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  2. 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.

  3. Storage water heater - Wikipedia

    en.wikipedia.org/wiki/Storage_water_heater

    A storage water heater, or a hot water system ( HWS ), is a domestic water heating appliance that uses a hot water storage tank to maximize water heating capacity and provide instantaneous delivery of hot water. [1] Conventional storage water heaters use a variety of fuels, including natural gas, propane, fuel oil, and electricity.

  4. Uniform Plumbing Code - Wikipedia

    en.wikipedia.org/wiki/Uniform_Plumbing_Code

    IAPMO. Designated as an American National Standard, the Uniform Plumbing Code ( UPC) is a model code developed by the International Association of Plumbing and Mechanical Officials ( IAPMO) to govern the installation and inspection of plumbing systems as a means of promoting the public's health, safety and welfare.

  5. Tankless water heater - Wikipedia

    en.wikipedia.org/?title=Tankless_water_heater&...

    Language links are at the top of the page across from the title.

  6. New $20 minimum wage for fast food workers in ... - AOL

    www.aol.com/news/20-minimum-wage-fast-food...

    Beam reported from Sacramento, California. Most fast food workers in California will be paid at least $20 an hour beginning Monday when a new law is scheduled to kick in giving more financial ...

  7. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    The main disadvantage is their much higher initial costs; a US study in Minnesota reported a 20- to 40-year payback for the tankless water heaters. [citation needed] In a comparison to a less efficient natural gas fired hot water tank, on-demand natural gas will cost 30% more over its useful life. [dubious – discuss] [citation needed]

  8. Recycling codes - Wikipedia

    en.wikipedia.org/wiki/Recycling_codes

    Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process. The presence on an item of a recycling code, a chasing arrows logo, or a resin code , is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.

  9. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.

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