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Electrical Wiring in the Home/dryer flipping breaker immediately

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Question
i just got a newer dryer. it was plugged in and working at the former owners house. i get it to my house and find i have to change the outlet. i switched the 3 prong 220 outlet to a 4 prong 220 outlet. an electrician checked my work and said it looked great. but when i plug in the dryer it instantly pops and flips the breaker. i had a 50 amp breaker in place but the dryer was flipping it. so after some research i replaced it with a 30 amp breaker. dryer still flips breaker immediately on plugging in. what is happening? is problem with dryer? if so where? or what?

Answer
Monica,

I would feel better if your electrician  took a meter and figured out the problem   the problem with looking only is  assumptions the colors are correct,   

Please watch :

http://www.youtube.com/watch?v=O6R7b4QiZNs

By going from a 50 amp to a 30 amp is actually only effective as a test when the dryer is operational.

One thing you could try,   Remove all the wiring   isolate each wire with a piece of slip over insulation   this has to be done correctly it is fairly simple  but each wire should be OPEN or in other words  electrically isolated from one wire to the next to the next to the next to the next to anything else,     like a big sock over each wire so no possible way it could conduct hanging out in open air.

Make sure the circuit is off,  but the only POSITIVE way to know that is with a meter,   

If you are concerned you might not understand the terminology  then best to get a trained electrician    the change from 50 to 30 amp is actually in the wrong direction and also meaningless as a test.

When the breaker trips instantly that means the breaker is seeing a high current  most likely a hot to ground or hot to neutral  or both

If you somehow or the colors were wrong from the breaker,  then the electrician could look but say it is great    but he would have to assume the colors were correct.

When you have all four isolated you know if the breaker trips something is wrong in the path to the dryer,   

That eliminates the dryer up to that point.

Once the error is corrected and the wires when isolated in space, no longer trip ANY breaker now we move to the dryer.

If the wires are proven to be correct[after exchanging positions or finding a problem in the wire itself] and now are correct,  wired correctly to the dryer, and with the dryer wired up properly  and the breaker trips  now you know you had actually two problems  an incorrect wiring path , and something wrong with the dryer,

Watch the video and use my private email and ask away   it is a lot to understand,  but I will try to help you step by step,    

Again for no more than it should cost   it would be much safer if an electrician did this   

I am suspecting the dryer being even newer and running at the seller had maybe a ground removed and let the dryer run,  but when both the neutral and the ground are connected it will trip a breaker , meaning something is internally wrong with the dryer likely at the terminal board,  or it could be from the terminal board to the interior of the dryer,  

I think the dryer is seeing a direct short from hot to ground,  somewhere    but the challenge is to isolate the dryer from the wiring to find if both are bad or just one .

Watch the video and then let me know,   what you decide to do this should be a very simple and fast diagnostic check by an electrician.  
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Electrical Wiring in the Home

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Will Babbitt

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Electrical issues of all types, wiring, control, appliances, components, specialty in Electric MOTOR or APPARATUS trouble shooting, electric motors, electrical problems, single phase, three phase, DC, capacitors, elevator MG-Sets, modifications, reverse engineering, VFD Drives, single to three phase convertors. Repair of most any electrical/mechanical/electronic apparatus, OEM, AC, DC, Industrial Applications, Three phase, single phase failure mode, determining the root cause of the equipment failure BEFORE failure repeats, Antique appliances, electric motors, fans, ceiling fans, base mount fans, poor equipment performance, Modifications, habitual failures, vibration, redesign, obsolete issues, collectible items restored, rewinding. Owner of EMR Repair Inc www.emrrepair.com More information on electric motors, under Engineering/Motors Ask about any electrical or mechanical problems in the home, office, or even at your work. B2B or business to business CONSULTING I can do but it would be a much more complex issue, that would require a significant amount of time. repair@mearservice.com from there we can discuss and begin work on about anything. Industrial electric motors, controls, troubleshooting, vibration, alignment, any type of industrial or commercial electric/electrcical equipment For the home owner, renter, apartment if you have odd things going on, describe to me, photos are normally very helpful, appliances, heating and air conditioning issues, light switches, installation, DIY PROJECTS FOR THOSE NOT EDUCATED IN ELECTRICAL, we can do some things, but for safety and sanity reasons, I may refer you to a local electrician, and help you find one, help you with pricing and even speak directly with anyone you hire if you have issues,

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Over thirty years with a major repair and sales company, VP of Operations, and former owner of my own specialty repair shops, MEAR Services local to Kansas City Missouri EMR Repair Inc., located in Kansas City Missouri, 2014 sold both businesses to JCI Industries, Lee's Summit Missouri wbabbitt@jciind.com Evaluation and repair of electrical/mechanical apparatus. Electrical and mechanical repairs, trouble shooting including, vibration and balance issues. About.com provides this service, and the huge costs to provide help on about any subject. They provide the servers, the people to vet the experts, costs that would be the same as operating a good sized business, They should be appreciated for what they do, the huge costs and the great help they provide for free, Electric motor questions, can be answered here but there is a dedicated category that has other experts to help and add to a solution. Other common questions, are noises in the walls, breakers tripping, devices not starting or shutting down for no apparent reason, smoke alarms buzzing, thermostat change outs, or sizing wire or needing information for a new project, but anything can be resolved, anything, with enough effort and patience, DIY, with electrical is possible, but in most cases the use of a simple ohm meter or volt meter is needed, they can be purchased at any hardware store for a few bucks. If you have smoke, or smell smoke, don't be writing me, call 911 the Fire Department has no problem looking for smoke smells, better then spraying water on a blazing fire. DO NOT GET CAUGHT INVESTIGATING AND TRAPPED IN A BASEMENT LOOKING FOR A BLOWER FAILING< As to the tip jar, it is up to you, it is appreciated, every expert spends out of pocket that I know, we spend on IP time, computer wear, printing documents, books, and of course our time, but if we prevent a $400 service call, we did well,

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10 plus years, various Technical Schools, followed by Industrial College Credit and non Credit Courses, electronics courses, experience in most any electrical apparatus, electric motors and generators, AC OR DC, fractional to above 5000HP, other electrical apparatus, slip rings, sleeve [plain] bearings, lubrication, identification-no data plate, control components, service and sales. I have continued night schools for decades, the list is extensive. I have been in the business of repairing most anything with wires or mechanical parts for decades, I have some helpful hints and directions you won't have to dig up. Or hopefully not have to pay a huge service call invoice to find.

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