A length of conductive material used as a conductor of electricity.

learn more… | top users | synonyms

2
votes
1answer
129 views

What is the mechanism by which corona discharge damages wire insulation?

I understand that corona discharge can damage wire insulation over time. How? What exactly is happening to the insulation that it ceases to become so insulative?
4
votes
1answer
1k views

How to best run long distance low voltage electric

I am looking into options for running 12 VDC approximately 2000 feet to power some remote equipment. The equipment will have a low current draw (2A max). I am seeking to keep the cost low. Copper ...
13
votes
3answers
13k views

Will doubling thinner wire in lieu of thicker wire work?

I've been needing a jumper cable for a while and have plenty of 10 AWG copper wire lying around. From what I've read, 6 AWG wire is recommended for jumper cables. I want to make a 7 foot cable. So, ...
2
votes
1answer
255 views

How to strip wire using Wire Wrapping Tool from OK Industries

For learning wire wrapping, I have a wire wrapping/unwrapping tool from OK Industries (HW-UW-3C) and some 30 AWG wire wrapping wire. Is it possible to use this tool to strip the wire?
1
vote
1answer
225 views

Headphone wires without insulation

I have some quality earbuds that have no sheath on the wires, because the copper unwinds all by itself, it's held in some thin nylon loose fibres that acts as the insulating material. it's seems very ...
2
votes
1answer
200 views

Name of socketed PCB jumpers

What is the correct name for those little jumper cables, with a small socket each end, designed to go between header pins on PCBs. A bit like these, but singles ...
8
votes
3answers
2k views

How do I “cap” a wire so it doesn't short or electrocute someone?

I'm repurposing a PSU that I recently replaced. I'm using it in a project that needs high current supplied. I don't need all the wires (as you could imagine), but I don't know how to seal them off ...
-1
votes
2answers
6k views

Which wire is negative on this PC fan? [closed]

I just got this PC fan and it has a 3 pin connector, I know the wire with the white stripe is positive but how can I find out which of the other two wires are negative? If you can't see the photo, ...
5
votes
2answers
2k views

How do I tell what gauge wire I need?

I've been working on providing power for high current applications for my project. I'm working on a project with high current (or at least compared to what I'm used to...) What a lot of people point ...
0
votes
1answer
972 views

Does the gauge of wire make any difference when wiring the inside of an electric guitar?

I'm replacing some of the electronics inside my electric guitar. I have some wire I've used for electronics before, but it seems to be thinner than what's normally sold as 'Guitar hookup wire', so ...
1
vote
3answers
313 views

What happens to a DC current at the end of a wire?

This question might be a little more appropriate for the physics stack, but I'd like to test the water here first. I am just getting into electrical engineering, and as I go along, certain aspects ...
-2
votes
2answers
186 views

Is it possible to carry over 20MW? [duplicate]

Is it possible for a series of conductors carry massive currents(100 kA) at voltages over 100V? Assuming there is massive cooling. How can power plants carry MegaWatts of power?
3
votes
2answers
4k views

Why do you need a thicker wire when wire length increases?

Question: So far I've found that the thickness of the wire influences the resistance. A thicker wire has less resistance. Also, the length of a wire has a linear correlation with the resistance. 2x ...
1
vote
1answer
180 views

Capacitance of two wires with a grounded wire between

I have measured the capacitance between wires number, say, 1 and 3. With the wiree #2 just floating, the result was 390 pF. But after i have grounded the wiree #2, the capacitance was 220 pF. What is ...
0
votes
4answers
3k views

What is the white wire for on this voltmeter?

I found this voltmeter on eBay, and I know what the red and black wires are for (live and ground respectively, or alternative names), but I have no idea what the white wire is for. As its top range is ...
0
votes
1answer
80 views

Checking connection in wire bondings [closed]

I'm doing an assignment where I want create a setup to test wire connections in X-ray detector sensors. There are about 250 wires between this sensor and the control PCB. I want to test the connection ...
0
votes
4answers
2k views

What gauge wire for 36V (DC), 5A peak?

