Questions tagged [wire]

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

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Any Hirose DF40C ribbon cables out there? [closed]

I am currently working on a project with compute module 4 from raspberry pi foundation. It is supposed to be very compact so I bought one of the smallest IO boards that I could find. Everything works ...
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Why does Pomona banana jack cable have 18 AWG but can handle 15 amps?

This is one of those very common jumper cables with banana plugs. It says 18 AWG in the datasheet (link below), but it can handle up to 15 A? One of the labmates told me it could handle up to 20 A?! ...
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Would short 30AWG wires be a problem for 1A pull?

My knowledge in electrical engineering is extremely basic. I'm currently doing a project and I'm in the process of choosing the correct wire. My lack of experience is making it hard to know the limits....
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4 votes
5 answers
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Best trick to strip wire in the middle (to connect elements in the middle)

I have a simple 22 AWG wire that needs to connect to multiple elements. Every connection is a solder joint. I would rather not cut up small wires, as it's for a batch run. Normally I'd love to use ...
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AWG and metric markings on wire differ notably

I have been looking at "Tri-rated wire". This is wire that ostensibly meets the British BS6231 Type CK, US UL 758 Style 1015, and Canadian CSA 22.2. I have noticed that the metric wire size (...
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Will current flow from catenary to contact via droppers or jumpers if something happened with contact wire?

In railway system, catenary is also carries the same voltage AS contact wire. So that at the time of requirement, catenary can provide current to the contact wire. Will the current flow from catenary ...
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Using capacitive touch screen without human hand

I'm trying to learn more about how to engage a capacitive touchscreen without using a human finger. Full disclaimer I'm in mechanical engineering (notoriously known to have difficulty comprehending ...
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Physical switch for reconfiguring an Ethernet connection

I have an Ethernet connected device that I need to move from one switch to another from time to time. I want to implement a way to do this remotely using an electronic or even physical switch. Is it ...
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2 votes
2 answers
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How to coat a thin electrical wire with carbon?

I am looking for glue that can be used under a bio-solution. The solution is a bacteria culture solution (LB, SB). I have a chamber filled with culture solution and I would like to extend an ...
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Wire size: is a 16 AWG wire the same 3x 23 AWG wires?

I'm building an LED installation and I was wondering if I could use the cat6 cables I already have. I've calculated the needed wire area to be 16 AWG (D 1.4mm, 1.65mm2) (for 5 meters). Would this be ...
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Negative DC wire gauge

I would like to mount some external flood-lights on a motorhome with a 12V DC system. I may need to install new positive wires to make sure they are sufficiently thick. I wonder if I also need to ...
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7 votes
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Why is this complex shaped wire used to connect two catenary systems in OHE?

While studying about overhead equipment I came across this video. The below image taken from the video shows a G-jumper. The electric connection can be made using simple wire without any twist. Why is ...
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Best practices for soldering a larger wire to a smaller connector/terminal?

This is for a 24V 6.25A power supply. The power supply brick will feed into the connector then power a prototype device. What are the conventions or best practices to solder a wire to a much smaller ...
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1 answer
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What wire size to be used for Peltier cooling

I'm making a project with three Peltier in parallel (12V & 6A) each (TEC 12706) for cooling. I would just like to know the wire size to be used in (AWG or mm2), for running project smoothly.
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Servo motor long connection wire

I'm working on a mechanical device that uses three DSM44 servos, two FEETECH Mini Servo FT1117M, one JX PDI-6208MG Metal Gear Digital Servo, and one DS04-NFC 360 Degree Continuous Rotation Micro ...
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What kind of wire terminator is this for computer power supply fan?

