For wiring an oil burner, which gauge is commonly used?

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Multiple Choice

For wiring an oil burner, which gauge is commonly used?

Explanation:
Wiring an oil burner uses 14-gauge copper because that burner circuit is typically a 15-amp branch. 14 AWG is rated to carry about 15 amps safely and is the standard choice for this kind of installation, providing the right balance of current capacity and ease of use. A thicker option like 12-gauge would be used only if the circuit were protected at 20 amps, which is less common for a single burner. Thinner wires such as 18 or 16 gauge aren’t appropriate for a 15-amp feed and could overheat under the burner’s current draw and startup surge. (Note: thermostat control wires are usually low-voltage and a different gauge, separate from the main burner power wiring.)

Wiring an oil burner uses 14-gauge copper because that burner circuit is typically a 15-amp branch. 14 AWG is rated to carry about 15 amps safely and is the standard choice for this kind of installation, providing the right balance of current capacity and ease of use. A thicker option like 12-gauge would be used only if the circuit were protected at 20 amps, which is less common for a single burner. Thinner wires such as 18 or 16 gauge aren’t appropriate for a 15-amp feed and could overheat under the burner’s current draw and startup surge. (Note: thermostat control wires are usually low-voltage and a different gauge, separate from the main burner power wiring.)

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