The prongs on plug and wire get hot.Is this bad?
The prongs on plug as well as the wire get hot. Is this bad?
Ist dies eine gute Frage?
Bewertung
7
20582
6 Antworten
Gewählte Lösung
Rep: 389
4
1
Generally, yes. If the wires get to hot, they will melt, spark together, and make a fireworks show just before catching fire. The main cause of this problem is the manufacturer using wire that is not the correct gauge for the power required. This unfortunately is not a fixable situation for most people. If the unit is relatively new, i would suggest contacting the manufacturer about your concerns. If it is older, please replace it with a newer model.
War diese Antwort hilfreich?
Bewertung
7
If the whole wire is equally hot, replace the unit and don't use it.
If it feels like the heat source is the prongs, use the other answers.
But I can not stress enough, if the whole cable is heating up, do not use the toaster unless you are experienced as an electrician or have the know how. And frankly, from your question, I know that you don't.
Rep: 337
5
2
There is more than one possible cause. One of which you can fix. If the plug prongs or the contacts in the receptacle get oxidized, usually caused by some burning or arcing or just plain aging, this will produce a point of electrical resistance. At this point power is consumed so heat results. It can be enough to melt the plug and wires!
The other possibility is that, at the point where the wire meets the plug, several of the internal strands of conductor wire are broken. Again, this causes a resistance point where heat is produced.
In the first case, you can just clean up the contacts. In the second case you must remove and replace the plug. Cut the wire back to a fresh point.
War diese Antwort hilfreich?
Bewertung
6
This is exactly correct. Heat is produced where the resistance is, so anything causing a resistance at a specific point, indicates a problem right at the point where the heat is developed. So, if the plug is the only thing hot, then the problem is wishing one inch or so of that. The plug, the wire, the socket in which it is plugged.
Your not correct here buddy. Ohms law can be only applied using conditions stated above. Your correct that power is proportional to the squared product of current multiplied by the resistance but this isn't a series circuit were dealing with. This is a plug and plugs have at least two prongs these days. Unless they are plugging there appliances into a lighting circuit of a building with knob and tube then this might be the equation to use. This more than likely is household a/c current and not a power supply. Heat is wattage and it sounds like it is increaseing. If resistance is increased and current stays the same then heat increases. If current stays and resistance goes up then heat increases. We can automatically assume resistance is increasing because it's hot. Arc fault is occurring even if not visible. Arc fault is a overcurrent situation that causes more heat resulting in nonconductive material becoming conductive. Almost like a nuclear chain reaction. Apply ohms law correctly. Seized vacs overdraw
Joshua Glade, these two sentences that you wrote, are exactly the same just worded different: “If resistance is increased and current stays the same then heat increases. If current stays and resistance goes up then heat increases.“
And you said exactly what the last guy stated and then some just explaining how ohms law works and how it should be applied. But you basically said exactly what everyone else did. Just saying...
Might wanna check your grammar and spelling too.
We bought a new 1400 watt ETL listed heater for the porch. We plugged it into a 15 amp circuit and the plug was always warm, not hot but warm. The electrician explained that the electrical draw is over 75% of the 15 amp circuit so he recommended a 20 amp dedicated circuit just for the heater. We have the heater now plugged into the 20 amp but find that the plug is still warm. The electrician said that with that draw, the plug will always be warm. Appreciate thoughts??
16 amp saket aur 16 amp 3 pin top AC 1,50 me laga hua h to top 3 pin garm. Ho raha h kya samasya h
Rep: 49
1
Another possibility is that the electrical outlet is old and worn. If the toaster is plugged into an outlet where the plug prongs don't fit tightly, then heat from arcing can occur right where the prongs meet the contacts in the outlet. This is more likely to happen with appliances which draw heavier current, such as the toaster or a hair dryer. If the outlet does seem old and loose then try another one and see if the plug prongs and cord stay cooler. Some warmth of the plug and cord is normal, but it shouldn't feel hot.
If necessary, you can replace the outlet for minimal cost, if you understand how to do so (be very careful or consult an electrician if you're not sure).
If the outlet is newer and still tight, and there's no visible damage as Damian suggested, then it could mean that Tracy's answer is correct, that the manufacturer used a smaller gauge cord than ideal.
War diese Antwort hilfreich?
Bewertung
4
Rep: 91
3
Hot cord means high resistance which makes unit over amp. In the toaster the coils which heat up are dirty or going bad or might have a slight break in it. Replace toaster or coil and you should be fine.
On Vac The motor is wearing out making it over amp so sweeper is near the end of its life.
War diese Antwort hilfreich?
Bewertung
2
This is not right. High resistance causes LESS amps, not more. However, more resistance at a concentrated point, causes more heat at that point because the energy consumed at that point is proportional to the square of the current times the resistance at that point. If this higher resistance occurred at a point within the coil of the toaster itself, that would make the power cord run COOLER because less current would pass through it, because there would be a reduced current through the cord. The hot-spot produced in the coil however, would likely cause the coil material to melt and eventually open the circuit at that point, making the toaster inoperative.
If a higher resistance occurs anywhere within the power cord. plug, or receptacle, then those points where the resistance increases would heat up. This is usually the cause of a hot AC plug.
Thanks, Damian
Damien is very incorrect in this situation. He's applying ohms law incorrectly. He says that more resistance means less current. Only certain conditions or circuits can this math be used but we're not dealing with series circuits unless were playing with other things that consist of power supplies, vehicles, toys, knob and tube lighting curcuits, the list goes on but not in this situation. Parallel circuits is your clue. More heat than normal; that's another clue. Damien- yes a seized vaccumm will overdraw current until it melts a break in the circuit just like you said the toaster would do. You yourself just contradicted the power equation because that isn't the equation to be applying
So if a vacuum cleaner plug pins get hot ....... and it is a Dyson - high quality, high price and under 3 years old ..... what could be causing this?
War diese Antwort hilfreich?
Bewertung
0
I have a Dyson and the plug prongs get hot too I am wondering if it's because of a long cord with too thin of wire it say's 2x17awg on the cord itself
I have the same problem with my vacuum cord. Bought new about 4 or 5 years ago. Eureka. Has this question been answered in previous comments?
that is normal on most vacuums. it really depends on if any of the prongs on the cord are loose. if they dont wiggle then you are ok.
Hot plugs are generally caused by loose or poor electrical connects. This results in a local increase in resistance R which, in turn, causes the local heating I×IxR where I is current. Motto: make sure you make a GOOD connection with plug terminal posts used in high power appliances such as heaters!
I have replaced my Outlets and heater cores are still melting
War diese Antwort hilfreich?
Bewertung
0
