Re: WTF
Also if a fuse blows inside the oxygen tank after launch, all you have to do is pull over to the side of space and take the tank apart to replace it.
Interesting story:
One of the power supplies for the original European camera on Hubble had a front panel fuse.
Why everybody asked? - Who is going to replace the fuse ? (this was before resetting polyfuses)
Because the PSU is being built by a small european country and required approval by their aviation agency who said that a flight PSU must have a fuse !
It was subsequently replaced by a PSU built by a competent larger European company.
The fused unit probably sits on a shelf in a clean room to this day