) than the metal of the structure.

  4. Cathodic protection - Wikipedia

    en.wikipedia.org/wiki/Cathodic_protection

    Zinc sacrificial anode (rounded object) screwed to the underside of the hull of a small boat. Cathodic protection ( CP ; / k æ ˈ θ ɒ d ɪ k / ⓘ ) is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell . [ 1 ]

  5. Anode - Wikipedia

    en.wikipedia.org/wiki/Anode

    The terms anode and cathode are not defined by the voltage polarity of electrodes, but are usually defined by the direction of current through the electrode. An anode usually is the electrode of a device through which conventional current (positive charge) flows into the device from an external circuit, while a cathode usually is the electrode through which conventional current flows out of ...

  6. Groundbed - Wikipedia

    en.wikipedia.org/wiki/Groundbed

    In cathodic protection, the anode groundbed is the arrangement of anodes in the ground or water and it provides the path for protective current to leave the anodes and enter to electrolyte. [ 6 ] High voltage direct current systems

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