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Can you reduce amperage by using thicker wire with a constant voltage?

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2015-07-15 18:42:18
2015-07-15 18:42:18

The amperage flowing through a wire is directly related to the load placed on the circuit, and has nothing to do with wire size, except that a larger wire will carry more amperage. Increasing wire size will not lower amperage but will allow the circuit to carry more amperage if the breaker is also increased in size.

No. Ohm's law tells us that V = IR. For a given load, R is constant, and thus the only way to reduce current is to increase voltage.

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You can lower amperage by reducing the load on the motor (how much work it does), also you can increase the voltage, but the motor must be wired for the voltage increase or it will burn up.

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Ampere = Volt / Ohms, so you either increase the voltage, or reduce the total resistance.

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a stepdown transformer is used to reduce the voltage and limit the available amperage

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It doesn't. Assuming the load stays constant when you reduce voltage you reduce current. Power is derived by multiplying current x voltage. If they are both going down power must decrease.

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Either you increase the voltage, or you reduce the resistance.Either you increase the voltage, or you reduce the resistance.Either you increase the voltage, or you reduce the resistance.Either you increase the voltage, or you reduce the resistance.


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