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  2. American wire gauge - Wikipedia

    en.wikipedia.org/wiki/American_wire_gauge

    A standard wire gauge. American Wire Gauge (AWG) is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous, electrically conducting wire.

  3. Thermoplastic-sheathed cable - Wikipedia

    en.wikipedia.org/wiki/Thermoplastic-sheathed_cable

    White: 14 AWG wire (2.08 mm 2) for 15-amp circuits Yellow: 12 AWG wire (3.31 mm 2) for 20-amp circuits Orange: 10 AWG wire (5.26 mm 2) for 30-amp circuits Black: 6 or 8 AWG wire (13.3 mm 2 or 8.37 mm 2) for 60- and 45-amp circuits, respectively Grey: usage for underground installations, designated as "underground feeder" (UF) cables [4]

  4. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    There were two ⌀3.2 mm negative pins spaced 9.5 mm apart and two ⌀4.0 mm positive pins spaced 14.3 mm apart. Negative and positive pins were spaced 18.1 mm apart. It was used in some early transistor radio amplifiers with a Class B output stage, allowing the loud speaker to be connected between the amplifier output and the battery center tap.

  5. NEMA size - Wikipedia

    en.wikipedia.org/wiki/NEMA_size

    8: 1215-450: 900 9: 2250-800: 1600 See also. Contactor; Motor starter; References This page was last edited on 20 June 2020, at 20:42 ...

  6. Electrical wiring in North America - Wikipedia

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

    Common 3 phase configurations within a building are 208v/120 wye, 120/240 center tapped delta and 480v/277v wye. Lighting is usually fed by 277 V or 120v. Countries such as Mexico may adopt the NFPA standard as their national electrical code, with local amendments similar to those in United States jurisdictions.

  7. Power over Ethernet - Wikipedia

    en.wikipedia.org/wiki/Power_over_Ethernet

    Common 100 Mbit/s passive applications use the pinout of 802.3af mode B (see § Pinouts) – with DC positive on pins 4 and 5 and negative on 7 and 8, and data on 1 and 2, and 3 and 6, but polarization may vary. Gigabit passive injectors use a transformer on the data pins to allow power and data to share the cable and are typically compatible ...

  8. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    The addition is a 3 ⁄ 16-inch (4.8 mm) diameter round or U-shaped ground pin, 1 ⁄ 8 in (3.2 mm) longer than the power blades (so the device is grounded before the power is connected) and located from them by 1 ⁄ 4 in (6.4 mm) edge-to-edge or 15 ⁄ 32 in (11.9 mm) center-to-center.

  9. National Electrical Code - Wikipedia

    en.wikipedia.org/wiki/National_Electrical_Code

    AFCI devices generally replace the circuit breaker in the circuit. As of the 1999 National Electrical Code, AFCI protection is required in new construction on all 15- and 20-amp, 125-volt circuits to bedrooms. [11]

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