# Questions tagged [awg]

American Wire Gauge (AWG), a standardized wire gauge system of wire gauges. A lower wire gauge denotes a higher wire diameter. Wire gauge determines properties of the wire such as its resistance per unit length and the amount of current it can carry.

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### 500 A DC from shunt to battery bus bar, how do you carry the power? [closed]

System is nominally 12 V DC but it is connected to LiFePO4 batteries so the charging voltage is 14.4 V DC. There is currently 900 AH of battery capacity, soon to be 1200 AH. Load side is 2 inverters ...
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### WS2812 LED Pixel Ring 26 AWG JST

I am building a small kitchen for my child. For the hot plate I bought eight ws2812 led pixel rings: four with 8 leds and four with 16 leds. I soldered each two rings together so I have four double ...
1 vote
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### What is the equivalent AWG of 1/4 inch soft copper tubing?

Out of curiosity, what is the equivalent AWG of 1/4 inch copper tubing? The tubing would be mostly hollow; how much current would it be rated for?
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### Can I charge laptop with wire 20awg

My laptop has a maximum power is 170W, 20V, and I often use it with max power. My adapter has a broken power jack and I must change the wire that supplies power for the charge. I use wire 20awg, the ...
21 views

### What is the right resistance for an esc with a specific gauge rating in bldc motors

I'm trying to build a motor from scratch. A table says 38 AWG (~0.1 mm diameter) is what I assume to be safe operating lower than 22.8 mA "continuously" Commercial hobby motors on the other ...
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### What would be the AWG (American Wire Gauge) standard for my wire 1 x 0.75 rm?

I have been trying to figure out my wire gauge standard in AWG format. I bought a coil (100 meters) of wire and the info written on the package is: 1 x 0.75 rm. I understand the 1 in here represents ...
512 views

### Confusion regarding safe current limit for AWG #18

When I look into AMAZON for buying wires, the description claim that the AWG #18 150 strands wire can bear 7.5A current. https://www.amazon.com/dp/B0746HRVZP/ref=twister_B0746HR9HZ?_encoding=UTF8&...
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### Need suggestion on wire size (AWG) for running brushed DC motors

I am a beginner and working on building a 4-wheel unmanned ground vehicle. I bought four brushed DC motors from Pololu. According to the datasheet, the stall current is 4.9A. But the wires that come ...
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340 views

### Cooling a wire to increase its current rating and lifespan

Say I have an 18 AWG wire that can stand 2.7 A. I need to use it for a much higher current than its rating, about 80 A (pulsed current for a few milliseconds). The wire will get hot more and more with ...
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1 vote
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### DC Motor Design Question - Bypassing Back-EMF

I'm not gonna lie - I don't have enough knowledge about EMF and Back EMF so I need you guys. My friend will soon build a DC motor for me but I currently have no idea what design will produce high ...
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### How to connect 16 gauge wire to DRV8825?

I need to connect 16 gauge wire to one of the pins of my DRV8825 motor driver. I know DuPont cables are not going to work because they typically max out at 5 amps. What else can I use? Also, is it ...
10k views

### Why does the current carrying capability of a cable increase with temperature

I'm specifying cable for a VFD application and came across this table regarding NEC ampacities and corresponding cable size. What I found interesting is that the ampacity increased with temperature ...
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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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### 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 ...
2k views

### Why does same size AWG solid and stranded copper wire have such different resistance?

When I measure a stranded copper wire or see a resistance spec from mfg it is about 25% higher than what is listed in the tables I see online for solid copper wire. About 1 AWG difference. ex: 10 ...
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### Wire sizes, difference between "-" vs "/"

Is there a difference between 10/2 AWG and 10-2 in wire sizes? Why is there sometimes used a slash and other times used a dash? Googled this but didn't find anything.
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### Minimum wire AWG for 4 ohm speakers

I am planning on building a Bluetooth speaker using two of these speakers: They will be hooked up to a Bluetooth CSR8645 board. The length of the cables is smaller than 10cm. I have wired them up ...
1 vote
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### Use of a DC power supply and an arbitrary wave generator in digital circuits

I am a communications and electronics engineering student from home because of obvious reasons, i´ve mannaged to acquire a regulated DC power supply an arbitrary wave generator and a mini oscilloscope ...
575 views

### Will I run into a problem if I use an 18AWG extension cable for 240V device?

I currently have a length of SOOW 18AWG with ground connected to my breaker box. One lead is connected to phase 1 on a 15A breaker. One lead is connected to phase 2 on a 15A breaker. ...3 is ground/...
1 vote
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### Why are AWG charts rated in amperes and not in watts? [duplicate]

American wire gauge chart is rated in Ampacity. Isn't it wise to be rated in watts? Let say a wire is rated to conduct a certain amount of current what's going to happen when the voltage goes higher ...
188 views

### wire gauge for prototyping board

I am learning to do electronics making a things like a 3d scanner and a CNC. I want to make my own board to control the steppers and I have got the stepper drives, prefboard, arduino, etc. The only ...
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### How to calculate wire gauge when connecting battery cells in series?

How does one determine what wire gauge to use when building a battery by connecting lower voltage cells in series? e.g. Let's say one is building a couple of 12V batteries that are expected to supply ...
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1 vote
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### Can 300 ADC damage a battery wire (4AWG) rated for 60VDC, 150ADC if 300ADC @5VDC is passed for 2 seconds?

