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The temperature marking on a cable is highest temperature that the insulation may be exposed to in operation. It does not imply that the wire is suitable for operation at that temperature. What is does imply is that when cable heating due to current flow is taken into account with the applicable ambient temperature, there is a thermal limit that must taken into account.
When any wire carries current, it heats up a little. If the current density in the wire is very high, the wire gets hotter. At some combination of ambient and current-induced temperature, the insulation may sag, or it's electrical characteristics might change.
Say for example, that a wire is rated at 75C/170F and the ambient temperature is tropical (i.e. 40C/104F). In this case, the maximum allowed temperature rise in operation is 75C-40C=35C/167F-104F=63F.
Sometimes, high-temp cable is needed to survive operation in a cook-top or oven. Even some household light fittings get very hot in operation, such as halogen down-lights. Hence why they often have fibre-insulated wires (rated at 250C) running out to a connector. It is not uncommon for the bases of these lamps to reach 120C/248F on a Summer's day in the average ceiling.
What else can I help you with?
Can you use regular electrical wire instead of speaker wire?
Yes.
When and by who were resistors made?
Otis F. Boykin invented the wire precision resistor and the electrical resistor. In June 1959, he got the first patent for the wire precision resistor and in June 1965, he got his patent for the electrical resistor.
Is there a direct correlation between increase in coil wraps and electrical resistance of a guitar pickup?
There is a direct relationship between the length of wire (thus the number of times the wire is wrapped) and the electrical resistance of the guitar pickup, measured at the two output terminals.
What wire is always hot the line wire or the load wire?
The Load wire is always hot (black or red wire) and the Line wire is the one that returns to your fusebox (usually white). Answer above is absolutely wrong written by someone who does not know electricity and will get you electrocuted. The white wire is your neutral wire. The black or red coming from the electrical panel is the line wire. the black or red wire going to the next outlet or light fixture is your load wire. in some cases a white wire will be a line or load and should be indicated with black tape on it denoting it is not a neutral. quick recap is Line = power in, load = power out.
How does a guitar lead or cable work physics-wise?
The strings' vibration is translated into electrical current which flows along the wire. The same as a telephone.
Why does an electrical circuit have a copper wire?
If you mean a bare copper wire, that is the "ground" wire.
What does the term "brown wire" mean in the context of electrical wiring?
The term "brown wire" refers to a specific color-coded wire used in electrical wiring. In some systems, the brown wire is designated for live or hot electrical connections.
What does WSA mean in electrical terms?
Wire Sizing Amps
What are the benefits of using RH wire in electrical installations?
The benefits of using RH wire in electrical installations include higher temperature resistance, improved durability, and better overall performance compared to standard wire. RH wire is designed to withstand extreme heat and harsh conditions, making it a reliable choice for various electrical applications.
Is there a coating you can put on electrical wiring to reduce the temperature?
Not that I have ever heard of. Electricity produces heat and heat is the cause of most electrical problems. The wire is heating because too much current is being conducted for the size of the wire. You need to either replace the wire with something larger or add another wire. The temperature of the wire has nothing to do with the coating, the heat is being generated inside the wire when excessive current is passing through.
What factors should be considered when using a ground wire size calculator for electrical installations?
When using a ground wire size calculator for electrical installations, factors to consider include the type of wiring system, the maximum fault current expected, the length of the wire run, the material of the wire, and the temperature rating of the wire. These factors help ensure the proper sizing of the ground wire for safety and efficiency in the electrical system.
Which wire would have the lowest resistance a long thin iron wire at a high temperature or a short thick copper wire at a low temperature?
The short thick copper wire at a low temperature would have the lowest resistance. Copper has lower electrical resistance than iron, and a shorter, thicker wire has lower resistance compared to a long thin wire, regardless of the temperature.
Which wire is the common wire in a typical electrical circuit?
The common wire in a typical electrical circuit is the neutral wire.
What do you call an electrical wire that is not insulated or covered?
The electrical terminology of a wire with no insulation on it is a bare wire.
What causes a wire to become warm when current flows through it?
When an electric current flows through a wire, the wire becomes warm due to the resistance of the wire. The resistance in the wire causes some of the electrical energy to be converted into heat energy, which raises the temperature of the wire.
How can I extend the length of an electrical wire using an electrical wire extender?
To extend the length of an electrical wire, you can use an electrical wire extender. This device allows you to connect two wires together securely, effectively increasing the overall length of the wire.
Is the black wire in this electrical circuit designated as the hot wire or the neutral wire?
In an electrical circuit, the black wire is typically designated as the hot wire.
