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Q: How many gfci can use one neutral?
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How do you install a GFCI so it is always on to a two way light switch that controls a vent and a light in a bathroom?

Your question sounds simple but it isn't. There are two ways of wiring a light to a switch. One is to bring the hot and neutral wire to the switch box and from there run wires from the switch to the light. If this is the case you can install a GFCI on the circuit. The other way is to bring the hot and neutral wire to the light and from there run two wires to the switch and switch the light that way. In this case you cannot install a GFCI to in the switch box. <<>> The way you want the circuit to work has to be laid out as follows. Method one, the circuit that now controls the bathroom devices can be changed to a GFCI breaker. This is probably the quickest and cheapest, unless the job is new construction. Method two, if new construction use this method, as tearing walls open to get to the wiring will become costly. Where a supply circuit comes from the service distribution panel the first device on that circuit has to be a GFCI receptacle. This device has secondary terminals on it, that if connected every device downstream from it will also be protected. So if you supply the two way light switch that controls the vent fan and a bathroom light from the secondary terminals from the GFCI receptacle they will be protected.


Why and when would you use a GFCI breaker within a older home with a groun?

You need a GFCI outlet at any location that is within 6' of a water source. You also need a GFCI outlet in a room with a concrete floor, any garage, and any location outside the home or under the home in the crawl space. A GFCI outlet protects you from electrical shock near water or moisture. You can protect more than one outlet with 1 GFCI outlet. Connect the incoming power to the LINE side of the GFCI outlet and all the other outlets getting power from that outlet to the LOAD side of the GFCI outlet. That way they will all be protected by 1 GFCI. A GFCI breaker is used to protect an entire circuit and not just individual receptacles. It is often cheaper to use GFCI receptacles than a breaker, especially if "piggy-backed" such as described above. It is also more convenient to reset a GFCI receptacle than to reset a breaker. But your question is "why." From this I suspect you may be misunderstanding the difference between a breaker and GFCI protection. To keep things simple let me say that a GFCI does not work on the same principles as a standard breaker. It provides a much safer protection than a standard breaker. Even with a ground you need GFCI protection as listed above.


Can you use a 240 volt 40 amp GFCI circuit breaker for a stove?

Yes you can but the electrical code does not require it. To use one where it is not requested to do so is just adding to the over all expense of the project.


Why is the GFCI buzzing when you turn on the Breaker?

There's a few small parts inside a GFCI and also a small coil of cable. Electricity in an AC circuit can be considered to vibrate in the cables, this produces unnoticeable harmonics (vibrations/noise). However when a coil (cablewrapped around and around) has AC Current flowing through it these harmonics are increased and become noticeable (canbe heard).The noise coming out of your device is not a safety issue, it is not indicative of a fault with your electricity, however it is annoying.I shall now give a couple of reasons why it may be unavoidable.Resonance depends on many things... Materials the board and GFCI are mounted to being one. the overall measurements and position of the GFCI in relation to the materials around it being another. It might be that the board itself is spreading the sound wave.It may even be the tiniest spec of dust inside the GFCI itself, or that the GFCI'smounting bracket is a tiny bit loose.You may find you can slide The GFCI to one side or another, space permitting, inside your board (youmay have to remove a black plate from the front panel), and by just moving it to one side it may stop the noise all together.A rather unorthodox method of stopping this noise (dueto dust and other internal causes), is to give the GFCI a sharp rap on the front with a solid Item not a heavy item example:Don't use a hammer, also try not to hit the switches). something like a spoon or the handle of a screw driver should do the trick.(Source: Qualified electrician)Otherwise, your looking at maybe calling out an electrician to see if he can find where the sound is specifically coming from, and to put a piece of dampening material into your board.If in doubt, get an electrician out.


Does a toaster use a neutral phase?

There is no such thing as a 'neutral phase'. 'Live' or 'hot' conductors are called 'lines', whereas the neutralconductor is at approximately earth (ground) potential.So, a toaster would be connected between a line and a neutral conductor.

Related questions

Can you use a GFCI on an unswitched circuit line red that uses the same neutral white for a switched circuit coming from the other phase line black in a 240v breaker panel?

Yes. You are allowed to use a neutral for one circuit from each phase of your service. For example, in a residential service, you can use the same neutral for circuits 1 and 3. In a commercial (3 phase) service, you can use a neutral for circuits 1, 3, and 5. You will experience problems if you use a neutral for two 'black' circuits or two 'red' circuits, if the circuits originate from the same phase bus bar. Also, AFCI's are sensitive to sharing neutrals, but GFCI's are not.


Can you use a GFCI plug into a GFCI outlet?

Yes you can. Lots of blow dryers have GFCI protection built in.


