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Questions tagged [wire]

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

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30 views

LED Strip - Wire Size & LED Controller

First Question: I bought a few rolls of high density 5M individually adjustable LED strips - 14.4 Watts/M @ 24V which equals to 0.6A per meter. I was advised I could run up to 10M in series which is ...
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41 views

Trying to revive old PA System - Need help understanding what wires are [closed]

I am attempting to get an old PA system to work in a factory that hasn't worked in some time. Nobody knows how it works. I found 2 wires near a radio in a back room and wrote down all the info in the ...
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0answers
52 views

How to find the right connector?

I have gotten the task of finding an appropriate connector for our application, but given so much information there is on connectors, I don't even know which information is relevant. So this is the ...
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2answers
68 views

What is this connector called and how do I open it?

And how do I open it to put in a wire? And can I use stranded wire or should i crimp (it's so small ferrule connectors dont fit)
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1answer
68 views

Is this mains switch on the Neutral or on the Live wire? [closed]

I'm changing the chandelier in my living room and I would like to double check whether its switch is on the live or on the neutral wire. I have a test lamp which is rated to measure 125-250V. There ...
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4answers
642 views

Does the neutral wire have any voltage?

In this article, the author talks about 3 phase and the magic of a missing neutral wire. And there's the following paragraph: In a 3-phase system the voltage between any two phases is 3 times ...
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1answer
36 views

Effect of wire gauge change on thermocouple measurement

I'm working on attaching to a thermocouple harness that had six 16AWG chromel wires and one 12AWG Alumel. The alumel would T off with each of the chromel wires to make a pairing and so the common was ...
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2answers
67 views

Can I connect 10 AWG wire carrying up to 25 amps to 10 parallel 1 ohm 10 watt resistors?

I am trying to measure the charge capacity of some LTO battery cells. To do this I want to discharge each battery cell from 2.5 V to 1.7 V. I am going to measure and log the current over the discharge ...
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25 views

RaspberryPi: Load cells and HX711 amplifier

I've created an app that will read 10 weighing scales at the same time with separate values but since some wires are like 1 meter long, I get so much noises in the values. I just wanna know if what's ...
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3answers
66 views

Copper wire current ratings [duplicate]

I have seen a wide variety of different estimates for the maximum current rating for copper wire. For example, for 24-gauge copper wire, the Wikipedia article about "American wire gauge" claims that ...
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2answers
81 views

What is the purpose of cylinder “second power bricks” on cords? [duplicate]

I have noticed a large number of power cords that have a PSU built into them also have a second brick on them. What is the purpose of this "second power brick"? Example, Xbox 360 Power Adapter: I ...
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2answers
26 views

Female to female jumper wires

Where are female to female jumper wires used? They only have provision to allow other wires to be plugged into so cannot be used on breadboards. So, practically, where are they used?
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1answer
55 views

Use of multi-strand wire with terminals

I have a question regarding multi-strand wires. I use wires starting from 0.34 Sq mm to 6 Sq mm in my electrical cabinets. While connecting these wires in terminals, is it recommended to twist the ...
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2answers
133 views

The art of using breadboard

I am making a circuit for converting analog to digital signals using an ADC0808. This IC has 28 pins, and my circuit also includes a 555 timer and some LEDs to display the output. The high number of ...
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3answers
131 views

What is this part of the wire called?

I have no idea what this part is called. I want to figure out if I can remove the wire out of it and slide in the other broken end before soldering it the board. Is it reusable, or do I need to buy ...
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2answers
104 views

Joining high current wires outdoors

I am conducting an experiment where I would like to heat up 18 AWG copper cables outdoors using to 50-60°C using 60 amps. The wires are wrapped with teflon to prevent damage to the cable. Can I use a ...
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1answer
59 views

Parasitic Inductance

when we say that in a wire there is a parasitic inductance, what is its cause? Is it the skin effect of the wire, the magnetic flux (generated by the current) through the surface of the total circuit ...
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1answer
177 views

On a wire designated as '3x14AWG' what does the '3x' part mean?