I would like to know if there is a risk of damaging a 4AWG Battery wire (worst case fire hazard) which is rated for 60V, 150ADC if 300Amps @5VDC is passed for only 2 seconds? I am working on a test ...
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1 vote
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### Wiring ampmeter with reduced wire size

I have a solar system on a boat. 12v 8amp max The wiring is 12 ga The digital amp gauge I have has 20ga wire 2”long ea total is 4” This wire seems to small. Should I shorten the gauge wires ?? Is ...
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14k views

### Does the voltage affect the AWG wire size choice?

I read a lot of website and articles about how to choose the right wire size, this one for example, and all of them have a table with AWG size and a corresponding maximum amperage. However, they never ...
1 vote
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### Same awg wire but larger diameter on one?

I bought 22 awg wire from the same seller twice at different times. When I bought it the second time, I noticed that one of the wire including the insulation is noticeably larger. Does this 100% mean ...
48 views

### AWGs for the following LED setup

I'm ass deep in my next project.....4 LED cubes(small lanterns) on the ceiling... The strip is: Power: 0.1-0.4W/LED 6W-24W/m Total: 30W-120W This is a variable value Have a 12V power with enough AMPS.....
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### Convention for describing larger or smaller wire awg

With wire awg, a larger number means a smaller wire. What is the proper convention for making comparisons between wire awg? For example if you you say it a wire needs to be larger than 12awg, is ...
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### Wiring WS2812b to power supply

I currently have am trying to power a 300M 5V WS2812b from only one end from a 5v 20A power switching supply that I got off ebay. There is about 8-10 feet of distance between the two, and I was ...
226 views

### Carry 2A over AWG28

I'm looking at a (relatively popular) slip ring which uses AWG28 wires and has a rated current of 2A/channel. However, this chart suggests that AWG28 is only capable of carrying 0.226A for power ...
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### Can wire gauge be increased gradually over the length to compensate for voltage drop?

Assume DC. For a given amperage and distance, does the wire gauge need to be constant over the length of the cable? For example, assume 3% acceptable voltage loss, 24Vdc, 10 meter, 50 amp. A cable ...
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### Is 26 AWG good enough for a ~1.5 amps current at 5V?

I have recently started to learn about electronics and as my first project, I'm trying to make a wifi-enabled LED strip. I have read a lot about all the theory, followed tutorials, and try to be ...
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1 vote
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### IR drop in wires

I have 2 wires (18AWG & 28AWG) of the same length which I connect to a power supply to deliver power to my board. My board will consume around 400mA maximum. Which wire will have more IR drop ...
3k views

### Maximum current on 6 AWG wire

So there are two types of 6 AWG cables: PVC insulated cable with tiny copper strands inside. Official specs: 135A @ 100% max current, resistance 1.21 ohm, temperature from -40 to 85 degrees C. ...
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### How can 22 awg cable over 100cm deliver 3A

I wonder how 22 AWG cable e.g. USB-A to DC power jack with 100 cm length can deliver 3A. Why am I asking -> Using this calculator (I hope its correct) by entering values 2% drop, 1 meter, 5V, 3A ...
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### What effect does having 'measured' as a parameter in additive white gaussian noise?

I'm comparing the bit error rate of various modulation schemes with additive white gaussian noise in MATLAB. There's the option to have this noise using 'measured' which measures the power of a ...
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### How to extend router wire?

I have a router with 2m wire, and it would be really useful to extending it a little. I was thinking about cut in somewhere and add 2 'nipple' (not sure if proper word) to connect them with new 3m ...
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1 vote
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### Calculating electromagnet – magnetism vs heat

Im making an electromagnet that will be more or less permanently turned on so I need to avoid heating problems. I have studied this a bit and came to the conclusion that: the lower the gauge (AWG) (...
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### Why does the max current capacity decrease with the number of cores for the same AWG?

I couldn’t find a similar or duplicate question yet but regarding this table for instance a 24 AWG wire can carry max 3.5A current if it is single core. But if it is seven core it can only carry max 1....
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1 vote
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### 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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### 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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### 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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### Is this cheap extension cord safely rated for 1625W?

Comparing two cables that I have, a cheap extension cord and an expensive "heavy duty" extension cord, both are rated for the same load. Is this an inflated rating or is it accurate for the white ...
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### Reducing voltage for increased current through wire

I am wondering, if I reduce the voltage going through a specific sized wire, can I therefore increase the current? I am creating a series-parallel battery bank and it will output 7.4 volts at 75 amp ...
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### What wire gauge for use for JST-XH connectors with and without insulation?

I bought a variety kit of JST-XH connectors on ebay: The auction says: Wire Range: AWG 32-24 Insulation O.D.: 1.00mm (Max) But Wikipedia says that this connector supports AWG 30-22 and does ...
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### In a 240 V "2-phase" wiring, how does current/amps get distributed?

It is my understanding that if I need to draw, for instance, 30 Amps from a 240 V circuit (Live-Live) then there will be 30 Amps running from both wires, not half and half. So, the AWG sizes for the ...
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### Is 22AWG wire appropriate for 144-LED WS2812B strips?

There is a question on a 1m set of WS2812B LEDs at 144 LEDs/meter (60mA/LED at peak brightness) about what gauge wire is used. The seller replies that the wire is 22 AWG (linked above). 144 * 60mA = ...
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