Will GFCI work properly if 240 volt split into one 3 wire 120 volt circuit?

No, a GFCI outlet is designed for use with standard 120-volt circuits. Attempting to use a GFCI outlet with a 240-volt split circuit could cause damage to the outlet, the circuit, and could present a safety hazard. It is not recommended to use a GFCI outlet in this manner.


Are gfci receptacles required in kitchens?

No, you could use a GFCI circuit breaker instead.


Where shouldn't you use a gfci?

Since GFCI's are more expensive, you wouldn't want to use them in any place where they are not required. In many old homes, GFCI's are sometimes used for outlets in bedrooms and living rooms where proper grounding is necessary (for computers, TV's, other electronics), but not available because of the age of the wiring. You would also want to avoid cramming a GFCI into a box that is too small to accommodate the bulkier GFCI outlet. You should first replace the box to a larger one.


Can a GFCI receptacle be fed from a switch?

If this question is asking if, by using a GFCI, you can protect some equipment controlled by an existing switch, the answer is Yes. My first guess would be that you probably don't need to. A switch that is controlling lighting in an area with a GFCI, such as a bathroom, should - if it was installed correctly - already be controlling a proper lighting fixture. By this I mean if the fixture is above the shower it will be of a type that is safety-listed 'for use in wet locations'. That type of light fixture does not need to be protected by a GFCI since it is designed for use around water. How to feed a switch from a GFCI: Without GFCI protecting the switch: Connect a hot (usually black) wire from the "LINE" side of the GFCI (which will be marked) to one brass screw of the switch. (Assumption is single pole switch.) Connect another hot wire from the other brass screw of the switch to the light fixture or load's hot wire. Connect a neutral (white or gray) from the LINE side of the GFCI all the way to the load neutral without stopping anywhere. Connect all grounds. To GFCI protect the switch: The procedure is the same except you will use the hot and neutral from the "LOAD" side of the GFCI. This will cause the GFCI to interrupt power should a ground fault occur on the switched load. As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energized.IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.


How do you wire dual switch-plug gfci which has extra wires?

To wire a dual switch-plug GFCI with extra wires, you need to identify the line and load wires. The line wires bring power to the GFCI, while the load wires carry power to additional outlets or devices. Connect the line wires to the line terminals on the GFCI and the load wires to the load terminals. Make sure to follow the wiring diagram provided with the GFCI and use wire connectors to secure the connections.


How do you wire one light and one GFCI and another light light and fan with two switches and one power line?

You can wire the first light and GFCI in series on one switch. For the second light and fan with two switches, use a 3-wire cable for the hot, neutral, and traveler wires between the switches. Connect the hot wire to the power source, and then branch out to each switch. Connect the light and fan to the switches separately using the switched leg of the power from each switch.


What can you do if your newly-installed GFCI keeps tripping unless you detach all the other outlets in the room but all outlets are wired correctly?

If the GFCI keeps tripping even when other outlets are detached, there may still be a wiring issue in the circuit. Check for any loose connections or exposed wires. Ensure that the load connected to the GFCI is within the rated amperage. If the problem persists, consult a qualified electrician to troubleshoot and resolve the issue.


How can you tell if a house has GFCI breakers?

GFCI breakers usually have a "Test" and "Reset" button on them. You can also look for outlets with "Test" and "Reset" buttons in certain areas of the house, such as bathrooms, kitchens, and outdoor spaces, as they are often connected to GFCI breakers for safety.


Can you use one side of a two pole GFCI breaker?

No, a two pole GFCI breaker must be wired to both hot wires of a circuit in order to function properly. Using only one side will not provide the necessary ground fault protection.


How do you install a GFCI so it is always on to a two way light switch that controls a vent and a light in a bathroom?

Your question sounds simple but it isn't. There are two ways of wiring a light to a switch. One is to bring the hot and neutral wire to the switch box and from there run wires from the switch to the light. If this is the case you can install a GFCI on the circuit. The other way is to bring the hot and neutral wire to the light and from there run two wires to the switch and switch the light that way. In this case you cannot install a GFCI to in the switch box. <<>> The way you want the circuit to work has to be laid out as follows. Method one, the circuit that now controls the bathroom devices can be changed to a GFCI breaker. This is probably the quickest and cheapest, unless the job is new construction. Method two, if new construction use this method, as tearing walls open to get to the wiring will become costly. Where a supply circuit comes from the service distribution panel the first device on that circuit has to be a GFCI receptacle. This device has secondary terminals on it, that if connected every device downstream from it will also be protected. So if you supply the two way light switch that controls the vent fan and a bathroom light from the secondary terminals from the GFCI receptacle they will be protected.