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  2. Zinsco - Wikipedia

    en.wikipedia.org/wiki/Zinsco

    T&B then continued to fabricate and sell the breakers under their own label, tripling the price at that time, from about $7.00 for the popular R-38 twin breaker to $19.00. T&B would eventually close the Zinsco circuit breaker production altogether in 2005. Today, Connecticut Electric continues making Zinsco replacement aluminum bus kits and ...

  3. Earth-leakage protection device - Wikipedia

    en.wikipedia.org/wiki/Earth-leakage_circuit_breaker

    An earth-leakage protection device is a safety device used in electrical installations to prevent shock. It consists of either a current sensing mechanism, or a voltage sensing mechanism. Such devices may be found in the form of either a circuit breaker , known as an earth-leakage circuit breaker ( ELCB ), or built into a socket (aka receptacle ) .

  4. Service drop - Wikipedia

    en.wikipedia.org/wiki/Service_drop

    A 240/120 V split-phase service drop providing power to a residence in USA. The three wires from the utility pole enter through a weatherhead (top) into a vertical conduit, which routes them to the electric meter (bottom). From there they pass through the wall of the house to the electric panel and Main Fuses or Circuit Breakers inside.

  5. List of electrical and electronic measuring equipment

    en.wikipedia.org/wiki/List_of_electrical_and...

    Capacitance meter: Measures the capacitance component Current clamp: Measures current without physical connection Curve tracer: Applies swept signals to a device and allows display of the response Cos Phi Meter: Measures the power factor Distortionmeter: Measures the distortion added to a circuit Electricity meter: Measures the amount of energy ...

  6. Electrical wiring in North America - Wikipedia

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

    Terminals for the neutral (grounded) conductor in general, and for receptacles, plugs, and connectors specifically, are required to be substantially white in color [NEC 200.9, NEC 200.10 (B)], and if the terminal itself is not visible, the hole leading to it must be marked with the word "white" or the letter "W".

  7. Utility submeter - Wikipedia

    en.wikipedia.org/wiki/Utility_submeter

    A submetering system typically includes a "master meter", which is owned by the utility supplying the water, electricity, or gas, with overall usage billed directly to the property owner. The property owner or manager then places their own private meters on individual tenant spaces to determine individual usage levels and bill each tenant for ...

  8. Utility meter - Wikipedia

    en.wikipedia.org/wiki/Utility_meter

    A utility meter is any of the following metering devices used on utility mains: Electricity meter , a device for measuring electricity usage Smart meter , an electrical meter that records consumption of electric energy and communicates information to the utility for monitoring and billing

  9. Transient-voltage-suppression diode - Wikipedia

    en.wikipedia.org/wiki/Transient-voltage...

    Maximum reverse standoff voltage: the voltage below which no significant conduction occurs. Breakdown voltage : the voltage at which some specified and significant conduction occurs. Clamping voltage : the voltage at which the device will conduct its fully rated current (hundreds to thousands of amperes ).

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