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  2. Appliance classes - Wikipedia

    en.wikipedia.org/wiki/Appliance_classes

    A fault in the appliance which causes a live conductor to contact the casing will cause a current to flow in the earth conductor. If large enough, this current will trip an over-current device (fuse or circuit breaker [CB]) and disconnect the supply.

  3. Thermal cutoff - Wikipedia

    en.wikipedia.org/wiki/Thermal_cutoff

    They are found in virtually every refrigerator, microwave, clothes dryer, space heater, and many more appliances found throughout the home. Another type of thermal switch is a PTC (Positive Temperature Coefficient) thermistor ; these thermistors have a "cutting off" temperature at which the resistance suddenly rises rapidly, limiting the ...

  4. DIN rail - Wikipedia

    en.wikipedia.org/wiki/DIN_rail

    The width of devices that are mounted on a 35 mm "top hat" DIN rail generally use "modules" as a width unit, one module being 18 mm wide. For example, a small device (e.g. a circuit breaker) may have a width of 1 module (18 mm wide), while a larger device may have a width of 4 modules (4 × 18 mm = 72 mm).

  5. Skin effect - Wikipedia

    en.wikipedia.org/wiki/Skin_effect

    Skin depth, δ, is defined as the depth where the current density is just 1/e (about 37%) of the value at the surface; it depends on the frequency of the current and the electrical and magnetic properties of the conductor. Induction cookers use stranded coils to reduce heating of the coil itself due to skin effect. The AC frequencies used in ...

  6. 6 Best Appliance Deals at Costco This July - AOL

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  7. Electrical contact - Wikipedia

    en.wikipedia.org/wiki/Electrical_contact

    Contact force or pressure increases the size of the a-spot which decreases the constriction resistance and the electrical contact resistance. [11] When the size of contacting asperities becomes larger than the mean free path of electrons, Holm-type contacts become the dominant transport mechanism, resulting in a relatively low contact resistance.

  8. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    General Electric "Monitor-Top" refrigerator, introduced in 1927, priced at $525, with the first all-steel cabinet, designed by Christian Steenstrup [24] The first refrigerator to see widespread use was the General Electric "Monitor-Top" refrigerator introduced in 1927, so-called, by the public, because of its resemblance to the gun turret on ...

  9. Ring main unit - Wikipedia

    en.wikipedia.org/wiki/Ring_main_unit

    It includes in one unit two switches that can connect the load to either or both main conductors, and a fusible switch or circuit breaker and switch that feed a distribution transformer. [1] The metal enclosed unit connects to the transformer either through a bus throat of standardized dimensions, or else through cables and is usually installed ...

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