On a wire designated as '3x14AWG' what does the '3x' part mean? It is on a wire that is part of a surge protector power strip.
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1answer
79 views

connector between copper wire and very small silver wire

I have a scientific piece of equipment that has very thin silver wire (they are 0.008'' in diameter, with teflon coating, for a total outer diameter of 0.011''). I need to connect this equipment to ...
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0answers
46 views

What kind of connector can be used for 1.5 mm jack

I recently bought this product. The jack is of 1.5 mm in this. I have tried to use all kinds of wires inside this jack but none of them fit properly. The standard male to male wires are also too loose ...
2
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1answer
102 views

Strongest electrical wire at AWG 24

Is there any ultra strong electrical wire at about AWG24 (0.22mm)? I want something that would be strong as a steel wire rope but also with low resistance that can used as electrical wire.
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2answers
43 views

Connecting two wires to a DC 12v port on a controller board with 4 pads for a monitor

Sorry, the question was difficult to word. Basically I recently bought a controller board for a monitor and the DC cable I got wasn't correct. So until I get the right part, I just want to test the ...
2
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1answer
79 views

Splicing 24 awg wires - wire and tool selection

I'm working on a raspberry pi project - a sump pit monitor that sends an emergency email if a float switch above the point where the water triggers the pump is switched (purely for monitoring, not ...
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1answer
39 views

Mixing wire gauge questions

I am putting a 50W 3.4A max 12V solar panel on my camper van. I want the option of removing it from my roof racks & mounting it remotely (so I can park in shade, but still have the panel in the ...
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3answers
69 views

Wire size question

I am trying to figure out AWG from a European/German schematic. The wire is listed as 0,3mm. (That's 0 (comma) 3mm.) I can find wire for sale in this diameter, but I need a reference to AWG. Is ...
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1answer
104 views

What determines the frequency of network cable

You have Cat6, 23 AWG, rated for 250Mhz frequency. You then have Cat6a, 23 AWG, rated for 500Mhz. Both are unshielded. How is Cat6a able to transmit data at a higher frequency then its counter part? ...
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1answer
58 views

Is it possible to use the same RJ-45 connector?

Given that the wires are connected to the pins and crimped with a crimp tool; is it possible to "un-crimp" the wires such that they can be unattached from the RJ-45 connector? Whereafter the connector ...
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2answers
46 views

Closing 1s battery connector

I have a drone that can plug two 1s batteries. I have the option the plug only one battery but I need to "close" the other battery input with the following (image). I have no idea how this is called. ...
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2answers
119 views

How to regulate voltage of transformer output for nichrome wire

I have a basic CNC machine for cutting EPS foam which uses about 9.5in/23.5cm long straight 28 gauge Nichrome wire as the cutting element. The nichrome wire is powered independently with a 220V-36V 5A ...
2
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1answer
53 views

Wire ferrule installation woes

So, I have some 1mm2 (cataloged in the USA as 17AWG) fine strand (259 * 0.07mm) test lead wire that I am trying to adapt to Eurostyle terminal blocks (which I can then adapt to other things, such as ...
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0answers
80 views

Is there a limit on the current carrying capacity of a wire?

Obviously, for continuous current there is - the melting point. If it is superconducting, the field strength at which it quenches. OTOH if we specify a pulse of arbitrarily short timescale in order to ...
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1answer
48 views

RV Off-Grid Electrical System Wire Gauge Sizing

I'm working on building a Tesla battery powered off-grid system in our Airstream 22FB Sport. The idea is to be able to run the 120V AC system from the 5.2KV Tesla battery which is with the existing ...
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45 views

Power problems related to copper wires and pigtails

I am using a battery to power a odroid which requires 5V/4A. The battery voltage when measured using a multimeter was around 26.7. I had two setups: I used a 1 sq mm copper current carrying wire to ...
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2answers
55 views

Male/female wire connectors - How to tell AWG/mm^2 rating?