I've searched online and found wire gauge calculators but I still can't seem to find a reliable answer. What gauge wire do I need to carry 36 volts (DC) at 5 amps (peak) for 4 meters? This cable ...
2
votes
2answers
152 views

Coupling 14 AWG without Marettes

What options are available beyond marettes to join wires together? I am looking for something that holds 3-5 wires and will be within a portable box (ie will hold together if moved around a bit). Is ...
1
vote
1answer
303 views

Which AWG for an RGB LED Stripe?

I've bought a RGBLED stripe with 300 SMD5050 RGBLEDs. These are rated at ~18mA on 5V each, so I have approximately 5.4A on the complete strip. I have to cut down the strip into several parts and have ...
5
votes
1answer
318 views

Coiled wire around connector terminal, what do I call this, and how do you do it?

Please consider the following image: I randomly wandered into the telecom room at work a while ago, and I noticed these strange looking terminals. How do you terminate a wire like this? Is there a ...
2
votes
3answers
2k views

Determining maximum current through 18 gauge wire in robot arm

For a robotics application, I'd like to power some external electronics and sensors off the logic circuit in a robot arm. The components are a computer (19V, 65W => 5A), 2 cameras (1.2A), 1 light ...
0
votes
2answers
2k views

Formula between wire size and current [closed]

Is there a mathematical formula between wire size, current, temperature and wire type(Or resistance)?
3
votes
3answers
1k views

Can I use staples to hold down electric wire?

I'm building a very small game for my brother. I am moving it from the original, ready-printed motherboard to a sheet of metal. The metal doesn't have holes punched in it, and I need a different way ...
1
vote
1answer
193 views

How significant are hysteresis losses in iron wires with RF currents?

I understand that iron isn't a great choice of conductor for RF currents, as a wire dipole antenna for example. I understand there are several reasons, but I'm wondering specifically about one: ...
9
votes
3answers
2k views

Are there rules for selecting wire gauge for single-pulse applications?

I'm trying to size wire for UL 508a panels. I have UL's wire gauge requirements, but those requirements are for continuous use. The device I'm designing will only run for two seconds, with minutes or ...
4
votes
6answers
5k views

Any tricks to attaching a wire or pin to a testpoint?

More and more often, I find myself needing to tear apart a device to seek out and connect to serial pads. These pads typically give me access to the underlying operating system for research or ...
0
votes
1answer
128 views

STM8L discovery board, wires for the breadboard

I don't know if it is the right place to ask, but still I have a STM8L discovery dev board - http://www.st.com/web/catalog/tools/FM116/SC959/SS1673/PF250636 which has very small square male-type ...
2
votes
2answers
5k views

Can I use lower gauge wire for short runs of longer high amp circuits?

This question is probably more of a "please explain whatever concept I'm missing." But I'll start with my specific question. I'm building an electric brewery and am using a 5500W 240V (23A) heating ...
1
vote
2answers
180 views

Crimp connectors making process review

I'm actually working on a project with several "little" modules. They are all connected to the PSU and the MCU. So I've design interface for each, so I can easily wire everything together. For that ...
0
votes
1answer
584 views

Unused slots in the stepper Motor

The motor I am talking about has six wire slots of which two are unused and wires coming from the motor are restricted to four (4 to 4 jumper connecting wires are there to connect the motor ).So why ...
0
votes
1answer
266 views

Connecting phone using copper power wires

I want to install a video door phone (intercom) in my home, for this I have done a pre-wiring of 4 individual copper wires (normally used for home electricity) and the total length of wires is about ...
1
vote
2answers
423 views

Isolate wires soldered on PCB

I'm soldering some cables on a PCB. They are are stranded, so I've first apply a bit of soldering on them and then solder them on my pcb. The problem is, there's on some a bit of exposed copper on ...
-1
votes
2answers
361 views

Wire resistivity

Could you please shed some light on wire resistivity calculations for me.... for example if you have a wire length at 100m with a diameter of 10mm measured at 0.25 ohms.(what material is 0.25?? I can ...
1
vote
2answers
796 views

How do coaxial cables carry information that a TV can intercept and display?

