I have a new range with a NEMA 14-50P plug. I find my 240V receptacle is for a dryer, with the top blade a 90° one. So I need to change the receptacle out. However, I think my range needs 50 Amps, and the 240V circuit breakers are ganged 30 amp. The reason I think this is the cord on the range is rated for 50 amps. The installed circuit breakers are type QP. Are these all plug in circuit breakers?. Is it sufficient to just upgrade the existing circuit breakers with 50 amp QP circuit breakers. Is that all I would need to do change out the circuit breakers, and change the receptacle? Do I need to change the circuit breakers or would the 30 Amp breakers suffice?
Electrical – upgrade from a 240V 30A circuit to a 240V 50A circuit
240velectricalstovewiring
Related Topic
- Electrical – Connecting the four terminals of a 14-50P to a homebrew 240v system with three wires
- Electrical – How to install a Miele Washer and Dryer that use a 240V/15A splitter
- Electrical – Hooking up a NEMA 6-30p heater to a 6-50r socket
- Electrical – Plugging compressor into 240v dryer plug (NEMA 10-30R)
- Electrical – Who can I ask to install a 30 amp rated range on a 30 amp circuit (not as easy as it sounds)
- When do I need a neutral on a 240V branch circuit
- Electrical – Best way to add a 240v 30A circuit
Best Answer
To increase the amp rating of your circuit breaker, you almost certainly need to increase the gauge of all the wiring on that circuit. Circuit breakers are there to protect the wiring for overloading, overheating, melting the insulation, and eventually starting a fire.
Typically, you have the following wire gauges (this may vary with long circuits and your local codes):
So going from 30 amps to 55 amps requires you to rewire that circuit from 10 gauge to 8 gauge wiring.
For your oven, check the specs on the oven itself. It may simply have a plug that's designed for multiple ovens and will work on a 30 amp circuit.