Trying to determine the style of wire-terminator used here so I can buy a few. What is this called? It's on the wires for a three-wire fan used in a desktop's power supply.
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2 votes
3 answers
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Wire resistivity / heat generation

How to calculate the volts/amps of a battery which is connected to a simple wire for heat generation? That is, how to use: known wire length, diameter/area, resistivity to calculate the required volts/...
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1 vote
2 answers
310 views

How to calculate length needed for heating element (2mm Nickeline/Nichrome wire) to a specified power?

to start off, i dont really understand about electrical engineering. im a mechanical engineering student tasked to continue the project. i dont really understand electrical stuff beside the very basic ...
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wire rotary switch with leds that turn one at a time

I have a 9V battery, a rotary switch (one pole, 5 positions), and yellow LEDs (2V drop). How can I wire it so that as I rotate the switch the LEDs turn and stay on until I reach the end of the switch? ...
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How to connect a 2 wire current sensor to a 3-wire set-up?

At the moment I have a couple of 3 wire current(4-20mA) sensors inside my setup that have the same connection as the schematic below. One of the sensors has broken. We can not directly get the same ...
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1 vote
1 answer
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Difference between jumper wires and jumper leads

I'd like to know what is the difference between a jumper wire and a jumper lead; sometime I found that they are synonims, other times I found that a jumper wire is the following: other times I found ...
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2 votes
0 answers
57 views

50 Hz noise from mains plug even though it isn't connected to a power source

I am developing a front-end for a smart meter and I'm trying to measure the mains by using a power lead with the other end spliced to connect it to the front-end. I firstly powered the setup with a ...
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1 vote
2 answers
153 views

How to design DC bus bars for batteries?

What factors should we consider for designing bus bars for cell terminals? Suppose I have LFP battery pack made up of 9 cells in series each having maximum of 3C discharge rate and a nominal capacity ...
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Getting rid of AC DC adapters

Getting rid of AC/DC adapters I'm aware of the above question but feel it didn't address my situation. Note: Robot meant to be an underwater ROV(Remotely operated vehicle) I'm designing a robot and ...
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How do I fray/twist small wire reliably for soldering?

I accidentally severed a lcd monitor cable, and am not sure how to fray/twist them together reliably in order to solder it back? It's difficult to see all the strands, and not miss any, ime. Also, ...
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1 vote
1 answer
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What type of wires are used inside a USB 3.0?

In a USB 3.0 cable, there are 9 different wires used. In the same, suppose we take the two differential pair wires (TX, RX) are used, which are in the range of 26-34 gauge. But I need to know what ...
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Determining wire gauge/AWG for DC

I have 15 kW electrical motor that will be connected to a 50 V battery. I'm trying to determine the wire gauge/AWG. Looking at AWG created confusion from as every chart has different recommendation. I ...
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1 answer
76 views

Estimate electromagnetic emission due to current in wire

I am working on a project that will need to pass CEM requirements. I would like to "estimate", as in, get an order of magnitude of the electromagnetic emission. The device include 2 parts. ...
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2 votes
1 answer
101 views

CCTV cable power rating?

I want to know whether I can use this d-link 3+1 CCTV cable for powering an led strip which runs at 12 volts 1 amp. The led strip is approximately 12 meters away from the smps power adapter. I checked ...
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3 answers
226 views

Can increasing the wire gauge reduce your electric bill?

I was in a seminar and heard the presenter say something I am not able to understand. The statement was that if you use a higher gauge wire it would help reduce your electricity bill. Since I was not ...
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How to auto-manage wires in Proteus?

The problem I am having is that I created a schematic of a game that uses shift registers to drive LEDs, and in that game, you need to on-and-off the data line back-and-forth in order to display a ...
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384 views

Flaxseed oil as insulating oil for wires

I've bought clothed wires which look like vintage wires found in old audio equipment. I was expecting they are 'oiled' or waxed but they visually didn't. Now I got flaxseed oil and olive oil available ...
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Difference in wire gauge for three phase and single phase domestic power supplies

I'm trying to understand why the recommended wire gauge for a domestic supply depends on whether you're getting three phase or single phase power. Specifically I'm talking about when the power rating ...
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1 vote
0 answers
54 views

What are the components I would need for an electromagnet with the given specifications?

