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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

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Old 4th May 2021, 3:42 pm   #1
saddlestone-man
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Default NCV Live Test

Hello All

I was scanning some DMMs for sale on eBay and some have a NCV live position on the range switch.

What is this test?

Best rgds. Stef.
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Old 4th May 2021, 4:11 pm   #2
peter_scott
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Default Re: NCV Live Test

https://youtu.be/koVPjSOZzUs
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Old 4th May 2021, 4:12 pm   #3
dglcomp
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Default Re: NCV Live Test

Its for Non-Contact voltage sensing, there will be a sensor (usually on the top of the multimeter) that allows it to sense voltage (usually mains potential) and will sound/flash a warning if voltage is detected.
Generally used by electricians so they can check if a wire/cable is live before working on it without needing to access the conductors.
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Old 4th May 2021, 5:04 pm   #4
merlinmaxwell
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Default Re: NCV Live Test

And rather handy to find where cables are in walls, saves that "drill, oops, bang" moment. Another use is locating a failed bub in a series Christmas (sorry, Saturnalia) light string.
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Old 4th May 2021, 5:06 pm   #5
saddlestone-man
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Default Re: NCV Live Test

Ah yes a cable tracer/finder. Useful to have it built into your DMM.
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