![]() If you have increased the electric circuit in your house, you should consider the source voltage. If the wire diameter is thin, it won’t be able to carry the voltage drop. The wire gauge should be thick and superior if the voltage drop is high. The wire size will vary depending on the voltage drop. The standard voltage drop is considered to be 3%.īut, it can also drop to 5%, but that’s the maximum. ![]() In a circuit with 240 volts, the voltage should be up to 233v. Voltage drop refers to voltage loss because of the resistance when the current flows through the wires to appliances.įor example, if the voltage drop is 3%, in a circuit of 120 volts, the voltage should stay within 117 volts. ![]() However, if you install a 50 amp appliance in a 100 amp service 200 feet away, you need a 0 AWG wire.Īs you can see, the wire size for 100 amps changes along with the distance.
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