Otis Singleton
Knowing how to turn off the electricity in your house is an important safety practice for all families. In an emergency, such as an exposed wire or a gas leak, you must act quickly to turn off all electricity to avoid harm or fire. You can do this via the main circuit breaker, which is usually located inside the main panel at the top. This will shut off all electricity to the house. If you are turning off the electricity for a home repair or renovation, it is best to turn off the power at the source, which may be at the branch circuit breakers in your electrical panel.
| Characteristics | Values |
|---|---|
| When to turn off electricity | In an emergency, or when installing a new appliance or completing rewiring or renovation projects |
| Where to find the electrical service panel | Typically a large grey metal box attached to one of the walls in or around the home |
| What to do before turning off the power | Ensure all lights in the home are off and test several outlets with a non-contact electrical tester |
| How to turn off power to the entire house | Locate the main circuit breaker and flip it to the OFF position |
| How to turn off power to individual rooms or circuits | Turn off the branch circuit breakers in the electrical panel |
| How to turn off power in older homes with a fuse box | Pull the main disconnect or pull out the fuse block |
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What You'll Learn
Locate the electrical service panel
The location of your electrical service panel will vary depending on the property. Typically, every home has one main electrical panel that controls the amount of electricity entering the home. If you live in a house, your electrical panel will most likely be located outside of the house, in a closet, basement, garage, laundry room, or even in the kitchen or bathroom. If you live in an apartment, it will most likely be inside the apartment, usually in the kitchen or bathroom.
If you're having trouble locating your electrical panel, start by looking outside, near where the city power line connects to the house. You can also try going room to room and looking for a large grey metal box. Note that it may not be grey, as it could be painted to blend in with the home's colour scheme.
If you still can't find it, consult your home inspection report or call your local electrical company. They usually have a record of the location of electrical panels and can instruct you over the phone.
Once you've located your electrical panel, you'll need to identify the main breaker. This is usually the largest switch inside the panel, often labelled "Main" or "Service Disconnect", and it controls the electricity supply to your entire home. It will have a number indicating the amperage rating, typically between 60 and 200, and it will be positioned at the top or bottom of the panel.
If your electrical panel does not have a cover, be sure to contact an electrician to have them inspect and install one, as an uncovered panel can be extremely dangerous.
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Identify the circuit breakers
All homes have a main electrical service panel, which is typically a large grey metal box attached to one of the walls in or around the house. This box contains either circuit breakers or fuses.
In older homes, built before 1965, circuits are wired with fuses instead of breakers. Fuse boxes are usually smaller white boxes that sit horizontally and are generally located on an exterior wall of the home.
If you have a circuit breaker, it will be located inside, usually in a basement, garage, or utility closet. It will look like a grey metal box or door, unless it has been painted.
Once you have located the service panel, open the door. You should see rows of individual circuit breakers, which look like toggle switches, and a main breaker on top. A list should indicate which parts of the house each breaker controls. Identify the circuit breaker controlling the circuit you want to turn off. These will usually be labelled.
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Turn off power at the source
Turning off the electricity supply to your house is a useful safety practice to know, especially in an emergency. All homes have a main electrical service panel, which is usually a large grey metal box attached to a wall somewhere in or around the house. Older homes may have a fuse box instead, which is usually a smaller white box that sits horizontally.
The electrical service panel will contain rows of black circuit breakers, which are often laid out in two columns. Each breaker controls a different room or area of the house. If you need to turn off the power to just one room, you can do so by flipping the relevant breaker to the 'off' position. This can usually be identified by a switch that can wiggle back and forth, or by turning off a circuit to a known light and seeing if the light turns off.
If you need to turn off the power to the entire house, locate the main circuit breaker at the top of the panel and flip it to the 'off' position. In an emergency, it is best to turn off all the individual breakers first to avoid a power surge, which can damage appliances and start fires.
If you have an older home with a fuse box, shut off power to the house by pulling the main disconnect or pulling out the fuse block. Individual circuits can be shut off by unscrewing the fuses counterclockwise.
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Shut off individual breakers
If you're planning to work on a standard electrical DIY project, such as replacing a switch or installing a new outlet, you only need to turn off the power to the individual circuit in the area you'll be working on. This is a better option than shutting off the main circuit breaker because the rest of your home's power will remain on.
First, locate your home's electrical service panel. This is typically a large grey metal box attached to one of the walls in or around your home. It could be in an out-of-the-way room, basement, garage, or utility closet. Once you've found it, open the door to reveal the circuit breakers.
Next, identify the circuit breaker controlling the circuit you want to turn off. These are usually labelled, so you should be able to find the correct one easily. If you're unsure, turn off all the circuits and test each one individually by turning them on one at a time and using a small appliance, like a lamp or radio, to test the outlets. Be sure to label each circuit as you identify it to avoid confusion in the future.
Once you've located the correct circuit breaker, turn it off by flipping its toggle to the OFF position. You will typically hear an audible click, and you may see a red or orange tab in a small window on the breaker. Now you can safely work on the electrical issue in that specific area of your home.
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Flip the main breaker
Flipping the main breaker is the most effective way to turn off the electricity in your house. This is sometimes necessary in an emergency, such as when you need to determine which circuit needs repairing or when installing a new appliance.
The main breaker is usually located inside the main panel at the top. It is typically a large grey metal box attached to one of the walls in or around your home. The box opens up to reveal two columns of switches, which are the circuit breakers. The service panel is usually found in out-of-the-way rooms and areas in or around the house, such as a basement, laundry room, or outside.
Before you flip the main breaker, ensure that all the lights in your home are off and test several outlets with a non-contact electrical tester. If you have time, it is best to turn off all the individual breakers first before turning off the main breaker to avoid a power surge. A power surge can damage appliances, computers, and televisions, or even start a fire. Once you are ready, go to the service panel and switch each of the circuit breakers to the OFF position before flipping the main breaker.
If you are unable to locate the main breaker, you can call your local electrician for assistance.
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Frequently asked questions
Locate your home's electrical service panel, which is usually a grey metal box attached to a wall in or around your home. Open the panel and turn off the main circuit breaker to cut off electricity to the entire house.
Identify the branch circuit breaker that controls the room or circuit in the electrical panel. Turn off the individual breaker by pushing the black switch to the OFF position.
Older homes built before 1965 typically have fuse boxes instead of circuit breakers. To turn off the power, locate the fuse box, which is usually a small white box mounted horizontally on an exterior wall. Remove the fuses by unscrewing them counterclockwise.
Yes, it is important to ensure that there are no exposed electrical wires when you open the main panel. Do not touch any electrical wires, connections, or sockets as it can be dangerous. If you are unsure, it is best to contact a licensed electrician for assistance.
