Match the amp rating as well, which will likely be printed on the plugs. I drive a 2007 Subaru Impreza 2.5i. You may be overloading a circuit. The number should be printed on the old and new plugs, so just make sure they match. It can happen when the contacts in the plug don’t make good connection - either between the contacts in the receptacle and plug, or perhaps the wire connection to the receptacle, or the wire connection to the plug. The plug for my washing machine has a black coating on it's three prongs which appears to have melted. And healthy outlets always work reliably. AC WORKS 30 Amp 4-Prong Dryer Wall Outlet Adapter (To 3-Prong 30A Dryer Plug) 4.8 out of 5 stars 217. My two year old Kenmore dryer melted the black cord coming out of the back, beginning at the connection to the 4 prong plug. Simply plug it in, pull it out, and look at the tension amount. Mike, (Cleveland, TN) Mike, e xcessive heat build-up in the shore cord can be caused by any number of conditions. If a metal part becomes loose or damaged, the power jumps around in sparks. I replaced all four plugs and wires, runs fine now but ensure you use OEM plugs. You should get the heater tested as it may be drawing too much current from the outlet and this is causing the cable and the outlet cover to melt. Is it Time for Your Electrical Panel Upgrades in Santa Rosa? Backup Generator Installation: Finding the Right Generator Installer, Outdoor Lighting Ideas to Enhance Safety and Security, Everything You Need to Know About an Electrical Panel Upgrade. Sometimes those nubs can jam and won't release. Is it still safe to use this? More Buying Choices $35.90 (3 used & new offers) MICTUNING 18 Inch 30A Male to 50A Female Heavy Duty Dogbone Electrical Adapter with Handle, 125V 3750W. Arcing can cause a fire, but it more often overheats the electrical outlet. The most likely way this can happen, is if you’ve left the load on and powered. 6 Ways to Protect Your Pets From Electrical Hazards, Geothermal Energy: Power from Underground. Search: Advanced Search When arcing occurs, the plastic around your outlet will begin to melt because it can’t stand the heat. I disconnected the new receptical and found it was incredible hot from where the plug was melting. The most common example: the screw that holds the wire onto the terminal might be loose. Plastic cannot withstand the heat, and begins to melt. I changed it and it works now and not hot to the touch . When you plug and unplug every day or two, things wear out a lot faster than what most plugs are designed for. Having said that, both damaged and overloaded wiring should be dealt with as soon as possible. Old damaged wiring will need to be switched out with new wire, and insufficiently gauged wire should be replaced with a size that can meet the demands of your home or business. As @vertinhol says, check the model information label on the heater to find out the power specifications for the heater. It’s hard to ignore sparks and melting plastic, but many people ignore problems like a loose electrical outlet, flickering lights, and frequently tripping breakers. Arcing is a large amount of electricity that shoots from the breaking point of the wiring to the nearest conductor it can find, such as the other broken end of wiring. At this point power is consumed so heat results. First, turn off power to the outlet by flipping the breaker for the area. If the wires appear frayed or damaged, you need an electrician to make repairs. Backup Generators: Great Solution to Power Cutoffs and More, The Lowest Commercial Electrician in Santa Rosa Isn’t Always the Best. You’ll be glad you did! I also noticed that the dryer plug had melted at one of the prongs. Don’t replace a three-prong plug with a two-prong plug or vice versa. Considerations If an outlet supplies an appliance or tool that needs extra power to start, such as an air conditioner or circular saw, the power surge can generate enough heat to melt the plastic around the prongs. For what reasons would the plug get hot and melt after a few days of being plugged in at a camp ground? When power flows through that wire, some of the energy shoots a spark toward the metal receptacle box or another metal part. Get in touch with us about replacing and testing your electrical outlets to make sure power flows smoothly. Was told due to low octane gas, this can happen and it happens often. That is, the heater plug shows signs of slight melting of the plastic and scorch marks on one prong, and the receptacle looks a bit scorched as well at the same corresponding location. Sounds like a big project, right? And yes, a loose receptacle can help this happen, but not if the plug is left in place. 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