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2. Breaking capacity - Wikipedia

   en.wikipedia.org/wiki/Breaking_capacity

   Types used in commercial and industrial low-voltage distribution systems are rated to safely interrupt 200,000 amperes. The rating of power circuit breakers varies according to the application voltage; a circuit breaker that interrupts 50,000 amperes at 208 volts might be rated to interrupt only 10,000 amperes at 600 volts, for example.

3. Transient recovery voltage - Wikipedia

   en.wikipedia.org/wiki/Transient_Recovery_Voltage

   Examples of TRV waveshapes. A transient recovery voltage (TRV) for high-voltage circuit breakers is the voltage that appears across the terminals after current interruption. It is a critical parameter for fault interruption by a high-voltage circuit breaker, its characteristics (amplitude, rate of rise) can lead either to a successful current interruption or to a failure (called reignition or ...

4. Circuit breaker - Wikipedia

   en.wikipedia.org/wiki/Circuit_breaker

   Time till trip versus current as multiple of nominal current. Circuit breakers are manufactured with standard ratings, using a system of preferred numbers to create a useful selection of ratings. A miniature circuit breaker has a fixed trip setting; changing the operating current value requires replacing the whole circuit breaker.

5. List of IEC standards - Wikipedia

   en.wikipedia.org/wiki/List_of_IEC_standards

   IEC 62146 Grading capacitors for high-voltage alternating current circuit-breakers; IEC 62148 Fibre optic active components and devices – Package and interface standards; IEC 62149 Fibre optic active components and devices – Performance standards; IEC 62150 Fibre optic active components and devices – Test and measurement procedures

6. Electrical wiring in North America - Wikipedia

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

   The Code gives rules for calculating circuit loading and maximum ampacity. Ground-fault circuit interrupter (GFCI) protection is required on receptacles in wet locations and locations where there exists an easy path for fault current to travel to earth. This includes all receptacles intended to service kitchen counter surfaces, crawl spaces at ...

7. Utilization categories - Wikipedia

   en.wikipedia.org/wiki/Utilization_categories

   Control of small electromagnetic loads with holding current ≤ 0.2 A; e.g. contactor relays 60947-5-2 A: Protection of circuits, with no rated short-time withstand current: 60947-3 B: Protection of circuits, with a rated short-time withstand current: 60947-3 DC-1: Non Inductive or slightly inductive loads, resistance furnaces, heaters: 60947-4 ...