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  2. Stab-Lok - Wikipedia

    en.wikipedia.org/wiki/Stab-Lok

    After the 1979 sale of Federal Pacific Electric to Reliance Electric, a unit of Exxon Corporation, Reliance reported to the U.S. Consumer Product Safety Commission that the Stab-Lok breakers and panels did not meet the requirements published by Underwriters Laboratories, even though the products bore UL labels. The CPSC performed its own ...

  3. Federal Pacific Electric Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Pacific_Electric...

    1950: Registers STAB-LOK trademark in the United States. [13] 1951: Begins marketing the Stab-Lok line of panels and breakers under the Federal Electric Products (FEP) name. [16] [17] Note: It is unclear whether Federal Pacific bought FEP, or was a name change, or a successor company. It appears to be a name change, with "Federal (Pacific ...

  4. North American power transmission grid - Wikipedia

    en.wikipedia.org/wiki/North_American_power...

    Interconnections can be tied to each other via high-voltage direct current power transmission lines as well as containing internal DC connections such as the north-south Pacific DC Intertie, or with variable-frequency transformers (VFTs), which permit a controlled flow of energy while also functionally isolating the independent AC frequencies ...

  5. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    The NEMA 14 connectors are essentially the replacements for the older NEMA 10 connectors described above, but with the addition of a dedicated grounding connection. All NEMA 14 devices offer two hots, a neutral, and a ground, allowing for both 120 and 240 V when supplied by split-phase power , or 120 and 208 V if the supply is three-phase .

  6. MC4 connector - Wikipedia

    en.wikipedia.org/wiki/MC4_connector

    MC4 connectors are successors of the MC3 Connectors, which were developed by Multi-Contact in 1996. MC3 is the abbreviation of Multi-Contact and its size 3mm PV connector with 3 mm contact pin. MC3 had certification ratings of (1000VIEC/600V UL) and 30A (10AWG PV Cable). The MC3 connectors were discontinued in 2016.

  7. Grable & Sons Metal Products, Inc. v. Darue Engineering & Mfg.

    en.wikipedia.org/wiki/Grable_&_Sons_Metal...

    Grable & Sons Metal Products, Inc. v. Darue Engineering & Mfg., 545 U.S. 308 (2005), was a United States Supreme Court decision [1] involving the jurisdiction of the federal district courts under 28 U.S.C. § 1331 (federal question jurisdiction).

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