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30 amp breaker okay for this double oven?
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Posted by ebiker (My Page) on Thu, Mar 11, 10 at 23:49
We are remodeling our kitchen.
We are replacing the existing single wall oven with a double wall oven. Currently 10ga wiring feeds the oven with a 30 amp breaker at the box. 240V single phase.
Question: an Electrolux double oven we are considering has the following specs:
Power Source:
Total Connected Load: 8.0 kW @ 240V / 6.0 kW @ 208V
Other Requirements: 40 amp grounded outlet
Max. Amp Load: 29,33
Ratings: UL rating
Power Source: Electric
Since the max amp load at 240V is 29 amps, wouldn't my existing 30amp breaker and existing 10ga wire suffice? |
Here is a link that might be useful: Electrolux double oven
Follow-Up Postings:
RE: 30 amp breaker okay for this double oven?
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| Follow the manufacturers recommendations. Why risk it. |
RE: 30 amp breaker okay for this double oven?
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No big enough. You need a 40 amp circuit.
8.0 Kw @ 240 volts is 33.333 amps.
The specs should include a circuit size if read further. |
RE: 30 amp breaker okay for this double oven?
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| "Other Requirements: 40 amp grounded outlet " Equipment must be installed in accordance with the manufacturer's instructions. |
RE: 30 amp breaker okay for this double oven?
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| "Other Requirements: 40 amp grounded outlet" Is the oven 120V/240V, or just straight 240V? That will determine if you need 8/3 or 8/2 cable. |
RE: 30 amp breaker okay for this double oven?
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Thanks for the feedback! The specs from that Sears site are backwards it looks like. It certainly would be 33 amps at 240v, so a 30 amp breaker won't work.
I wish we could run 8ga wire to the oven location, but it's not a possibility. Sure would open up more double oven options for me! In my shopping, I'm still surprised that some specs call for a 40amp outlet, even though the calculation of max Amps (Watts divided by Volts) equals less than 30 amps. (ie some ovens are max rated at 6700 watts @ 240v = 28 amps, but the specs still call for a 40 amp outlet.) Is there something I'm missing here?!
I don't want my 30amp breaker tripping all the time if I'm miscalculating, but it would sure be nice to have some other oven options than what I'm currently looking at. |
RE: 30 amp breaker okay for this double oven?
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| There is a safety "fudge" on electrical rating of 20%. If you are over 80% of the usage rating, they round up to the next standard size. You don't want to put anything on a circuit that is going to continually push right up to the limit. "I wish we could run 8ga wire to the oven location, but it's not a possibility" Not sure why you say this, but where there is a will (and some money) there is a way. |
RE: 30 amp breaker okay for this double oven?
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| "There is a safety "fudge" on electrical rating of 20%. If you are over 80% of the usage rating, they round up to the next standard size. You don't want to put anything on a circuit that is going to continually push right up to the limit." You are only allowed to use up to 80% of a circuits load continuously (except for some vary narrow restrictions). An oven is a continuous load since it can pull its full rated power for an indeterminate time. A 30 amp circuit cannot supply a single load of more than 24 amps. A 40 amp circuit is limited to 32 amps. |
RE: 30 amp breaker okay for this double oven?
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| Normally there is a minimum 40 amp circuit installed for a stove. Only a separate cooktop or separate oven will use a 30 amp circuit. Combine them into a range or double oven and you will need the 40 amp circuit. |
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