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A GFCI device in a breaker is intended to trip the breaker open when a ground fault is sensed in the circuit that the breaker is protecting.

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Q: A GFCI device in a breaker is intended to?
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What is a Class A circuit breaker?

A Class "A" Circuit breaker is a Ground Fault Interrupt (GFI or GFCI) breaker ."Class A" marking -- A "Class A" ground-fault device is intended to protect people. The Class A marking indicates that the trip threshold of the GFCI is between 4 mA and 6 mA. This marking may be in any location except the back.


Do you need a gfci outlet if you have a gfci breaker?

Not if the GFCI breaker is supplying the circuit you are wanting to put the GFCI receptacle into.


Can you change a 2 prong plug with a three prong plug if you use a GFCI breaker?

NO - it is not safe to do that. A GFCI breaker is only a secondary safety device and your primary safety still depends on the earth wire in a 3-pin supply.


Does anyone make a 100 amp GFCI breaker?

Not that I know of. The largest GFCI breaker I have seen is a 60 amp.


What device senses short circuits and stops electrical flow when ground fault occur?

It is a Ground Fault Circuit Interrupter or GFCI. It can either be equipped in your electric panel as a GFCI breaker, or in a GFCI outlet which also lets you extend the GFCI protection to other outlets "down the line" from the GFCI outlet.


Why won't the GFCI trip the panel box when shorted?

A GFCI is not an overcurrent protection device. It only protects people from electrical shock. However, if you were to create a perfect hot to neutral short the GFCI would not trip and the panel breaker would.


Can a circuit with a GFCI be shared at the box?

Your question is a bit vague, but let's try a two part answer. If you have a GFCI breaker in an electric panel you should only have one connection at the breaker, but the breaker will protect all devices on the circuit. If you are talking about a GFCI outlet, they are equipped to extend the GFCI protection to other non-GFCI outlets by using the proper "output" connection on the GFCI.


Should circuit breaker be exercised?

Just let them be, and remain fat, dumb and happy. The only exception is a GFCI device which has a test button.


Are gfci receptacles required in kitchens?

No, you could use a GFCI circuit breaker instead.


Is a ground fault indicator outlet installed at the breaker box?

There are tow places to put a Ground Fault Circuit Interrupter. There is a GFCI breaker which would be installed in a breaker box and a GFCI outlet that can be installed anywhere. Most GFCI outlets allow you to connect regular outlets to the GFCI and those outlets will also be protected.


What is downstream in electrical?

The terminology down stream refers to an electrical circuit and where devices are connected into the circuit. In reference to the breaker that feeds the circuit everything is down stream from it. If a GFCI receptacle is added into the circuit as the first device, the GFCI can be wired to allow all of the regular receptacles to be protected down stream from that GFCI. Every device added to the circuit will be down stream from the one that is ahead of it. The only device that will not have something down stream from it will be the last device in the circuit.


Can a gfci get weak and trip from over load?

First, lets say this: GFCI stands for Ground-Fault Circuit Interupter. This is NOT an over-current device, and NOT an over-load device. This device stop the flow at 6mA (6/1000 of an amp) of leakage current - current leaking to ground from either the hot or neutral wire. Do you mean a GFCI breaker or a GFCI receptacle?? GFCI receptacles do not "trip on overload". Period. The only over-current protection on a receptacle is provided by the circuit breaker protecting that branch circuit. GFCI breakers are ALSO over-current devices just like normal breakers. And yes, they DO get weak, just like standard breakers do from repeated tripping. They basically have a metal strip inside that gets bent and straightened each time you trip & reset the breaker. All metal gets weak when it gets bent & straightened repeatedly. It is called "metal fatigue".