Why would power go off and on after replacing an electrical panel?


First, go straight to the panel and double-check your neutral connections into the panel. While not the most likely explanation, it is an immediate threat because a loose connection here can put 240v on appliances built for 120v, frying them and potentially starting a fire outside the panel.

Second, you are on the right track re-examining your work and asking questions and learning more. Learning is fun, and there's always more to learn, and I'd hit up the library and read whichever electrical wiring book speaks to you. The problem is certainly in the panel and your work, since that is what changed, that is the place to look.

If this same problem existed before you changed the panel, and changing the panel did nothing, that is a different kettle of fish. That means the problem is either with the power company, or with individual circuits. I would turn off every single circuit you don't absolutely require, and see if the problem goes away. Then turn on half the "off"...

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I agree. "Power cut" would sound like something done deliberately. "The police cut the power to the building in order to force the hostage-takers out into the open."

"Power outage" is what I would use for a loss of power from a power station.

As for the other interpretations supplied by Elwintee regarding the four original phrases, they all seem perfectly fine to me but I don't think people are that precise or that the meaning is that precise. I think they are used interchangeably in many contexts.

"Cut out" does seem to me to be at the individual machine or appliance level: "the engine cut out", "the radio cut out", "the refrigerator motor cut out". Just the same, I've heard people say "suddenly the lights cut out", meaning the lights suddenly went...

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I replaced the outlets in our kitchen island for cosmetic reasons. To test them before replacing them I tripped them using a standard 3-prong GFCI tester. Both outlets worked, and were wired correctly. Since this killed the power to the outlets I went ahead and replaced them.

Now, I can't restore power to the outlets and I am wondering if I have overlooked something that I have already checked, or if there is something I haven't checked yet.

I checked that the outlets are wired correctly.

I reset all the GFCI outlets in the house, at least all the ones that I could find. (I don't specifically remember finding one that was tripped.)

I checked the panel, and the subpanel, feeling each breaker individually to make sure none were tripped.

I looked for more GFCI outlets. I tripped them all again.

I rechecked the wiring on the outlets.

I tripped all the circuits in the house and reset them in case one of them was partially tripped.


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A Electrical Service Panel, also known as a load center, service panel, breaker box or electrical panel, is a steel box that holds multiple circuit breakers wired to circuits that distribute power throughout your home. Circuit breakers turn the power to your home on and off to protect your wiring from damage by "tripping" when an electrical short or overcurrent occurs. You may consider replacing your electrical panel or adding a sub-panel if your need for additional circuit breakers exceeds the capacity of your current breaker panel or if you want to upgrade from fuses to circuit breakers. It's important to note that a new breaker panel will not provide more power to your home. If your home needs more power overall, Call our team of State Certified Top Quality Electrical Service Specialists to upgrade the power, a process that will include a new breaker panel as well as other accessories, such as new cables and a new electrical meter. Standards generally recognize that the life...

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Most homes have a service panel that uses circuit breakers for overload protection. The breaker automatically shuts off if there is a problem with the circuit, such as a short, or if the circuit is overloaded and draws too much power for the circuit to safely handle. Breakers and the circuits they protect can also be turned off manually by switching them to the OFF position.

If you open the door of your home's service panel, you will see a "main" circuit breaker rated for 100, 150,... or 200 amps, or possibly more, in a very large modern house. The number printed on the breaker's toggle switch is the amperage rating and indicates how much power the circuit can safely handle.

Below the main breaker, you will see multiple branch circuit breakers, each of which controls power to an individual circuit in your home. These breakers are usually 15-amp or 20-amp, if they are 120-volt circuits. If they are 240-volt circuits, they will be controlled by a double-pole circuit...

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I recently had an outlet blow and my landlord came in, turned off the breakers and replaced the outlet in about five minutes. I didn't realize it was so easy to do.

Anyway I was talking to a mechanic at a factory where I have a temp job and he said, "Yeah, well you don't have to turn off the power to replace an outlet if you know what you're doing."

I said, I didn't buy it.

He said, it was simply a matter of knowning what wires to change in what order, so you don't shock yourself.

First of all is this even possible for true?

Second, why would anyone do this? Why WOULDN'T YOU turn off the breakers or pull the fuses?

And of course I would never advocate doing this if it was possible

Sure it can be done.
You just need to use insulated tools, and be careful not to short Hot to Ground.
I don’t think I would do it, if I had a choice, though.

