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What does it mean to say that the electric current from a wall socket is 120V AC?
Wiki User
∙ 6y ago
Electricity in the US is typically provided in the home as alternating current (AC) at an RMS Voltage of 120 Volts.
How much current will be delivered will depend on what is plugged into that socket. Standard outlets are typically rated at 15 Amperes or 20 Amperes, but higher current ones are available for special purposes where more current is needed. Circuit breakers (or fuses in some cases) are provided to protect the wiring and prevent fires by automatically disconnecting the circuit if a short circuit or other problem causes the circuit to draw more current than it is rated for.
Wiki User
∙ 6y ago
Wiki User
∙ 8y agoAC stands for alternating current; it means that the voltage changes all the time (in form of a sine wave). The number of volts, in this case 102 V, is the RMS value, which is a kind of average. That means that the MAXIMUM voltage is actually somewhat higher (about 144 V to either side).
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