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This can vary. In the United States a wall socket/outlet is usually limited to 15 amps (amperes) at 120 volts.

Watts = Volts x Amps, so

120 x 15 = 1800

The typical US wall outlet can deliver 1800 watts

Some outlets are wired for 20 amps in which case they support 2400 watts.

NOTE: It can be more complicated than this depending on what's plugged into the outlet. A motor (like in a vacuum cleaner or refrigeratior, etc.) can take amps in that it sends back out without using. Thus, it uses less watts than the amps that flow through it. In this case since the outlet is limited by amps the watts it can deliver to such a device is less than 1800 watts.

Answer for the UK

UK sockets are rated at 13 A at 230 V, so are capable of (13 x 230 = 2990 W) in nominal terms, or 3 kW in practise.

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Q: How many watts can you get from a wall socket in a house?
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Is electricity produced in a wall socket?

no, the electricity is produced at a power station, some distance away from the house and the voltage is transported using wires/ cables to a house and then distributed around the house using "circuits" to a wall socket,etc. hence the electricity is produced elsewhere and simply presneted at the wall socket outlet.


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Is electricity produced in a wall socket?

no, the electricity is produced at a power station, some distance away from the house and the voltage is transported using wires/ cables to a house and then distributed around the house using "circuits" to a wall socket,etc. hence the electricity is produced elsewhere and simply presneted at the wall socket outlet.


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How many watts does it take to run a heat mat?

I don't know what exactly you mean by a "heat mat", but your question is kind of backwards. You don't run an electrical device *with* watts. You run them to *produce* watts (watts of light, watts of heat, watts of sound, etc). I believe the thing you are really asking is how many amps are required to run your device. As an example, consider a "1500 Watt heater" that is made to be plugged into a typical wall outlet in your home. The voltage in the wall is 120V, and the heater will produce 1500 watts of heat when plugged into that 120V. To calculate the amps, you divide the watts by the voltage. 1500W / 120V = 12.5A