From: NONONOmisc07@fmguy.com
In sci.electronics.repair, on 21 Feb 2026 16:14:52 +0000 (GMT), Theo
wrote:
>micky wrote:
>> I have an Agilent U1241A VOM that I bought at a hamfest for only $20,
>> new, but the previous model and it seems to be missing its tilt stand.
>> It is so fancy I don't even understand all the ratings:
>>
>> The amperage measurement is: 11A/1000 V 30 kA/fast-acting fuse
>>
>> The milli and micro amp measurement is similar.
>>
>> What does 30 kA mean? 30,000 amps? I dont' think so. ;-)
>
>It does mean that. It's a "30 kA fast-acting fuse".
>
>In other words, if you apply more than 11A (or whatever the fuse rating is)
>but less than 30,000 amps the fuse promises to become open circuit. If you
>apply more than 30kA then there is a risk the fuse blows closed-circuit.
>Due to the destructive power of putting so many kW into a small space, you
>could have problems like vapourising metal parts in such a way that it fails
>'closed', or creates a sustained arc that means current flows even though
>the fuse has supposedly 'blown'.
>
>TL;DR: if you are measuring something that might allow more than 30kA to
>flow if you accidentally shorted it, don't use this meter to measure it.
>However you would probably know if you were in such a situation.
>
>Theo
I'm glad I asked and I'm glad you explained this to me. I have the
bodies of a young fawn and a wolf, both of whom died accidentally. I
sewed the head of the wolf onto the body of the deer and I was waiting
for the next lightning storm to revive the wolf-deer. Now I realize I
don't have the right equipment. But lighting will persist through April
I think and that is time to buy the proper fuses. I'll let you know how
it turns out.
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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