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  2. Mechanical systems drawing - Wikipedia

    en.wikipedia.org/wiki/Mechanical_systems_drawing

    Mechanical systems drawing is a type of technical drawing that shows information about heating, ventilating, air conditioning and transportation around the building (Elevators or Lifts and Escalator). [ 1] It is a powerful tool that helps analyze complex systems. These drawings are often a set of detailed drawings used for construction projects ...

  3. List of electronic color code mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_electronic_color...

    The first letter of the color code is matched by order of increasing magnitude. The electronic color codes, in order, are: The electronic color codes, in order, are: 0 = B lack

  4. 25-pair color code - Wikipedia

    en.wikipedia.org/wiki/25-pair_color_code

    Major and minor colors are chosen from two different groups of five, resulting in 25 color combinations. The color combinations are applied to the insulation that covers each conductor. Typically, one color is a prominent background color of the insulation, and the other is a tracer, consisting of stripes, rings, or dots, applied over the ...

  5. Electrical wiring - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring

    Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure. Wiring is subject to safety standards for design and installation. Allowable wire and cable types and sizes are specified according to the circuit operating voltage and electric ...

  6. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    Gas water heaters have an exhaust vent or one to two exhaust pipes on the top, and still require electric power for electronics, sensing and ignition. A three-phase, 21 kW, 400-volt tankless water heater in Europe, with new European color coding for three-phase power. There are also heaters that use several single-phase circuits instead.

  7. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Codes such as the UMC and IMC do include much detail on installation requirements, however. Other useful reference materials include items from SMACNA, ACGIH, and technical trade journals. American design standards are legislated in the Uniform Mechanical Code or International Mechanical Code. In certain states, counties, or cities, either of ...

  8. The Ecobee3 Lite is a decent smart thermostat that costs less ...

    www.engadget.com/2016-10-17-ecobee3-lite-review.html

    All are vying to provide consumers with smarter, simpler controls for home heating and cooling. The new Ecobee3 Lite isn't the company's first such device, but it does mark the brand's attempt to ...

  9. BMW i4 - Wikipedia

    en.wikipedia.org/wiki/BMW_i4

    The BMW Concept i4 was an evolution of the i Vision Dynamics design study from 2017. The proportions were classic coupé, featuring a long wheelbase, fastback roofline and short overhangs. The exterior design had been kept simple with its smooth lines and clear surfaces "as a deliberate counterpoint to the dynamic flair of the driving experience".

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