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Wire gauge is dependent upon the amperage of the circuit.
Although you indicate the volts and the fact that there are 3 lights, you do not specify the current draw of the bulbs.
Some aircraft landing lights are up to 450 Watts, or more. 3 of them would result in a total of 1350 Watts, which at 12 Volts =
- Volts * Amps = Watts
- 12 * Amps = 1350
- Amps = 1350/12
- Amps = 112.5
It would be recommended that you NOT use less than a 1 AWG Copper wire for THAT application.
However, smaller lights would use significantly less amperage.
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∙ 14y ago
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