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

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0
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2answers
80 views

Why is speaker wire so thick? [duplicate]

Comparable to standard house wire, which carries much more current for powering high power devices like vacuum cleaners etc, speaker wire seems to be unusually thick, and tends to be stranded, which ...
1
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1answer
52 views

Calculate gauge of wire with voltage and current

I would like to figure out these two things: X gauge of wire needed dependent on the current needed, and the length. X max length of wire dependent on the current, and the gauge.
2
votes
0answers
99 views

Current capacity of copper wires in vacuum

I’d like to know the current carrying capacity of copper wires in vacuum. The current plan (NPI) calls for sending ~3 amps through the vacuum space of a cryostat. Has anyone done this? Have any ...
0
votes
1answer
33 views

Assembling JST PH connectors

I assembled a few JST PHR-4 connectors with wires (manually crimped SPH-002T-P0.5S crimp terminals with AWG24 wires and inserted it into the PHR-4 connector housing). When I tried to join connector ...
0
votes
3answers
76 views

Need assistance in identifying wire

I'm working on a LED project similar to the one in the picture, and I need to identify the black wire that the arrows are pointing to. What are those called? Here is a picture:
-1
votes
2answers
66 views

I just bought a one-earbud headset with a microphone, but the jack is too small! I cut it open, what do the wires do? [closed]

So, yeah, this is my first question, yay, but I still have a problem, boo. I was on a rummage sale spree, so-to-speak, looking for a new pair of earbuds as yet another cheapie pair has broken. I ...
0
votes
4answers
122 views

Why is the led that I hooked up with my laptop blinking?

I connected a led to my laptop through a USB cable. I connected the red wire to the positive end of the LED and the black wire to the negative and of the LED. Why does the led keep blinking (pulsing) ...
2
votes
3answers
138 views

What kind of metal are the legs of resistors made from?

Can anyone tell me what kind of metal is used in electronics to make wires going in/out to the elements? Can longer of this metal wire be found anywhere? Actually I am looking for sth like copper wire ...
-1
votes
1answer
97 views

Transmitting 12v DC over a long wire

I'm trying to charge my laptop through a 12V battery and 12-19V adapter over a long wire but I've noticed that the adapter makes some noise and doesn't work. On the other hand when I connect it close ...
2
votes
1answer
62 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
149 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 ...
12
votes
3answers
1k 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
97 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
69 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
150 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 ...
7
votes
3answers
836 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 ...
-2
votes
2answers
172 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
407 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
122 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 ...
0
votes
2answers
95 views

How much will be maximum power capacity of a transformer with supper conducting wire

If I wind a specific transformer with superconducting wire and take away temperature from the core by means of some way, how much power can I take from transformer? I should mention max power capacity ...
1
vote
3answers
172 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
163 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?
2
votes
2answers
116 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
141 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
3answers
149 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
0answers
174 views

High current SMPS transformer

I would like to have some tips concerning DIY winding of SMPS transformers. Let's consider the following example (for reference only): Input: rectified 230V AC (mean value: 310V DC on the DC-link ...
1
vote
1answer
64 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
181 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 ...
1
vote
1answer
57 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
240 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 ...
1
vote
3answers
112 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 ...
-3
votes
2answers
237 views

Formula between wire size and current [closed]

Is there a mathematical formula between wire size, current, temperature and wire type(Or resistance)?
0
votes
2answers
202 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
87 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: ...
0
votes
0answers
74 views

SPI - Circuit works or doesn't depending on wire type?

I have a circuit that has two SPI devices. The controller is a netduino (an arduino clone). My problem is that, when I have two spi devices attached, the shift register doesn't work, while the ...
9
votes
3answers
786 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
5answers
463 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
65 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
616 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
93 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
145 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
133 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
123 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 ...
2
votes
0answers
88 views

Crimper for Smaller Connectors [closed]

I need to grow past the 0.1in black headers for a current project. They're just too big. But I don't know of anything suitable as the next step. Low current carrying ability is OK (2A ideal, 1A ...
-1
votes
2answers
127 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
144 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 ...
2
votes
2answers
314 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
226 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
81 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?
5
votes
3answers
435 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 ...