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2. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   Many tankless units have fully modulating gas valves that range from as low as 10,000 to over 1,000,000 BTUs. [clarification needed] Most electrical tankless heaters require AWG 10 or 8 wire, corresponding to 5.5 or 8.5 mm 2 for typical POU (point of use) heaters at North American voltages. Larger whole-house electric units may require up to ...

3. Single-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Single-phase_electric_power

   Single-phase distribution is used when loads are mostly lighting and heating, with few large electric motors. A single-phase supply connected to an alternating current electric motor does not produce a rotating magnetic field; single-phase motors need additional circuits for starting (capacitor start motor), and such motors are uncommon above ...

4. Electrical wiring in North America - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring_in_North...

   Furnaces, electric water heaters, heat pumps, central air conditioning units, electric dryers, electric stoves or cooktops, and built-in microwave ovens must be on dedicated circuits. The code provides rules for sizing electrical boxes for the number of wires and wiring devices in the box.

5. Home wiring - Wikipedia

   en.wikipedia.org/wiki/Home_wiring

   Power and telecommunication services generally require entry points into the home and a location for connection equipment. For electric power supply, a cable is run either overhead or underground into a distribution board in the home. A distribution board, or circuit breaker panel, is typically a metal box mounted on a wall of the home.

6. Mains electricity - Wikipedia

   en.wikipedia.org/wiki/Mains_electricity

   4 Includes small electric devices, heating elements, exterior lights, outdoor grills, pool and spa heaters, backup electricity generators, and motors not listed above. Does not include electric vehicle charging. Electronic appliances such as computers or televisions sets typically use an AC to DC converter or AC adapter to power the device ...

7. Split-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Split-phase_electric_power

   In the United Kingdom, electric tools and portable lighting at larger construction and demolition sites are governed by BS 7375, and where possible are recommended to be fed from a centre-tapped system with only 55 V between live conductors and the earth (so-called CTE or centre-tap earth, or 55–0–55). This reduced low-voltage system is ...