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The wire ampacity of #12 copper wire with an insulation factor of 90 degrees C is 20 amps. If the load is of a continuous nature e.g. baseboard heaters then the wire has to be de-rated to 18 amps

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15y ago
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5mo ago

Amp size will depend on the power handling capability of the 12-inch subwoofers. Generally, for two 12-inch subwoofers, a mono block amplifier with around 1000-1500 watts RMS power output can provide sufficient power for good performance. Be sure to match the impedance of the subwoofers with the amplifier for optimal performance.

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Q: What amp size should you use for 2 12s?
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What size amp circuit breaker should be used for a home entertainment system?

A typical home entertainment system may require a 15-amp circuit breaker. It's important to ensure the total power consumption of all components does not exceed the amp rating to prevent overloading the circuit. It's recommended to consult an electrician for proper sizing and installation.


Can you hook a 15 amp and 20 amp breaker to a breaker box using 20 amp wire?

No, you should use wire that matches the lowest amp rating of the breakers connected to it. In this case, you should use 15 amp wire since one of the breakers is a 15 amp breaker. Matching the wire gauge to the lowest amp rating ensures the wire is protected from overheating in case of a short circuit.


Can you use a 20 amp breaker if the amp rating on a heater is 21 amp?

No, it is not safe to use a 20 amp breaker for a heater with a 21 amp rating. The breaker should be rated at least equal to or higher than the amp rating of the appliance to prevent overheating and potential fire hazards. It is recommended to use a 25 amp breaker for a 21 amp heater.


What is the wire size for a 35 amp breaker to a ac unit?

You will need to use #8 wire.


Can you use 6-3 NM wire and 50 amp breakers and 50 amp range cord for a 40 amp max load range?

No, it is not advisable to use a 50 amp breaker with a 40 amp-rated appliance like a range. You should match the breaker size to the appliance requirements. In this case, you should use a 40 amp breaker, 8-3 NM wire, and a 40 amp range cord for the 40 amp max load range.

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