Is there a specification for this? Like, say, at the backside of a cable box there exists a singular coaxial cable that is meant to be plugged directly in the back of the TV. The TV must be set to a ...
4
votes
4answers
2k views

Stiff, straight wire similar to LED legs

I'm planning on building another LED cube. I've built ones before using tinned 0.6mm copper wire which looked OK, however the wire bent easily and was never quite straight in the first place. I spent ...
4
votes
2answers
258 views

How do you deal with worn wires?

Repairing a Macbook 4.1 (2008 model), I found something odd - the cables are breaking: The left side has a break in one cable's shielding (the wifi antenna most likely, as it's connected to a ...
0
votes
2answers
86 views

Eliminating induction between wires

How is it ensured that (computer) hardware (such as motherboards or processors themselves) does not suffer from from wrong signals due magnetic induction between wires?
8
votes
3answers
3k views

Why are high impedance circuits more sensitive to noise?

Why are high impedance circuits being more sensitive to the noise? They have less current flowing through them, but how is that related to noise, since external noise becomes voltage on the wires, and ...
0
votes
4answers
941 views

What is a good way to solder small transistor to wire?

I have a really small transistor with very little space between its pins. I want to solder resistor to base and wires to collector&emitter. So I am worried about transistor pins come in contact by ...
0
votes
2answers
476 views

Choosing the correct wire

I'm making a protoboard that will include three small sections of wire, around an inch long each, to go: power source -> relay -> out power source -> out When the relay is on the wires will be ...
7
votes
1answer
579 views

What PCB wire termination should I use for high-vibration environments?

I'm designing a system for a high-vibration application. I need to land wires on circuit boards. Someone suggested that I use a Wago cage clamp, and that there might be similar things from other ...
1
vote
1answer
258 views

Detect the shape of a wire

Is there any electrical or other physical property that can tell me the shape of a wire? I mean, if I inserted a wire into a space (of the same thickness as the wire assume), this property should ...
4
votes
2answers
264 views

Hobbyist Leaded Solder

I'm not asking about the safety of which solder, I'm asking about which type of solder would be best for my purposes I'm a novice electronic hobbyist and I just want to know what composition of ...
3
votes
1answer
911 views

Joining fine wires

I've got a postage scale, on which that the 9V battery connector has fallen off, I bought a new one online for £1 (as below), the new one already has cables coming out of it and the postage scale has ...
3
votes
1answer
983 views

Do the very thin wires of headphones have a name?

Do the very thin wires of headphones have a name? by headphone wires I mean the usually green, red and twisted ground cables, about 0.1 mm thick.
2
votes
1answer
83 views

Readily available or commonly used transparent conductors?

Are they any transparent conductors (inks paints or otherwise) that are readily available to hobbyists? (i.e. cost effective and purchasable online)?
5
votes
1answer
3k views

Is silver actually used for coating copper wire?

I heard stranded copper wire would be silver-coated for better conductivity at high frequencies (skin effect). But silver is at least an order of magnitude more expensive than copper, yet only has 5% ...
0
votes
1answer
174 views

Which wires goes to appliance's ground and on/off switch?

I have an electric hair trimmer whose power kept getting interrupted. I knew the problem was in a particular spot in the cord because when it would bend there, the trimmer would lose power. I cut ...
-2
votes
1answer
569 views

Does there exist a switch with wire already attached to it? [closed]

Maybe it's a silly question, but I lose a great amount of time to solder wire to an on-on 6 row (DPSP) switch. I would like to know if there is a switch sold somewhere (cheap) with wire already ...
0
votes
2answers
211 views

Is it possible for an energy source of 4.7mW to heat a Nichrome wire to 800°F [427°C]?

I am trying to understand if it will be possible for an energy source with an output of 4.7mW at 47% efficiency to power a 35AWG Nichrome wire (think dime sized coil) to 700-800 degrees F. If it is ...