Quote:
Originally Posted by plumbweiss
If you're after a very small radio fuse, you may find it difficult to get a 20mm or Belling-Lee midget fast HRC ceramic / sand filled fuse below about 2A,
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Could I be cheeky and point out that I stock them?
http://hometown.aol.co.uk/oldradioparts/oddsnsods.htm
I used to do industrial electronics, and much of that involved troubleshooting big DC drives up to 900kW. It's a frightening experience having your test gear wired up to power semiconductors connected to a 1.5MVA distribution transformer via a set of 800A fuses! Most of the work is done live, one slip........!
While the shock risk is no greater than working on the domestic mains as phase to ground is still only 230v, the main danger from high-energy 415v circuits is explosion. Most casualties resulting from accidents in sub-1kV installations seem to be the result of blast injuries.
So it's best never to treat the mains supply with anything other than the greatest respect. Enormous fault currents CAN flow before safety devices (fuses, circuit breakers etc.) actually operate.