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I would have to say that the amperage label on the main breaker would designate the amount of amps coming into the house.

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Look at the number on the handle of the main breaker. That number is the rating of the breaker and at what amperage the breaker will trip. If you have a main fuse switch the number on the fuse is the tripping amperage. This will be the amount of current that the service is rated at.

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12y ago

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More answers

To determine the amp service in your house, locate the main electrical panel. The amp rating is typically labeled on the main circuit breaker. Common residential amp services are 100 amps, 150 amps, or 200 amps.

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AnswerBot

10mo ago
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In the panel box (if there are circuit breakers) The top breaker or main should have a number on it like 100 or 150 or 200. This is the total amperage of the electric service in your house.

I'm lucky, I see 300 on panel box but that's not enough. I sacrificed one bar for a one 120v for a outlet for my at&t. I need more amp slots for my house for a Nissan LEAF and save our troops.

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15y ago
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There should be a marking on your main breaker next to the meter, you might not have a main at all though. Also look at the size and type of the wire copper or aluminum. find that and ask another question or your local hardware store has a chart in the wire section. Most normal size houses are 200, 225, or 250 amps. older smaller houses usually 100 amps. My house was buit in 1970 is 2,000 square feet and has a 150 amp service. Today the same house would not have anything less than 200 amp service.

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17y ago
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Go to your service meter. (I assume you are a small consumer using a single phase suppply). Identify the Live cable. Then using a suitable meter, such as a clamp-on meter, you can measure the current flowing into the house. It gives a neat and easy way to measure the amps.

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14y ago
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The total number of amps used in a given house will vary at any given time, depending on what lights are on, what equipment you are using, etc. To measure the amp draw at any given time, you would use an ampmeter and use it to measure each of the two wires feeding your panel.

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13y ago
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The main breaker is at the top/center of the panel and should have a number on it. Usually 100 amp panels are used in homes because they are cheaper than 200 amp panels, and 100 amps is usually sufficient current to supply a home.

If you plan to add any thing(s) that will draw much more current than an average home (machine shop, arc welder, etc.), you should look into upgrading the panel. Overloading a panel is asking for an electrical fire.

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12y ago
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Before any suggestion can be made, you should refer to the electrical code pertaining to your area.

It would be calculated using demand factor or service demand factor.

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Wiki User

15y ago
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Q: How can you tell what the amp service is in your house?
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You want to install 200 amp service but the sub panel is on the other end of the house and you dont want to rewire the whole house all at once?

You can install a 200 amp sub panel near the existing sub panel at the other end of the house. This will allow you to upgrade to 200 amp service without rewiring the entire house at once. Be sure to consult with a licensed electrician to ensure the installation is done safely and up to code.


Is it legal to buy a house with a 60 amp service?

It is legal to buy a house with a 60 amp service, but it may limit the electrical capacity of the home. Check with local building codes and consult an electrician to determine if the service meets your needs and if an upgrade is recommended.


Can you use a 1200amps service if you have a 1000amps on service?

No, you should not use a 1200amp service panel if your service is rated for 1000amps. Installing a panel with a higher amperage rating than your service can handle may lead to electrical safety hazards and code violations. It is essential to match your electrical service to the appropriate amperage for safety and compliance.


Would a 125 amp service panel be enough for a 1900 square foot house?

A 125 amp service panel should be sufficient for a 1900 square foot house, as long as the electrical load of the house is within the panel's capacity. It's important to consider factors like the number of appliances, lighting, and other electrical devices in the house to ensure the panel can handle the demand. Consulting with a licensed electrician can provide a more accurate assessment for your specific situation.


Can you install 100 amp service in 200 amp meter base?

No, each size service needs its own meter base.