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-   -   NCV Live Test (https://www.vintage-radio.net/forum/showthread.php?t=179720)

saddlestone-man 4th May 2021 3:42 pm

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.

peter_scott 4th May 2021 4:11 pm

Re: NCV Live Test
 
https://youtu.be/koVPjSOZzUs

dglcomp 4th May 2021 4:12 pm

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.

merlinmaxwell 4th May 2021 5:04 pm

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.

saddlestone-man 4th May 2021 5:06 pm

Re: NCV Live Test
 
Ah yes a cable tracer/finder. Useful to have it built into your DMM.


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