Can you use a 14-2 wire for 240 volts using under 15 amps?

Yes, you can use a 14-2 wire for a 240-volt circuit as long as the current does not exceed 15 amps. However, it's important to ensure that the wire's insulation rating and the circuit's breaker comply with local electrical codes and regulations. Typically, 14-gauge wire is suitable for 15-amp circuits, but it's crucial to verify that the application and installation are safe and code-compliant. Always consult a qualified electrician if you're unsure.