Electronics > Beginners

Brymen BM235 10A fuse silently destroyed by a switched off UPS leakage current..

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rsjsouza:

--- Quote from: hgg on March 11, 2019, 04:54:33 am ----  "Regarding arc flash on regular outlets, I have had my share of very impressive events on both the typical 15A circuit and some higher ones (40, 80A)."

Do you mind sharing the details?   :)

--- End quote ---
I have shared it in one or two threads around here, but the short version is that, in at least two occasions, if I weren't using glasses I would have vapourized electrolyte and a blend of silicon/epoxy etched to the bottom of my eyes.

hgg:
johnkenyon   Thank you for the idea.   :-+

The UPS already had a covered hole with the exact diameter of a mains neon indicator...  :)
This is how it was meant to be made...



malagas_on_fire:
Nice, and the meter? Get a decent fuse  10x38mm 11A fuse ( Siba, Bussman) for the meter and consider next time using an small  extension cord with splitted cables ( earth, neutral and live) to connect a small load ( a 5V usb power cord)  and only connect in series the matched color / type r of cable when using current, also consider using a clamp / current AC transducer eg:


https://ebay.us/zEtvaF

or even a clamp meter such the uni-t 210E.

hgg:
The meter is waiting for the new fuse.
I already have both the UT210E and a splitted earth extension cord...

malagas_on_fire:
Good another thing to explore with the extension cable is leaks between earth-neutral or earth-live, putting these pairs in the clamps, without any load attached.

i follow previous post a recomendation for fuses, based on the  jpscalibrationservices  seller .

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