LOL. I wasn't living here when it broke; I don't know what they did to it.
By the same token, I'm leaving and I wanted to either put in the right fuse or leave a note inside the case for the new owner (my roommate already bought a replacement and they plan to put this one in the lobby for someone to take.)
The second store I called had it, even 12 amps, not just 10, but as I expected, only fast-blow. The original was ceramic.
I thought all ceramic fuses were slo-blo, but this one is embossed F12H250 and some webpages say that F means fast-blow???? "The types of fuses include long-time-lag or super-time-lag (TT), fast-acting fuses (FF), quick-blow fuses (F) and slow-blow or time-lag fuses (T)"
Nothing I read decribes why a microwave should need ceramic or slow-blo (in the power part, not the high voltage part).
One page says " Glass has a low rupturing point, such as 15 amperes."
That's fine since it's a 12 amp fuse, and the normal usage is about 7 amps.
" If a high voltage comes down the electrical line, the fuse element will melt.
Are there really surges that come down the line that increase the amperage for normally 7 to over 12?
"The tiny glass fuses are great for small items that don't draw a heavy amount of current and blow on a regular basis. They don't perform well outdoors and can shatter when placed in high temperatures due to its low thermal stability."
Microwave is not used outdoors or at high temperatures.
From before According to the label on the back "The input is 1400 watts, but it's a220 volt device, so that's less than 7amps normally. So, 10, right? Unless F12 in F12H250 at the top means 12 amps? " And the home.repair people told me it did, but the web says F means fast-blow.
It's a Crystal, model wp900AP23, but no schematic could I find on the web and the one taped inside just shows fuse, no details.