Products > Test Equipment
Did i destroyed my Fluke 179 by measuring resistance on 220V live wire
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slavoy:

--- Quote from: coromonadalix on August 11, 2023, 05:46:25 pm ---@slavoy

i would not say that,  if the design is not well done

auto-range as nothing to do with that,  many parts could blow before the auto-range kicks in ...

pls  name your modern chineese stuff  loll

--- End quote ---
Auto-range is on the low side, 1000V protection is very common in many cheap multimeters like UNI-T, Habotest etc. for every input. I've checked a few myself.
Gyro:

--- Quote from: slavoy on August 13, 2023, 08:21:27 am ---Auto-range is on the low side, 1000V protection is very common in many cheap multimeters like UNI-T, Habotest etc. for every input. I've checked a few myself.

--- End quote ---

I'm not sure whether you are being serious or naive. I suggest you read...  https://www.eevblog.com/forum/testgear/a-list-of-multimeters-that-do-not-appear-to-meet-their-claimed-safety-specs/
BeBuLamar:

--- Quote from: Fungus on August 13, 2023, 05:47:30 am ---
--- Quote from: BeBuLamar on August 12, 2023, 11:06:05 am ---I have done it enough time with the Fluke when I was in a hurry tried to measure voltage (120V to 480V) with the test leads plug into the current measurement jack. It blewd the fuse but I am glad that it blew the expensive fuse because the cheap fuse may explode.

--- End quote ---

a) Always put the leads back to the voltage socket after measuring current. NEVER store it with the leads in the current jack, it's guaranteed way to blow a fuse.
b) Get a meter with beep-alert on the current jacks. I personally wouldn't buy an expensive meter without that feature, but many Flukes don't have it.

PS: I've deliberately plugged $13 meters into the mains on resistance mode and they survived.

--- End quote ---

Well I always did that with a Fluke 87v which does have the beep alert. I put it on current measurement mode to use as a jumper, put the meter down. Then in a hurry I pick it up trying ot measure the voltage. Sometimes it's just 24VDC but at times it's 120VAC, 240VAC or even 480VAC.  It's because I work in a hectic environment. Never did that with any other meters I have.
slavoy:

--- Quote from: Gyro on August 13, 2023, 09:29:19 am ---I'm not sure whether you are being serious or naive. I suggest you read...  https://www.eevblog.com/forum/testgear/a-list-of-multimeters-that-do-not-appear-to-meet-their-claimed-safety-specs/

--- End quote ---
I'm not quite sure what this has to do with the topic.

--- Quote from: coromonadalix on August 11, 2023, 05:46:25 pm ---pls  name your modern chineese stuff  loll

--- End quote ---
Here are some. I can turn the knob all day and nothing will happen.
Gyro:

--- Quote from: slavoy on August 13, 2023, 03:59:36 pm ---I'm not quite sure what this has to do with the topic.

--- End quote ---

The OP was using the meter on mains, safety is relevant.


--- Quote ---Here are some. I can turn the knob all day and nothing will happen.

--- End quote ---

You should never turn the function dial on a meter while high voltage is applied. You specifically referenced autoranging, so there wouldn't be any reason to even be changing voltage range.
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