So I have a project where I will be running 20 AWG wires. Now there will be one section where I will need to connect the wires with a male/female connector. I'm having trouble identifying which ...
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2answers
90 views

What are the practical differences between AC and DC transmission?

I have a long (2m) but thick wire between transformer-based power supply and low frequency power amplifier. Know your best advice ahead, but no, I cant get rid of it. I can put it in two ...
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2answers
115 views

11.1v Lipo battery thick to thin wire connection heating up

I have a lipo battery, 11.1v, 2200mah, 20C. I needed to connect to to a smaller wire because the thing I am connecting it to has a little jst connector. So I bodgily just wired the thick wire to the ...
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2answers
117 views

Tank Water Level Indicator Wire

I am building a simple water level indicator (approx like the circuit below) for my tank. However, I am wondering about the wiring, for I suppose copper cables corrode in water and produce toxic ...
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1answer
89 views

Why does the self-inductance of a straight wire decrease when its radius increase?

I made some research on the self-inductance of a straight wire, and many sources cited “Inductance Calculations” of F.W. Grover. So I read a bit of that book but I couldn't find the answer to my ...
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45 views

Maximum MAX7219 wire length to LEDs?

I'm intending to make a multiplexed 128 LEDs 'ceiling light', which has LEDs randomly spread out over a 2 by 1 meter area. For this I need two MAX7219 ICs, so they can handle 64 LEDs each, where ...
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2answers
98 views

Using 28 AWG flat/ribbon cable for LEDs

I want to control a lot of LEDs (like 128) in an area of about 1 m2. Instead of using separate wires, could I use a 28 AWG flat cable, and split/cut it wherever needed? E.g. split it in two wire ...
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0answers
55 views

Need help identifying a cable

We bought a LED pendant light, and it turns out that it hangs too high for our tastes. Rather than sending it back, I figured getting a longer cable would be easy enough. (Famous last words...) ...
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3answers
121 views

What is modern fire alarm cable made of?

I'm curious about the fire alarm cable that's being installed in a new building next to my office. In the fairly distant past, I learned that fire alarm cable was "pryo" cable. Under the red jacket ...
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3answers
225 views

Transmit 7MHz analog signal from board to board

I want to transmit real passband analog single ended signal with bandwidth, 0 to 7.3MHz, from board to other board. distance from these board will not be more than 15cm. what's the best choice for ...
2
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1answer
423 views

DHT22 bad readings on long rj45 cable

Duplicate of https://raspberrypi.stackexchange.com/questions/91781/dht22-bad-readings-on-long-cable, I figured there is chances people here have a solution for me. Hi, I'm preparing a setup with a ...
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1answer
125 views

How does distance between parallel batteries affect voltage drop/required wire thickness?

I'm looking to wire up an off-grid system. What I'm stuck on is battery placement. The likelihood is my batteries will need to be quite far apart (almost 2 metres). My question is how does this ...
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1answer
63 views

How can I connect these two wires? [closed]

I wanted to tinker with the microcontroller of the headphones so I cut the solder between these two wires, to stop the power supply. Now when I connect the black wire (power ground) lead to the ...
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2answers
156 views

What is the mechanism that causes two conductors to “stick together” when a current is passed?

If the positive and negative terminals of certain DC supplies are brought together under certain conditions, the wires will "stick together" with a slight force, feeling almost like they are ...
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9answers
13k views

Does wire color matter in electronics?

I'm fairly new to electronics here. But I can't seem to find any clear answer anywhere on the internet. Are wires special depending on their color? Or they have all the same purpose with just colors ...
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2answers
1k views

How to solder Christmas lights insulated wire?

I want to fix Christmas lights like these, whose wires got cut near the batteries. The LEDs near the batteries still work. I tried touching the wires from the two parts and I was surprised that the ...
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1answer
767 views

Beginner Question - Solder won't stick to a certain wire

I am trying to tin some wires as they won't stick to the IC pins that I'm soldering them to. The problem I am having is that the solder won't stick to the wire. My iron is fine as can solder other ...