I've done it. Just too lazy to go out to the garage and turn off the...

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A lot of people think when they turn off an electrical appliance that it doesn’t use any power. Time to think again, most electrical devices in your home still use electricity while turned off! Crazy! Some appliances never actually turn off, they are still consuming power in a standby power mode. Some electrical appliances in your home aren’t in a standby power mode, but still consume power because the way their power supplies are built. This is called many things, vampire energy, phantom energy, electricity leak, or leaking electricity. Continue reading this go green tip to learn how you can save electricity and save money!

What Electrical Appliances Still Use Electricity When Turned Off

Any electrical device that has an external power supply connected to it will still use electricity while powered off. Such as cellphone chargers, computer speakers, any of those electrical devices with a cubed power supply on it. Also any electrical appliances that have a clock,...

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Problem with Outlet Receptacle
Electrical Question: Why Do I Have 70 Volts on a 120 Volt Receptacle?

I have receptacles that are not receiving full 120 Volts, they are averaging around 70 volts, and the neutral side is reading hot on these receptacles.

The house is from the 1930’s and there wasn’t a grounding system. The contractors added a grounding system and installed GFCI outlets in the kitchen and bathrooms, but the rest of the receptacles in the house are still only two wire systems with no ground. What could cause the low voltage at the receptacles and why would the neutral side read hot?

Background: Paul, a Student from Bremerton, Washington.

Dave’s Reply:
Thanks for your electrical wiring question Paul.

How to Troubleshoot and Repair Outlet Problems

Application: Troubleshooting Outlets that Do Not Work.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrician.
Tools Required: Basic Electricians...

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Power supplies have large capacitors in them. These capacitors store electricity in them even when mains power is shut off. If you were to touch the connections on the bottom of the capacitors, you could receive a potentially lethal shock. For this reason, you should never disassemble a power supply unless you have received training in how to properly discharge the capacitors.

More answers
Because of the big electric charge held within the capacitors inside it.

Computer power supplies have very large capacitors (elements that store charge) that could give you a very powerful shock if you managed to discharge them. They're like batteries that let go of all their charge at once.

Capacitors store energy (power) for an indefinite time. Touching both leads of any charged capacitor can give you a real good jolt.

For example, the tube of an old-fashioned television set is a giant capacitor in electronic terms: even though a TV may have just been...

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1. Why do I need to change my light box to a fan-rated box when installing a ceiling fan?
2. What does a GFCI plug and/or breaker do?
3. How many GFCI plugs do I need to have in my house?
4. What is an arc fault circuit interrupter (AFCI) breaker and why do I need to have one?
5. How many arc fault breakers do I need to have in my electrical panel?
6. Why should I replace my Federal Pacific or Zinsco electrical panel?
7. Do I need an electrical permit for the work I am having done by a licensed electrician?
8. Do I need an electrician to install my floor heat?
9. What are tamper-resistant plugs?
10. What is the benefit of whole house surge suppression, if any?
11. How many smoke detectors do I need in my house?
12. How many carbon monoxide detectors do I need in my house?
13. What is the most energy-efficient lighting for my house?
14. How do I properly dispose of fluorescent lights?
15. What do I do if I break a...

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Careless troubleshooting of a microwave oven can result in death or worse. Experienced technicians have met their maker as a result of a momentary lapse of judgement while testing an oven with the cover removed. Microwave ovens are without a doubt, the most deadly type of consumer electronic equipment in wide spread use.

The power supplies for even the smallest microwave ovens operate at extremely lethal voltage and current levels. Do not attempt to troubleshoot, repair, or modify such equipment without understanding and following ALL of the relevant safety guidelines for high voltage and/or line connected electrical and electronic systems.

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Circuit Breakers & Tripping

A circuit breaker can appear to be on, but really be tripped.

A breaker trips much more often for a real short than from some defect in itself.

GFIs and breakers are not usually the bad guy - they trip for a reason. And if your problem would make sense from their tripping but they DIDN'T, something other than them is probably at fault.

In some cases a circuit breaker will trip off only after the circuit has been running things for several minutes. This may not be from an overload but from a poor connection point at, or in, the breaker itself, which develops heat that fools the breaker.


A normal receptacle is sometimes ground-fault protected from elsewhere.

A GFCI receptacle will not trip for an overload.

A GFCI rarely trips from a defect in it. Usually a GFI trips from being miswired or from a fault in something that is plugged into it or into a regular outlet...

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