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The amperage rating of any wire or conductor is determined by its size or gauge. It has nothing to do with whether it is a two, three or four conductor wire. For example, in basic residential wiring, a 14 gauge wire is rated at 15 amps, a 12 gauge wire is rated at 20 amps, a # 10 is rated for 30A and so forth.

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14y ago
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1mo ago

A 3-wire circuit could have different amp ratings depending on the type of wire and the application. In residential settings, a common amp rating for a 3-wire circuit is 20 amps, which is typical for general-purpose lighting and outlet circuits. It's important to consult the local electrical code or a professional electrician to determine the appropriate amp rating for a specific 3-wire circuit.

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Q: What is the amp rating for a 3 wire?
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