I need to make an electromagnet that exerts at least 5 times its own weight on a ferromagnetic material kept 0.03 m away. I know that: F = [(number of turns × current)2 × magnetic constant(4 × pi × 10-...
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What kind of wire is this? Copper wire with some kind of wool in it

I am trying to repair broken headphone wire with this amazon thing. Here is the first pic showing what I am trying to do: I made sure that black wire is working by playing something on the phone and ...
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3 answers
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Looking for thin guage wire that is stiff, conductive, and solderable [closed]

I have an application where a small daughter board is elevated and needs very minimal support. The supports for the board need to be very thin, as stiff as possible, electrically conductive and ...
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Can 23/76 wire handle 12V 6A power? I have looked at several tables but cannot find answer

There is nowhere which concretely tells me if 23/76 is sufficient for 12 V 6 amps power. Is it okay to use 23/76 wire for 12 V 6 A?
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My soldering iron only has one wire coming out from the top and it has a clip at the end. How do I power this?

Can't figure out why or what or how it works.
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Segmented Wire Gauge and DC Current Capacity

I am working on a project that brings power from a car battery inside the vehicle and to a DC-DC charger. The DC-DC charger then takes the power and charges a second battery. The system is rated at ...
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139 views

Should we use flat ribbon wire cable for power?

The main scope of this question is about hobby 3D printer. The element in scope are 10K NTC thermistor for temperature sensor Stepper motor NEMA17 required about 1.0 A Hotend heater 12V 40W required ...
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What type of wire can I use to run 5V, 30A to my Arduino controlled relay module over a distance of 10-12m?

I'm building an Arduino-controlled Christmas light show. I power my 16-channel relay module with a 5V, 30A supply. It is placed outside the house and I want to place its power supply powering the ...
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1 vote
3 answers
181 views

Can an insulated copper wire oxidize down its entire length?

I was doing some electrical wiring on a trailer today and was surprised to see black instead of shiny copper when I cut and stripped a section from the middle of a long section of uninterrupted wire. ...
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1 vote
1 answer
106 views

DC current rating of copper wire (SWG)

I want to use SWG-sized copper wire but I am a little bit confused about the following: On the internet I found different charts with different maximum current ratings for the same wire diameter. The ...
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3 answers
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WS2811 series: power consumption and voltage drop

I recently bought some WS2811 LED strips (these). I intend to connect 6 in series (6 * 50 = 300 leds), and I have some questions. In the datasheet and on the Amazon page it is written that each LED ...
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With enough copper wire, can I attach one end to one side of a 9V battery, then circle the earth and connect it back?

This is a dead serious question I have not been able to find an answer to: if I had enough wire, could I make electricity pass through if I connected one end to a small 9V battery and then circled the ...
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Soldering wire directly to a PCB through hole vias, what is acceptable proximity tolerance?

The wire gauge is 16 AWG. The hole size is 63 mil, and the overall via diameter is 98.5 mil. What is the minimum spacing between two of these for voltage levels of 0-12V and 0-160V circuits? I think I ...
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Signals transmission

If I have more than one sensor that provides a digital output (1 or 0 only,) and I only have one pair of wires connected from all the sensors to a specific point (assume the sensors are at point A and ...
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2 votes
1 answer
112 views

How to remove 800 kHz signal noise in long wires?

I have a simple setup with Raspberry PI and level shifter chip (3 V to 5 V), connected to some neopixel LEDs via ribbon cable (~30 cm in length) and then with thin solid copper wires (varying from ~10 ...
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6 votes
3 answers
244 views

Why so much space around these toroid windings?

I have recently noticed some toroids wound with what I consider to be huge space left over, and I am asking if there is any good reason to do this. (or even an acceptable reason would do). My thoughts ...
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1 vote
4 answers
282 views

Positive and ground different wire thickness

Preface: I'm a beginner. Do positive and ground need the same wire thickness? Is it safe is use ground wires that are thinner than the positive? I think I understand that for a given amount of current,...
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