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Multimeters that do not appear to meet their safety specs. (updated frequently)

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I thought the safety rating of the meter and leads (600V for example) meant that the user would be safe connected to (and protected from) voltages that high, not that the meter could measure that level. That said, a 250V fuse would be appropriate if the meters range was 250V and less. The fuse is to protect the meter, safety rating or class rating is an insulation safety rating and measure of dielectric strength.

The fuse rating of 250V is a bit odd, when you find it in meters supposedly safe for measuring at higher voltages.

The fuse of course only sees a much smaller voltage, in normal conditions. However, in the event of the fuse blowing due to overcurrent, both the voltage rating and the breaking capacity come into play.
Essentially, the fuse only meets its breaking capacity if it's operating within its voltage range. Use it outside that range and you're going to get reduced protection.
In reality you're only going to see voltages larger than that if you make a mistake measuring current in a mains voltage circuit or similar.
I wouldn't trust or use a meter that has this type of fuse for this measurement.

Some videos on multimeter safety.     

Looks like he has a new video on safety. 

Funny the issue with the decimal point on the Amazon meter. I just received my Fluke 101 that is missing both resistance multiplier indicators (M and k). I am working to convince the seller this is actually a defect.


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