Questions tagged [gauge]

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How to distinguish different temperature wire insulations?

Wire insulations have different temperature ratings: 80°C 90°C 105°C 125°C 200°C These ratings can result in different current ratings for the same wire gauge. Are there ways to distinguish ...
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3 answers
85 views

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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2 votes
2 answers
74 views

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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5 votes
3 answers
1k views

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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-1 votes
1 answer
89 views

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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1 vote
3 answers
103 views

How to convert hydraulic pressure gauge into analog output?

Below is the pressure gauge of the heavy equipment. The pressure gauge needle is moved by a hydraulic pressure line. We are looking to capture the hydraulic pressure into an IoT device that takes an ...
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8 votes
1 answer
860 views

Restoring and operating a temperature gauge from the Soviet space shuttle Buran

After the Soviet Buran (БУРАН) program was suspended in the late 1980s, the Buran space shuttle was housed in a hangar at Baikonur. That hanger unfortunately collapsed due to structural failure in ...
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2 answers
55 views

Can a lower gauge jumper be connected to a high amperage circuit as long as it is going to an appropriate sized breaker?

The 14 AWG wire is connected to an appropriate sized circuit breaker to prevent that run of wire from drawing too many amps; however, my concerns would be that the 2/0 cable being in such close ...
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0 answers
70 views

What is the meaning of numbers at bottom of electrical gauges? [duplicate]

I work in a power generation plant and I noticed that all the gauges have some kind of standard description at the bottom. Some of them are easy to understand (I strongly suspect "~" means ...
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1 answer
84 views

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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0 answers
47 views

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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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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2 votes
0 answers
45 views

Wire guage to connect to chassis in van

I'm building an AC electrical system for my van conversion and I'd like to know if there's a minimum wire gauge I should use to connect my negative bus bar to my van's chassis. Specs: I'm running a ...
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2 answers
193 views

What would be suitable wiring for a 52V DC 30A 1000W e-bike?

So I bought a 12AWG RW90 wire from homedepot and I think it caused my anderson pp45 connector to blow. I'm looking at the wiring for my motor and battery, and they both look like 12 gauge wires. And I'...
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1 answer
101 views

Need tips on creating a custom usb cable

In short, I have two questions: Does shielding matter for a USB2.0 cable inside a computer? The length is about 50 cm. Is the requirement that data wires should be thicker than data ones still valid ...
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1 answer
66 views

Gauging Wire for 12V Parallel Circuit

I'm building a 12V parallel circuit to run some LEDs...I simplified it in the picture below but need some advice on wire sizing in a parallel circuit. The combined amps of the 3 lights is ~11.25amps. ...
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2 answers
161 views

Can I double 16 gauge wire? [closed]

I have seen several similar questions on the internet but I can't find a straight answer. I have a ton of used single strand 16 gauge wire that I would like to use. I know that 16 gauge wire typically ...
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0 votes
1 answer
183 views

Tachometer air core meter - how does it operate?

This is a question from a total noob, out of pure curiosity. I've been tinkering with my bike's instrument panel and took it apart - I found out that this sin-cos marking is the base of the air core ...
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1 vote
1 answer
56 views

How are analog thermocouple meters calibrated?

In most modern thermocouple measuring equipment, the input is high impedance and approximates a perfect voltmeter. This makes the thermocouple measurement easy because there is no current flowing ...
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0 votes
4 answers
176 views

Tap into 12AWG wire with 20AWG wire

I am using 3 of these Mighty Max 12V 12Ah batteries on my Razor MX650 electric bike and they are connected with 12 gauge wire. I would like to tap into the power on one of the batteries with a 20 ...
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0 answers
225 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/...
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4 votes
4 answers
2k views

How to calculate maximum input power on a speaker?

I got into this rabbit hole while trying to replace the speaker wire in my setup. I have speakers with 8 Ω of resistance (Rspeaker) and a maximum input power of 140 Watts, so I wanted wires that would ...
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1 answer
112 views

Programming stepper motors to smoothly show value that is refreshed at certain intervals

I am making analog speedo and rpm gauge for both a bike and a car using x27.168 stepper motors and AX1201728SG motor driver. I have encountered quite a problem with showing data that is not constantly ...
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1 vote
2 answers
1k views

Can I use Dupont wires for power delivery?

For a small hobby project I'm trying to control an LED strip from a phone. To prototype this, I will simply use a breadboard. I have an external 12V power supply and the strip will use at most, 1.5 ...
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0 votes
1 answer
55 views

Ceiling lamp, 14 gauge, not 18 gauge

I've Googled this very hard, and I'm not coming up with any good answers. This question seems very simple: Are there ceiling lights/lamps in the market that have a 14-gauge wire for the black/white/...
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0 votes
3 answers
996 views

Can I use 18AWG wire instead of 22AWG when doing guitar pedal modifications?

I'm planning on doing some modifications to my Dunlop GCB95 Cry Baby wah pedal. As far as I can tell, the hookup wire in the pedal is 22AWG (it's difficult to read what's printed on the side). The ...
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0 votes
2 answers
525 views

How many amps between batteries that are wired in parallel?

