Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [gauge]

105 questions
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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 hours between runs. Since currents of interest…
Stephen Collings
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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 2002, destroying the spacecraft. A clear-out of the…
Polynomial
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Analog Gauge provider

I'm designing an altimeter based on a pic microcontroller and a freescale pressure sensor. I'd like to output the altitude from the pic using an analog gauge. I found some useful information here. What I want to know is where to buy analog gauges…
Padu Merloti
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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 to online is tables that you can look up the…
Anonymous Penguin
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Measuring the charge of a battery while charging

Determining whether a 12V car battery needs charge is as easy as touching its leads to those of a multimeter. While charging from a vehicle's alternator, the multimeter method fails to determine the battery's state of charge and instead reports the…
ProductionValues
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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 install thicker negative wires, or if I can simply…
questiondude
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Analogue Gauge with Arduino

How do you make / connect an Analogue gauge with Arduino?
littlebirdceo
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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 not exceed 140W when considering their gauge and…
lief
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Formula to find out the resistance per meter of a specific gauge of wire if I already know the resistance of a different gauge of wire per meter?

So if I know a 30 gauge wire's resistance at 1 meter, how can I figure out the resistance of a 29 gauge wire at 1 meter long of the same material? Or 5 gauge, or any other gauge? I need a formula, not a chart. Working with multiple materials, and I…
Vaporcloud
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Why is it called a gas gauge?

Why are battery monitor ICs such as STC3115 (datasheet) called a gas gauge? This name seems pretty illogical and I was wondering the reasoning/story behind it.
EasyOhm
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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 about). So I cannot just buy any new tank…
Lance Kneeshaw
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Bonding strain gauges to ABS

As the question says, I've been looking for the best way to bond strain gauges to Acrylonitrile butadiene styrene (ABS). It will be a circular cross section ABS piece. I'm not sure if this is an electronics question per se, but the application is in…
Adam
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Is there a way to calculate the proper wire gauge?

I'm looking for the right copper wire gauge for my project. I've found several charts listing the maximum current that various gauges, solid and stranded, can transmit. The charts often disagree. One says an 8 gauge wire with a stranding of "7"…
aswine
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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 length = 2x resistance. So your wire resistance…
user1783172
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Super tweeter: voice coil wire gauge x power rating apparent inconsistency?

I'm an amateur electronics experimenter/enthusiast. I have an 8-ohm super tweeter from JBL (sold in Brazil as model ST200) whose RMS power with passive crossover is 100W @ 8kHz. It's quite a large tweeter the size of a low-power woofer. So,…
Paulo Carvalho
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