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Can you run a new 30A dryer on a 50A receptacle and breaker by using the old 50A dryer's cord?
Wiki User
∙ 19y ago
The wiring and the breakers on the 30 Amp circuit supplying the 30 Amp outlet would not be able to supply enough power to a 50 Amp dryer.
As you asked this question it is best for you to ask a licensed electrician to advise you - he would be able to install a new 50 Amp power circuit for you to use your new dryer safely.
Notes from a professional appliance installer and electrician:
As I read the question, you want to use a 50amp cord on the dryer. I have never heard of a dryer that draws 50amps, so I'm guessing that you have a 50 amp cord that you want to use on your dryer. the answer is no, but not for electrical reasons. A 50 amp cord (and outlet) has three straight prongs (and maybe a fourth round ground prong). 30amp cords have have two straight prongs and an L shaped (neutral) prong (and maybe a fourth round ground prong). A 50amp cord will physically not fit into a 30amp outlet. I would suggest getting the proper cord for the dryer. If you do in fact have some sort of high amperage commercial dryer I would suggest not plugging it into a 30 amp circuit. It will wind up tripping the circuit when the heat cycle starts.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
More InfoYour "50a dryer cord" is one of a kind, unless it's some sort of one-off commercial variety. Residential dryers draw a maximum 30 amps of current, and are generally supplied with 30-amp pigtails, similar to what has been described above, with the L-shaped ground prong.
A 50-amp cord -- the sort generally used for electric ranges -- will NOT fit into a 30-amp outlet. This arrangement (called "indexing") is meant to protect consumers from mismatching the two common 240 VAC appliance hookups.
If you're wondering whether an electric dryer can be run from a 50-amp outlet -- yep, all day and all night and to the end of time. All that needs to happen is to provide a 50-amp pigtail for the dryer. The dryer DRAWS amps, it doesn't RECEIVE them at the whim of the circuit. It will draw no more than usual on a 50-amp circuit.
An electric range -- normally a 50-amp 220-240 VAC appliance -- can be run on a 30-amp circuit... if you run just one or two burners at a time. The appliance is amp-rated based on all four (or six) burners and the oven all being on at the max settings all at the same time. Obviously, this seldom happens in real life. The worst thing that can happen when doing so -- in a properly wired building -- is that a breaker would pop.
Wiki User
∙ 11y ago
Wiki User
∙ 7y agoA home circuit for a clothes dryer is 30 amps. This means that the breaker feeding the circuit must be rated at 30 amps. A # 10 copper conductor with an insulation factor of 90 degrees C is rated at 30 amps.
So to answer the first part of your question about the breaker the answer is no, the breaker must be changed to a 30 amp breaker.
The receptacle configuration of the 50 amp receptacle will not fit the four pin cord that comes complete with a new dryer. So the 50 amp receptacle can not be used.
If the 50 amp circuit is in a older home then the feeder cable might not have enough conductors in it. New dryer cable requires three current carrying conductors with a ground conductor also in the cable set. If the existing cable has three current carrying conductors and a ground then it can be used. The cable could be a # 6 depending on what was plugged into the old 50 amp receptacle.
Older set ups grounded the neutral conductor of the cable set to the frame of the dryer there by using the neutral return conductor as a ground conductor.
The electrical code has changed and this is not allowed any more and states that the ground wire has to be a separate conductor and it connects the frame of the dryer directly to the ground bus on the electrical distribution panelboard. Hence the new four pin plug that comes with every new dryer and the need of a new four pin wall receptacle.
Wiki User
∙ 9y agoNO. - First the outlets for 30 and 50 amps are different, precisely to prevent this kind of dangerous usage. The wiring to 50 is heavier duty than 30 amp for your safety.
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