How many amps will flow through the cables between my batteries if I have 2 batteries wired in parallel? Let's look at a simple example: We've got 2 batteries in parallel, and one 12v lamp that ...
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2 votes
1 answer
385 views

What type of wire should i use to make a jumper on the PCB control board from my dryer? [closed]

Sorry for my ignorance on this topic. The relay (part G8P-1A4P 12VDC by Omron) on the PCB control board of my clothes dryer went bad. As a result, one of the pins and circle around the pin (sorry dont ...
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1 vote
1 answer
534 views

UPS output max cable length [closed]

I want to add 2x UPS PowerWalker VI 2200 UPS 1200W in the next room. Is it safe to add 2 Power Strip of 6M ? What Cord Gauge do I need ? UPS page https://powerwalker.com/?page=product&item=...
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0 votes
2 answers
678 views

Split output of one temperature sensor to two independent signals using an op amp buffer [duplicate]

First off I am a car guy, if I have a schematic or details I can solder what I need. I have a client that fitted a digital temperature gauge to his car, he also wants to have the gauge on the ...
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1 vote
3 answers
248 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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1 vote
1 answer
696 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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1 vote
2 answers
143 views

Is it bad practice to connect wires of vastly different gauges?

I would like to connect an Anderson plug with 25mm² cable to a 12V AGM battery so that I can easily connect and disconnect different devices which will conduct currents of varying amperage. I may ...
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0 votes
1 answer
174 views

Unstable wheatstone bridge simulator circuit - help required [closed]

simulate this circuit – Schematic created using CircuitLab I am looking to implement a wheatstone bridge circuit so I can accurately adjust the signal into a strain gauge amplifier circuit. Is ...
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0 votes
1 answer
236 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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1 vote
1 answer
129 views

DIY water tank gauge using analogue ammeter - linearity

A follow up question to my previous on building a DIY water gauge DIY water tank gauge using analogue ammeter. I have scrabbled together a "Euro type" sender (10 Ω empty - 180 Ω full) and ...
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3 votes
2 answers
157 views

DIY water tank gauge using analogue ammeter

Our (old) boat has a fresh water tank whose level was reported by a now broken gauge. For cosmetic reasons I need to replace the broken gauge with a similar form factor (I do not wish to cut the panel ...
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-1 votes
1 answer
4k views

What nichrome wire voltage/amps is required to heat 1 meter [closed]

How can I work out what voltage and amps are required to heat nichrome to: Temperature: 220 F Length: 100 cm Gauge: 20 (0.85 mm diameter, 1.62 ohms per meter) I think I need 7 volts and 3 amps. I ...
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0 votes
1 answer
222 views

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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-3 votes
2 answers
5k views

How can I calculate length of wire, given its gauge and resistance?

As the title suggests; I am trying to calculate the length of a wire given its gauge and resistance in ohms per 1000 feet. I also have the amount of voltage drop, which is 1.1 V. ...
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-2 votes
1 answer
5k views

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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2 votes
1 answer
455 views

Charger, load sharing and Fuel gauge

I'm designing a battery powered circuit where I would like to charge the battery via USB, and monitor the remaining battery capacity during operation. I'm using the following IC's: MCP73831 (charger)...
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2 votes
1 answer
664 views

What adhesive is best to glue strain gauges to metal?

I'm trying to use these strain gauges to measure bending of a metallic cantilever (metal TBD). Does anyone know what adhesive I can use to glue the strain gauges? I'd rather not have to use an oven ...
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0 votes
1 answer
104 views

Simulate Automotive Speedometer Sender

I am working on a project and I have run into a little bit of a problem. I have a speedometer gauge that I am trying to send a signal to on a bench (out of car). The way in wich the it works is ...
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0 votes
1 answer
415 views

NiMH Batteries and Fuel Gauge

I'm currently trying to figure out the best way to make use of my gas gauge LTC2943-1 in conjunction with my pack of NiMH batteries. I am aware that voltage alone is not a sufficient measure of the ...
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1 vote
2 answers
886 views

A 5V @ 1A wifi surveillance camera placed 50ft away (indoor)

I need to place a Wifi surveillance camera near the entrance of my house where no power outlet is in that area. I pulled a wire wrapping wire (awg 30) to the target location without thinking about ...
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0 votes
1 answer
42 views

Wire Length Restrictions on Simple Battery Powered Circuit

Right now I am setting up a simple circuit with a switch at one end and a LED on the other. Basically it is going to be used for someone on one end to get the attention of the person on the other. The ...
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2 votes
1 answer
2k views

How to determine number of allowable wires in a crimp wire connector?

I bought a pack of single-ended crimp-style connectors at a standard hardware store. The data sheet specifies allowable wire configurations, but I am having trouble reading it. The linked data sheet ...
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0 votes
4 answers
11k views

Can small wire gauge restrict current? powering a brushless motor

The question is related to quadcopters and else. So my quadcopter (brushless dc motors and electronic speed controllers powere by 3cell lithium battery 2700mah 25C) has thin wires on the main power ...
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1 vote
3 answers
2k views

How to measure 6S LIPO battery juice in percentage from Raspberry Pi?

I've got a Raspberry Pi and I want to use it to measure the percentage of charge which a 6S LIPO battery pack has left which I then send to a server over the internet. I assumed there would be easy ...
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