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Yes you can, However the wire leading out from the breaker must be rated for 30 or more amps, otherwise there is a fire hazard.

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No, electrical code typically requires that circuits be protected by a breaker that matches the wire size. A 30 amp breaker is typically used for circuits with larger wire sizes. For a 120V circuit, a 20 amp breaker is more suitable with appropriate wire size.

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10mo ago
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Q: Can you have a 120v circuit on a 30 amp breaker?
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Have 30 amp double pole need 15 amp 120v?

You can use a 15 amp single pole breaker to convert your 30 amp double pole breaker to 15 amp 120v. Simply replace the 30 amp breaker with the 15 amp breaker in the circuit breaker panel. Make sure to match the wire size in the circuit with the appropriate amperage rating of the new breaker.


Can a 240v 50amp circuit be changed to a 120v 30amp circuit?

No, it is not recommended to downgrade a 240V 50A circuit to a 120V 30A circuit. The wiring and breaker size must match the voltage and amperage requirements of the appliances being used. It is important to consult with a licensed electrician for any modifications to ensure safety and compliance with electrical codes.


Can you convert a 30 amp 120V RV receptacle into a normal 120V outlet?

No, you cannot directly convert a 30 amp 120V RV receptacle into a normal 120V outlet. They have different wiring configurations and power capacities. It is recommended to install a new standard 120V outlet for regular household use.


Is a 40 amp circuit breaker ok for a 30 amp air conditioner?

No, it is not recommended to have a circuit breaker with a higher amperage rating than the device it is protecting. In this case, you should use a 30 amp circuit breaker for a 30 amp air conditioner to ensure proper protection from overcurrent.


Can you replace a 20 amp circuit breaker with a 25 amp circuit breaker?

It is not recommended to replace a 20 amp circuit breaker with a 25 amp one. Circuit breakers are designed to protect the wiring and equipment from overheating and potential fires. Using a breaker with a higher rating than the wiring can handle increases the risk of overheating and could lead to a fire hazard. It is important to match the circuit breaker size to the wiring and equipment it is protecting.